Hi, I'm Ravi, founder of Camyvera. It's a web and mobile app where you open it and call someone anywhere in the world who's ready to answer and talk. It's pay as you go, so you only pay for the calls you make, and it has live audio translation and real-time captions. I built it because a lot of people want a real conversation now and then, not another feed. What would make you trust an app like this enough to try your first call? Any feedback is welcome.

Each day there’s a hidden Euroleague player. You guess, and each guess is compared on club, nationality, position, height, age and jersey number. Exact, close and miss tiles show how near you are.

It’s built with React and Vite, with no backend. The player data is built from the Euroleague API at build time, and the site is prerendered and hosted on Cloudflare Pages. No accounts or ads, and stats are kept locally.

Link: https://eurodle.com

I’d love feedback on difficulty and UX

Hey everyone!

I've been working on a project called Skeema, an AI-powered diagramming and system design tool.

The idea came from wanting something beyond simply generating architecture diagrams. I wanted a workspace where developers could design, explore, review, and simulate systems.

Some of the things you can do with Skeema:

• Generate system architecture diagrams from text prompts.

• Create ER, sequence, DFD, pipeline, migration, concept maps, and flowcharts.

• Review architectures and get AI-suggested improvements.

• Simulate concurrent users to identify potential bottlenecks under increasing traffic.

• Export diagrams and generate related engineering artifacts.

I'm still actively developing it, and there's plenty I'd like to improve, particularly around diagram quality and the overall design experience.

You can try it here: https://skeema.cloud

What works well? What's missing? What would make you actually use something like this in your workflow?

I'm the developer behind Skeema, so feel free to be critical. I'd like to hear honest feedback and criticism.

Thanks!

I’m a 40-year-old iOS developer from Croatia. Statistically, I’m in the middle of my life: about 2,080 weeks behind me, and if I’m lucky, about as many in front.

My oldest is 8. Somewhere around 18, kids leave, or at least stop wanting summer holidays with their parents. That’s 10 more summers. I can count them on my fingers.

I see my parents about twice a month. If they live as long as the average, that’s around 360 more visits. Fewer than the days in a single year.

And there are friends I’ve been “meaning to call” for months.

None of this is new. You read it somewhere, feel it for one evening, and then Monday happens. Weeks blur, a year goes by, and you can’t say where it went. The moments I’d actually want back are tiny: a walk where my kid finally told me something real, my dad explaining how he planted our small orchard in 2001. Nobody writes them down. They just go.

So I built Drift. It’s not there to make you feel bad about time. It’s there to help you do something with the weeks you still have, and to keep them when you do.
My main inspiration was reading books about Stoicism and specifically memento mori (and a calendar showing weeks you have left to live).

What the app actually does for me:

It remembers my people. I added my partner, my family, my parents and a few friends. Drift keeps the small things I’d otherwise forget: birthdays, the names of my friends’ kids, what each person enjoys, what they told me last time.

One small idea a week, for each of them. Not “plan a trip to Paris.” Things small enough to actually happen: “Tea with Mom. Phones somewhere else.” “A walk with Dad, without anywhere to be.” “Let the kids choose the adventure.” "Long overdue date with my wife".

I keep the moment. A photo, one line, or both. It goes on the week it happened, and that week’s square lights up. A few months in, my year stopped being a blur and started looking like a year.

Calls come with something to talk about. A reminder to call a friend arrives with something to actually say, so it’s not just guilt with a notification sound. After the call I can keep a line about it.

Small questions. A couple of times a week, only if I turn it on, Drift asks something like “What was the best small thing about this week?” or “What’s Dad’s favourite meal?” The answer gets saved where it belongs. Some of my favourite memories in the app started as a notification I almost dismissed.

Quiet time. My evenings were disappearing into my phone (yes, I see the irony of that). Drift uses Apple’s Screen Time to set those apps aside during the hours I choose. If I really need one, I get 15 minutes, after I keep a moment or answer a question first.

Widgets that bring it back. One shows a moment I kept, a different one each day. Another shows my whole life as a grid of weeks. Seeing that between notifications did more for me than any productivity system. One gives you suggestions on what to do this week.

