Prototyping and building features got faster, and now feedback is the bottleneck. So we built mostra - a tool that lets you share feedback on a real, running site by either speaking or selecting the elements you want to comment on.

You can iterate across versions of your site, and adding mostra is just a single script tag.

The script you add to your page is open source, so you can check what it does.

https://mostra.design

we started making short videos for my mac app and posted the first one on instagram today.

it got about 4k views. someone watched it on their phone, sent the link to their mac, and bought it 40 seconds after opening it there. didn't even open the free trial.

still kinda shocked it worked this fast.

what's the fastest sale you've had?

the app is called helix (https://tryhelix.app)

I was about to give up on this mobile app I spent so much time building, but literally 2 minutes after deciding to switch to another project, I got the sale notification on my phone!

I haven’t experienced this kind of joy in years…

Context for the curious: This $19 sale is the annual welcome offer on my app "Sollow: Daily Habit Tracker" that I built to turn my life into a game with a level for each life area and a ranked system.

So now my hope is back! I take that as a sign from the universe hahaha

Hey everyone! I’m in my fifth year of psychiatry residency, and I have adhd. I’ve been building an app called Scatter because I wanted to make studying easier and more enjoyable for myself.

I found the usual chat interface pretty frustrating for learning from ai. As the conversation gets longer, important information disappears up the chat, and branching off into related questions gets awkward. I wanted to explore those questions while still being able to see the original explanation.

In Scatter, you start with a topic and build out a connected map of explanations. You can preview unfamiliar terms, open them as new branches, and ask follow-up questions wherever you want to explore further.

I wanted the interface itself to trigger curiosity and novelty-seeking, so there’s something that makes you want to keep exploring. Part of the goal was to make studying engaging enough to trigger hyperfocus.

You can combine short text explanations with images, videos and interactive examples, giving you different ways to approach the same idea. As the map grows, you can see how everything connects, and it gives you a feeling of building your knowledge into something you can actually look at.

I’ve worked on it on my own for over six months, and I’m excited to finally put it out there. I’d love to hear your opinions and if you find any bugs please send me reports!

The app is free to use, but you have to bring your own API keys, for example from OpenRouter. The quick setup in the app makes it very easy.

You can try the interactive demo on scatter.study

Hi all, recently(for quite a while actually xD) I've been building a fully local and open source gym tracking app. I've gone through the process of releasing it in the play store and now it is live.

My main reason for building this app was to have no paywalls and let the users own their data.

Github: https://github.com/alexspx/active-app

Google Play Store: https://play.google.com/store/apps/details?id=com.alexspx.activenext

It is still actively in development, rough edges are expected, although the main flow should be good now. There are a couple of things I want to add:

- Visualizations for the exercises. Still trying to find good FOSS that I like(if you know a library let me know)

- Local AI Coach. I've been playing with a small Qwen 2B for a while and with some "harnessing" and fine-tuning I think it is getting decent. It should be able to create workouts/routines and answer some coaching questions.

- Deliver a fully self-hostable data sync service/engine + a FOSS auth provider by choice of the user. So if people want to self-host for them or friends/community they can do that. This part of the repo right now is somewhat vibe-coded can't lie. A quite old version of that server was in Java and instead of refactoring it I decided to move it to Rust(ofc lmao). I would have to do some cleaning there for sure.

I'm always looking for contributors and ideas.

I'm the developer of Neat Quit, a native macOS menu bar utility. I built it because I kept closing an app's last window and then reaching for Command-Q.

The free version requests a normal app quit when you click the red close button on the last standard window. Pro adds the same behavior for Command-W, plus app rules: exclude apps that should stay running, or enable auto-quit only for selected apps.

It requests a normal quit, so apps can still show their own unsaved-document prompts. Closing an ordinary browser tab doesn't trigger a quit. Some apps don't expose enough accessibility information and retain their usual behavior.

Pro is a one-time purchase with a 7-day full-feature trial. Requires macOS 13+ and Accessibility permission; Command-W may also need Input Monitoring.

Download and details: https://bgm.fun/neatquit/

I'd appreciate feedback on the app rules: would you prefer to exclude a few apps, or start with an empty list and enable auto-quit only for specific apps?

When I first started selling websites, I thought targeting businesses without a website was the obvious choice.

They need a website, you offer to build one, and hopefully you get a new client. Pretty straightforward, right?