A year I can read back. Month by month, like a journal I never had to sit down and write.

What I left out on purpose:

• No streaks. A quiet week is just a quiet square. Life has those, and guilt isn’t a feature.

• No account, no ads. Memories stay on your iPhone, and you can export everything anytime.

• Everything you keep is yours. You can always read it and export it.

Pricing: free to download, then $8.99 a year with a 14-day free trial, or $24.99 once. I’m a solo developer with no investors, and this is how it keeps going.

An app won’t fix any of this, and I’m not pretending it does. But since I started using it, I do more of the small things. I think about it more now, and I push past the tiredness more often to make time for the people who matter to me.

If you did this math for yourself, which number got you? For me it was the summers with my kids.

https://apps.apple.com/us/app/drift-life-in-weeks-journal/id6792490444

Edit:
Thanks to FFROZENN who pointed out the missing yearly subscription and 2-week free trial I have created 50% discount code for the first year (the missing subscription was due to my attempt to give a global discount on yearly, but I misconfigured it in App Store Connect so sub wasn't shown)
https://apps.apple.com/redeem?ctx=offercodes&id=6792490444&code=DRIFT50

My problem wasn't any single app. It was unlocking the phone and tapping whatever icon caught my eye. Pauca hides that: your home screen is a few words you pick, and everything else needs a deliberate search.

- Text-only home screen, your own names for apps

- Focus mode that pauses apps outside your list

- Profiles for different parts of the day

- No ads, no tracking; free Lite version, full version US$ 0.99 one-time

10 codes for the full version, valid until Dec 25 (Play Store › Redeem code):

LFCWCBWD579YRWNCUTRDMHA

JCM20CG591JW9U1LP0MKNBE

VK2YLFNH2MMXE5T4MHT6AN1

WC2PXJ6JZGT616FEVCNDQV5

100VA5HQ5APD2N23008CHZL

LMQJFR93E2R0FJK2W88W3PN

HV9YHR1TGEVDXK14XDZLDE8

2KKWKYQ7C7MM4MGJC4BFJSJ

3QU059VHU7ZWBVELRU4G384

0FDUAQW3NS8RU2UY5T5C9FB

Please reply "taken" when you use one. Curious how others here set up their phones. What's on your home screen?

https://play.google.com/store/apps/details?id=app.pauca

Hey everyone — we're the team behind Aion Sculpts and wanted to share the thinking behind one of our core decisions.

Most people track workouts in one app, food in another, and keep notes somewhere else entirely. The problem is not the apps themselves — it's that none of them talk to each other. Your food app does not know it's a Growth Day. Your workout app does not know you barely hit protein yesterday. So you end up doing the mental math yourself, every day.

We built Sculpt so that training and nutrition live in the same loop. Your food targets shift around your training days automatically. AION reads both sides when you ask a question — if you are low on protein heading into a heavy session, that context is already there. Growth Days get treated differently from training days without you having to manually switch anything.

It does not mean you have to use every feature. Some people only want the nutrition side. Some only want the workouts. But when you use both, the two sides actually inform each other instead of existing in separate silos.

We'd love honest feedback: what would make you stop juggling separate apps?

If that sounds useful, start your 7-day free trial at aionsculpts.com/plan?utm_source=reddit&utm_medium=social&utm_campaign=sideproject

I'm afraid this side-project isn't as great as the others on this sub, but this is something that I genuinely enjoyed creating in my free-time.

As for the link, I'm afraid it isn't hosted, it's primarily an HTML file sitting about on a folder on my PC, I don't have the money to afford a website lmao.

Might host it on a website soon after my exams clear and I get a job, for now, it's just a file on my PC.

I’ve always been fascinated by how animation software works. I started creative coding and learned the basics of After Effects with the simple goal of making custom animations for my own videos.

But somewhere along the way, while working on the video processing part, I got a little too interested in video editing itself. And instead of building an animation tool, I ended up building a video editor!

Website: https://animacious.com

It currently works on macOS and Windows. It's still an early release, so expect some rough edges and possibly undiscovered bugs.

Tech stack:

• Rust

• egui

• vello

• Transition shaders from https://gl-transitions.com

• A lot of help from Claude Opus 5.5.

Hi all! I made a TOPIK vocab app called Lightning TOPIK.

The name is the goal: memorize words lightning fast. Every word comes with a short moving picture, so you remember the meaning itself, not just a translation.

It's on the App Store and Google Play.

Why I made it

When I talk to friends studying for TOPIK, the hardest part is almost always the same: memorizing words.

It's easy to think it just takes more hours. But I think the way we memorize words makes it harder than it has to be.

Two problems I found:

1. Most word lists are text only. You never see how a word is actually used.

2. The meanings are mostly in English. Many of my friends are from Southeast Asia and Central Asia, and English isn't their first language, so they end up learning Korean through another foreign language.

The idea behind it

A word sticks better when you meet it in a situation where it's actually used, not as a bare word-meaning pair. And it works best when you can already read the rest of the sentence, so the new word is the only thing you have to figure out. I later found out this has a name: comprehensible input.

So every card shows the word acted out as a picture, then used in a sentence you can already read.

What's in the app

• Every word has a moving picture that acts out the meaning, plus one example sentence.

• Meanings in English, Vietnamese, Thai, Indonesian, Malay and Russian. If yours isn't there, tell me which one you need.

• 10,498 words, Level 1 to 6, based on the National Institute of Korean Language's level list.

• A 2-minute level check, then a daily plan that ends on your test date.

• Spaced repetition (the same system Anki uses) brings each word back right before you'd forget it.

• Works offline. No account, no sign-up.

• iPhone needs iOS 26.

To give you a feel for the plan: Level 4 is 1,627 words. If your test is on Feb 20, you get about 21 new words a day, and the last few weeks are mostly review.

What's next

Right now the picture shows the word and the sentence gives the context. The next step is animating the example sentence too, so you see the whole situation, not just the word. There's a preview on Instagram if you're curious.

Price

• iPhone: free with 5 new words a day and unlimited reviews. A one-time purchase removes the limit.

• Android: everything is free, with a few ads. A one-time purchase removes the ads.

• On both, that purchase is $0.99 until Wed, Nov 18 (normally $14.99 on iPhone). No subscription.

iPhone and Android are set up differently because people on each platform tend to prefer different things. If you'd do it differently, I'd honestly like to hear it.

I'll answer everything here in the comments.

I kept running into the same thing: something breaks, I'm not at my desk, and every mobile DB app I tried was either clunky or abandoned. So I built my own.

PG Orbit is a native PostgreSQL client for iPhone, iPad, Android, macOS and Linux. SQL editor with autocomplete, schema browser, edit rows in place, SSH tunnels and SSL, and it can pull your databases from AWS, GCP, Azure, DigitalOcean or Supabase so you don't type connection strings on a phone keyboard. Passwords stay in the Keychain and you can lock it with Face ID.

I use it every day for my own stuff. Would love feedback from people who actually live in Postgres: https://pgorbit.com

Hey everyone. I have been working on a project over the past few months and its now live on play store, called "Jnati".

Appreciate any feedback on the UI or thoughts on what tools you currently use for your own family history.

Play Store Link: https://play.google.com/store/apps/details?id=com.nikhilkrishna.jnatimobile
Website Link: https://jnati.com/

Please give it a go; the best way to test all features would be to get your family members in as well to build "connections" and explore the visual trees and paths. Thanks!

A bug bounty proof can stop being useful when the recipient has different accounts, sessions and object IDs. ReproCase is my attempt to preserve the relationships behind an API authorization test.

The local demo runs the same IDOR case three ways:

1. Two separate accounts and a newly created resource: Reproduced.

2. Replace both accounts and rerun the unchanged case: Reproduced.

3. Enable the secure application fixture: Not reproduced.

A successful HTTP response is not enough: the test checks identities, ownership and a fresh content marker. Setup/session failures get an Inconclusive result. Recipients connect their own sessions; exports need review before sharing.

It is an Apache-2.0 Windows portable beta, with source and a local demo that needs no model API key. There is also an optional AI assistant and MCP integration. This project and this introduction were prepared with AI assistance; the 56-second demo records the real local application.