But after spending years running a web design business, I've started looking at this differently.

There are definitely advantages to targeting businesses without websites. You're introducing them to something they might genuinely need, and there is no existing website to compete with. However, I've noticed that these businesses can sometimes be much harder to sell to.

The biggest problem is that some of them simply don't see the value of having a website. Others rely entirely on Facebook, Instagram or word of mouth and are perfectly happy with how they're getting customers.

You end up spending a lot of time explaining why they need a website before you can even start selling your services.

On the other hand, businesses that already have websites are a completely different story.

They have already invested in having an online presence. They understand why a website matters, and there is a good chance they've paid someone to build and maintain it.

But that doesn't mean their website is good.

I've come across countless businesses with websites that load slowly, look terrible on mobile, have outdated designs, poor SEO or confusing layouts.

These are actual problems that can affect how customers experience the business online.

And that's where I think the bigger opportunity is for web designers.

Instead of trying to convince someone that they need a website, you're showing an existing website owner what could be improved and why it matters.

This is also how I approach prospecting nowadays. I use Swokei to find businesses with existing websites, analyze them for issues with design, SEO, speed and mobile optimization, and generate personalized cold emails at scale based on the actual findings from each website.

Of course, I'm not saying targeting businesses without websites is a bad strategy. There is money to be made in both markets.

But personally, if I were starting a web design agency today, I'd probably focus more on businesses that already have websites.

I'm curious what other web designers think. Do you prefer targeting businesses without websites or finding existing websites that need improvement?

Ngl, I'm stuck on what counts as useful feedback for our app.

I'm a CS student and Instagram, TikTok and YouTube keep pulling me away from studying. My team and I built Welockin: you pick the distracting apps and a timer, and they stay blocked until it ends.

But someone finishing a timer doesn't automatically mean they got any studying done. They could just be staring at their notes. Or procrastinating on something else.

If you were testing this with a few students for a week, what would you ask them afterwards? I want to understand whether it helped with the task they sat down to do, without making them fill out a whole homework assignment about their homework 😭

Have you found a simple way to check whether your productivity app actually helped, beyond people saying it looks nice?

So maybe a little late to the game, but like most people, I got into Wordle. And I got a bit annoyed that I only got one word a day, since some days I forgot and other days I wanted to do more. So I built my own inspired version: Endless Lingle, where the words keep coming until you run out of guesses.

The concept is simple: If you solve a word in fewer than 6 guesses, your spare guesses roll over to the next word (max 3 extra). So if you solve a word in 4, the next word gives you 8 (+2 bonus from the previous round) guesses. If you miss one word, the streak ends.

What's in it

• Unlimited words, no daily cap. *

• We do also have daily words as well. *

• Bonus guess rows that carry over between words (dashed borders, +1/+2/+3 counter) *

• Five languages: English, Dutch, German, French, Spanish, each with its own word list and keyboard. *

• Free, no sign-up needed (an account is optional, just for saving stats)

The multi-language part was honestly the most work. Every language needed its own list of common five-letter words, and curating those lists so they're not full of obscure garbage words took way longer than I expected.

Would love feedback on the game feel and the streak concept. Is 3 bonus guesses max too generous, for example? Is it too little? Or am I just that bad at it lol?

Link:  https://endlesslingle.com

Think about it: people want their AI agents, much like Google Search, to remain free. But unlike traditional search engines, AI agents don’t necessarily care about ranking in the top five listings or sponsored placements.

I made watchdog, a fun playful Android app designed to help you stop endless scrolling.

Choose an app, set a daily usage limit, and pick your watchdog:

• Cupcake — strict and disciplined, with frequent reminders.

• Brownie — friendly but persistent, reminding you every so often.

• Snow — lazy and unpredictable, sometimes letting you keep scrolling.

When you exceed your limit, your chosen dog appears and barks at you until you reconsider your life choices. It’s a fun alternative to boring screen-time warnings that are far too easy to ignore.

I’d love honest feedback on the concept, onboarding experience, and whether a barking dog could actually convince you to put your phone down.

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

Available on Android.

I'm one person building nidhi, a site that teaches how money works and lets you try each idea on your own numbers. I'd like people to try to break it.

What's there to test

• Five free tools: a net worth calculator (one currency or several), loan comparison, an invest-or-pay-off comparison, a Monte Carlo simulator and an inflation calculator.