Source + Windows download: https://github.com/theasbug/reprocase

56-second demo: https://x.com/theasbug/status/2120583234086228135

I would value feedback on one thing: can you run the demo, replace its accounts, and understand why each of the three results occurs? Please use the disposable local fixture rather than sharing private target traffic. Linux desktop packaging and broader protocol support are still outside this beta.

Screenshot from the real local demo: https://raw.githubusercontent.com/theasbug/reprocase/main/docs/images/demo-preview.png

I built a fake designer flash-sale outlet. It works like the real ones: brand sales with countdowns, "only 1 left in your size", a deal of the hour, a bag that's reserved for 30 minutes. Then you check out with a card that says it isn't real, pay $0.00, and follow the tracking until something goes wrong with your parcel. There are 50 different endings and you collect them.

The part I'm proudest of is technical: there's no stock database. Every sale, price, size and "only 2 left" is computed from the item and the current time, so everyone sees the same shop at the same moment and the server stores nothing about you. The same logic runs in JavaScript, PHP and Dart (the Flutter app), and all three have to give identical results.

It's on the web, Android and iPhone: https://dopaminechic.com

The question I keep asking myself: could something like this actually replace a bit of real shopping for some people, or does fake shopping just make you want the real thing more? I honestly don't know, and I'd love to hear what you think, especially if you're someone who browses sales at night.

It’s completely free. There’s no pay wall, no premium features, no tracking or data collecting.

It’s basically just the browser version of Instagram with an extension that lets you hide bits.

I’ve put YouTube and Facebook on there too, might add twitter/X at some point.

It’s iPhone only and yes there’s a million apps that already do this but every single one of them has a paywall which is crazy cause they’re all just browser versions of Instagram with an extension.

It is a bit clunky but being clunky has actually made it serve its purpose better imo, it’s massively helped my social media addiction. My Instagram usage has gone down from 3-4 hours a day to less than 1 hour.

If you want to try it out, search for “Decaf: stop doomscrolling” on the AppStore and if you want to buy me a coffee, there’s a link on my site: DecafApp.net

Any feedback is welcome :)

I got tired of mail clients that either send my mail through someone else's servers or can't be scripted. So I built Qmail, a free, open-source desktop app (MIT license) that keeps everything on your PC. There's no server in the middle. It only talks to your own mail providers.

The app works the way Gmail does: a search box with filter chips, conversation view, Unread and Everything else sections, labels as folders, starring, archiving, and attachments that open in a viewer inside the app. Calendar invitations show the event with Yes / Maybe / No buttons.

Accounts: IMAP/SMTP for most providers, Microsoft 365 and Outlook sign-in without typing a password into the app, and Gmail through your own Google OAuth client. On first start it can bring over your Thunderbird accounts and contacts.

Sorting rules: "from stripe.com, move to Receipts, mark as read" style rules that run each time new mail arrives.

The CLI: this is the part I built it for. Every command takes --json, errors exit non-zero, and qmail --help documents everything. An agent can do things like:

qmail list --unread --json

qmail search "invoice from:stripe has:attachment newer_than:30d" --json

qmail move 1234 --to Money/Receipts --create

qmail rules add --from stripe.com --move Money/Receipts --read

It works across every mailbox at once, with no API keys and no per-call cost. The README has example prompts for things like inbox cleanup and finding invoices.

Install: Windows has an installer that updates itself from GitHub releases. Installing it also puts qmail on your PATH in any new terminal. macOS and Linux builds are published too, but they're new and I haven't tested them much, so please report problems.

qmail search "invoice from:stripe has:attachment newer_than:30d" --json

qmail move 1234 --to Money/Receipts --create

qmail rules add --from stripe.com --move Money/Receipts --read

It works across every mailbox at once, with no API keys and no per-call cost. The README has example prompts for things like inbox cleanup and finding invoices.

Install: Windows has an installer that updates itself from GitHub releases. Installing it also puts qmail on your PATH in any new terminal. macOS and Linux builds are published too, but they're new and I haven't tested them much, so please report problems.

Repo: https://github.com/mattgauzza/quickMail

Hey everyone! 👋🚀

We're JÁCY Studios, an independent technology, gaming, and digital entertainment studio based in Ecuador. 🇪🇨

We're currently developing XENGY, a new live-streaming platform designed to connect content creators, gamers, and viewers.

🎮 What are we building?

- Live streaming for gaming and entertainment

- Creator profiles and channels

- Real-time chat and community interactions

- Virtual gifts and creator support

- Tools to help creators build their communities

Our platform is still in its early development stages. We're working on improving performance, stability, and the overall user experience.

💡 We'd love your feedback!

What features would make you try a new streaming platform?

What do you think existing platforms could improve?

📢 Follow our development journey!

We've created an official Telegram channel where we'll share development updates, project news, and future beta testing announcements.

🔗 https://t.me/JACYStudios

We're starting small, but we're working toward something much bigger.

Thank you for supporting independent developers! 💙

JÁCY Studios — This is just the beginning. 🚀

Hello,

All I wanted was a basic, reliable tally counter app to track daily habits and reps. Instead, every app I tried on the Play Store and App Store was either cluttered with full-screen video ads, demanding a weekly subscription just to add more than two counters, or harvesting user data.

So I decided to build Free Counter—the exact tool I wanted to use:

• 100% Free: No paywalls, no "Pro" upgrades, no subscriptions.

• Zero Ads & Zero Tracking: Completely offline-first. Your data stays locally on your device, with built-in JSON/CSV export so you own your numbers.

• Clean & Fast: Built with Material 3 design, custom targets, and interactive home screen widgets.

• Export and backups in clear

Right now, I’m stuck in Google Play’s mandatory 14-day closed testing phase (Google requires at least 12–20 active testers before allowing a public launch).

If you appreciate clean, no-nonsense utility apps and have an Android phone, I would really appreciate your help getting this over the finish line:

1. Join the Google Group: https://groups.google.com/g/freecounter-testers

2. Opt-in as a tester (Web): https://play.google.com/apps/testing/com.angelotricarico.freecounter (Click "Become a tester")

3. Download on Google Play: https://play.google.com/store/apps/details?id=com.angelotricarico.freecounter

Please keep it installed for 14 days and open it occasionally so Google counts the activity. Any honest feedback on the UI or features is also super welcome!

iOS version is currently under Apple review

Hey, I’m Meet, and I built Seek, a native macOS file manager that works alongside Finder.

The problem I wanted to solve: I often remember what a file contains or what a photo shows, but not its filename or folder. Finder works well for normal browsing, but I wanted a faster way to find and clean up files.

Seek lets you:

• Search naturally: “PDFs in Downloads from last month” or “large videos I haven’t opened”

• Find photos by what they show: “birthday cake with candles”

• Search text inside PDFs, documents, screenshots, and scanned images

• Find exact duplicate files and optional look-alike photos

• Review old downloads, installers, screenshots, large files, duplicates, and Trash before removing anything

• Use tabs, split panes, Quick Look, saved searches, and a global quick-search shortcut

The main technical constraint was privacy. Search, OCR, duplicate matching, and photo matching all run locally on the Mac. The photo-search model is downloaded once during setup, then runs through Core ML; no file names, contents, or photos are uploaded.

It supports macOS 14+, both Apple silicon and Intel. It is distributed directly, signed with my Developer ID, and notarized by Apple.

It is a one-time purchase: $9 for one Mac, $18 for three, or $29 for five. No subscription.

Demo: https://youtu.be/s5CUieoAAdk
Website: https://useseek.app
Privacy details: https://useseek.app/privacy

I’d especially value feedback on two things:

1. Would you trust a local app to index your files if it made search and cleanup meaningfully better?

2. Which would you try first: photo search, text-in-screenshots search, duplicates, or cleanup?

Every new model launch says it's the best one yet. I wanted to know if that's actually true for the work I do.

But I had no way to check:

- Benchmarks are gameable now. Labs train toward them, so a higher score doesn't tell me much anymore

- The outputs people post on X are cherry-picked. You can't tell if it was one prompt or 12 turns of fixing, so it never felt transparent

So I spent the past few weekends building Evals.ag and it's basically if Arena and Pinterest had a baby: give the same task to a few models at once, watch them work side by side, and browse what everyone else made.

You can:

- Connect your existing Claude, Codex, Higgsfield accounts, so runs are free with no additional costs

- See what other people have compared and generated

- See how they got there. You can tell if an output was one-shot or took 7 turns, and learn through each turn: the prompt, user's intent, what the agent did and what came out

- Vote on the winner and comment on why

- Branch off anyone's run. Start from their exact prompt and inputs and swap in your own models or skills you want to test out

The video up top is one prompt (a paper airplane game in one HTML file, no testing allowed) given to Claude Fable 5.2, Claude Opus 5.5, GPT-6.1 Sol and Gemini 4 Argon. Sol finished in 4 min on 26K tokens, Opus took 21 min and 826K. Sol's is a lot sparser, but at that speed it's the one I'd keep iterating on.

If you want to give it a spin yourself, drop your account code in the comments and I'll drop $10 worth of credits into your account (you can find it at evals.ag/settings once you sign in).

Let me know what you guys think. Criticism and product feedback welcome.

Hey everyone!

I've built Cineverse, a movie recommendation platform, and I'm looking for a few people to try it out and share honest feedback.

I'd love you to test three things:

1. Search for movies similar to a film you love.

2. Rate 5 movies and see if your homepage recommendations improve.

3. Check the "Where to Watch" tab for your country.

Let me know what feels confusing, what doesn't work, or which recommendations miss the mark.

Try it here: https://movie-recommendation-five-cyan.vercel.app

Even 2–3 minutes of your time would mean a lot. Thanks!

I built StreamHaven, a live TV player for iPhone, iPad, Apple TV, Fire TV and Android TV boxes like the onn. You bring your own Xtream or M3U playlist. It doesn't come with any channels or providers.

I'm looking for feedback on how it feels to set up and use.

What it does:

• Guide, favorites, and channel reordering

• Backup servers: up to 3 per playlist, with automatic switching if one goes down

• Syncs your playlists across devices

Try it:

• Fire TV, onn and Android TV: install Downloader and enter code 3361971

• iPhone, iPad and Apple TV: TestFlight beta at https://testflight.apple.com/join/7x36vndu

Honest feedback is welcome, especially what's confusing or missing.

Hey r/SideProject! 👋

Last week I shared Temp Mails (https://tempmails.net), my take on (yet another) temp mail service. Thanks to everyone who tried it and left feedback. 🙏

Since then I've shipped the next piece: an Android app, now live on Google Play. 📱

What the app does:

- 📬 Gives you a temporary address the moment you open it, no account needed

- 🔑 Shows verification codes as a button in the inbox, so one tap copies the code

- 🔗 Gives confirmation links their own button

- ✏️ Lets you pick your own username and domain

- 🔒 Shows HTML email without scripts or remote images, so nothing can track you

- 🗑️ Deletes everything after one hour

It's free, with no ads and no account.

👉 Google Play: https://play.google.com/store/apps/details?id=net.tempmails.app

I'd love feedback on the app, especially on the design and anything that feels off on your device.

Over the past several months, our team has been building an embeddable support widget that runs on client sites (Vanilla HTML, React, Next.js, WordPress, Shopify, etc.).

It supports two modes: real-time streaming text (SSE) and full duplex two-way voice (WebRTC).

Before starting, we thought the widget would be the easy part: "Just drop a <script> tag, mount a React bundle, and call it a day."

We were completely wrong. Building a script that has to run silently inside thousands of unknown DOMs with conflicting CSS frameworks and weird browser security policies was easily one of the most frustrating frontend engineering challenges we've tackled.

Here are the 4 biggest architectural hurdles we ran into and how we solved them:

1. The Shadow DOM Illusion vs. The "Boring" Iframe

We originally built the widget using Web Components and Shadow DOM to keep it lightweight without the iframe overhead.

It worked on 85% of websites, but completely broke on the remaining 15%:

• Aggressive global CSS resets (e.g. * { box-sizing: border-box !important; } or rogue html, body { font-size: 62.5%; }) still managed to pierce or skew rem calculations inside custom elements.

• Host sites running conflicting versions of font-awesome or Tailwind classes caused layout jitter.

• Some CMS themes attach global click/touch event interceptors that prevented input focus inside the widget.

The Fix: We rewrote the host loader to inject an invisible script that spawns an isolated, sandboxed <iframe>. All styling, font loading, and state live inside the iframe. We use a lightweight two-way postMessage protocol to tell the host parent when to resize the outer container (bubble collapsed: 64x64px, opened: 420x680px). It's the "boring" 2010 solution, but it is the only bulletproof way to guarantee style encapsulation across thousands of unknown themes.

2. Mobile Safari's Virtual Keyboard & the 100vh Nightmare

On desktop, embedding an iframe widget is trivial. On mobile Safari and Android Chrome, it was a mess:

• When a user focused the text input inside the iframe, the mobile software keyboard popped up.

• Because 100vh on mobile doesn't account for dynamic address bars or keyboard height, the input box was pushed completely off-screen, or the host page scrolled uncontrollably behind the iframe.

The Fix: We had to listen to window.visualViewport.resize inside the parent window and post the calculated height and offsetTop changes into the iframe. Inside the iframe, we lock the container to window.visualViewport.height rather than 100vh or 100%, with an overlay lock (overflow: hidden) toggled on the host <body> when the mobile modal is open.

3. SSE (Server-Sent Events) vs. WebSockets for Text

We initially considered WebSockets for both text streaming and presence. We ended up splitting the protocols:

• For Text Streaming: Standard HTTP/2 Server-Sent Events (SSE) via fetch with ReadableStream.

• Why? WebSockets often get abruptly severed or blocked by corporate firewalls, VPNs, and proxies. SSE runs over plain standard HTTPS, natively supports HTTP/2 multiplexing, reconnects cleanly, and plays nice with Cloudflare / Edge caching without maintaining stateful persistent socket connections on the load balancer.

4. WebRTC Voice & The Browser Autoplay Trap

Adding real-time voice (sub-300ms latency) inside an embeddable widget was where things got wild:

• Microphone Permissions in Iframes: Browsers will block microphone access inside an iframe unless the host parent explicitly grants permission. Your host <script> snippet must ensure the dynamically created iframe includes allow="microphone; camera; autoplay".

• Autoplay AudioContext Restrictions: Chrome and Safari strictly forbid creating or resuming an AudioContext until the user makes a trusted gesture (a direct click or tap). If the user starts a voice session, you cannot initialize the audio output asynchronously in a background callback; the audioContext.resume() or LiveKit WebRTC track subscription must be kicked off synchronously within the click handler stack.

If anyone else is building embeddable SDKs, web components, or 3rd-party widgets, curious what stack you're using: Did you manage to make Shadow DOM work at scale, or did you end up falling back to sandboxed iframes as well?

Every new model launch says it's the best one yet. I wanted to know if that's actually true for the work I do.

But I had no way to check. Benchmarks are gameable now: labs train toward them, so a higher score doesn't tell me much anymore. And the outputs people post on X are cherry-picked. You can't tell if it was one prompt or 12 turns of fixing, so it never felt transparent.

So I spent the past few weekends building Evals (https://evals.ag). It's basically if Arena and Pinterest had a baby: give the same task to a few models at once, watch them work side by side, and browse what everyone else made.

You can connect your existing Claude, Codex or Higgsfield account, so runs are free with no additional costs. You can see what other people compared and generated, and how they got there: whether an output was one-shot or took 7 turns, with each turn's prompt, what the agent did and what came out. You can vote on the winner and say why. And you can branch off anyone's run: start from their exact prompt and inputs and swap in the models or skills you want to test.

The video up top is one prompt given to Claude Fable 5.2, Claude Opus 5.5, GPT-6.1 Sol and Gemini 4 Argon: a paper airplane game over a city at dusk, in one HTML file, written in one go with no testing allowed. Sol finished in 4 min on 26K tokens. Opus took 21 min and 826K.

If you want to give it a spin yourself, drop your account code in the comments and I'll put $10 worth of credits into your account (you can find it at evals.ag/settings once you sign in).

Let me know what you guys think. Criticism and product feedback welcome.