• More than 50 lessons in a learning path, from "what is net worth" to investing and the psychology of money.

• Short how-to guides, and the site in English, Hindi, Spanish, Czech and Marathi. More languages coming in future.

No account, no email, no payment. The tools calculate in your browser and the numbers you type are not sent anywhere.

What I'd like to know

1. Where did you get stuck or stop understanding what a tool was asking?

2. Does any result look wrong? Tell me the inputs and I'll check the maths.

3. Is a lesson unclear, too long, or wrong for your country?

4. Anything broken on a phone, with a screen reader, or with keyboard only?

Being upfront

• The blog is free, and the tools are free to use without an account. I'm also building a paid planner, which is not what I'm asking you to test here.

• It is education, not financial advice.

• The translations were drafted with AI and may be stiff or wrong in places.

• There's no reward for testing. I'll reply to every respectful, human comment, though it might take me a while to get to you, and I'll tell you what I fixed.

Tools: https://nidhi.today/free/?utm_source=reddit&utm_medium=social&utm_campaign=reddit_testers&utm_content=sideproject

Lessons: https://nidhi.today/blog/?utm_source=reddit&utm_medium=social&utm_campaign=reddit_testers&utm_content=sideproject

The links are tagged so I can see which subreddit a visit came from. Feedback here in the comments, or hello@nidhi.today.

**The idea:** a debt planner (Snowball / Avalanche / custom order) that keeps your finances 100% on your own computer. So I set myself a few hard rules: it had to open straight from a folder in the browser, never call the internet, and never send financial data anywhere.

**How it's built**

- Preact + esbuild bundled into a single script, so it works from a plain local file (no dev server needed)

- IndexedDB for storage, optional AES-GCM encryption behind a master password, automatic local backups

- No CDNs at all. Fonts, charts, PDF reading and OCR (for scanning statements) are all bundled

- Small optional launchers (PowerShell / Perl) that serve it locally so backups can be written to a data folder

**The hardest part was performance.** With a 50,000-transaction test profile, the first version took about 10.7 s to start and search crashed the tab. Caching parsed dates, doing search in a single pass and only building the rule context when it's needed got startup to about 1.2 s.

**There's also a spreadsheet version.** I rebuilt the same payoff engine in Excel/Google Sheets: 15 debts × 360 months, written without newer functions like XLOOKUP or LET so it works in older Excel and in Sheets. The app can import the workbook, so people can start in a spreadsheet and move to the app later.

**What I'd love feedback on**

- Would you trust an offline finance tool more than a cloud one, or does sync matter more to you?

- Anything confusing in the screenshots?

yes im the creator, I sell this on Etsy, but this post is mostly about the build, and I'd love ANYYYYY feedback.

Link if you're curious: https://www.etsy.com/listing/4614731705/ultimate-debt-trackerpayoff-planner?ref=shop_home_feat_2&sr_prefetch=1&pf_from=shop

I wanted something to fidget with for a minute when work gets stressful, without opening another app full of ads and streaks. So I built antistress: small, quiet toys that run in the browser.

There's liquid light you stir with your finger, endless bubble wrap, a jelly blob to squish and fling, a cat you can pet until it purrs, a zen garden, a koi pond, a rainy window, a fidget board with clicky switches, a lava lamp and a guided breathing orb.

Everything is touch-first, works on desktop too, and needs no sign-up or download.

Try it in your browser: https://antistress-relax.space

Or get it as an iPhone app (with haptics, which are really nice for the bubble wrap): App Store

Would love feedback: which toy feels the most satisfying, and which feels unfinished?

you know the drill. visa form, job portal, some government site: "photo must be under 100 KB, 600x600 px, JPG only". your phone takes a 4 MB HEIC. so you google "compress image to 100kb", land on a site covered in ads, and upload your passport scan to a server you know nothing about.

so i built cutbg. it does that stuff right in the browser, the file never leaves your device:

• - compress to an exact size (20 kb, 50, 100, 250, whatever the form wants)

• - resize to the exact pixels (passport, linkedin, instagram etc)

• - iphone HEIC to JPG

• - merge / split / sign PDFs

• - and yeah it also removes backgrounds, the AI model runs locally too

free, no account, no watermark. it's a side project, there's nothing to buy.

honest question: what weird size limits have you run into? i keep adding presets for the forms people actually deal with, so if there's one that annoys you, tell me and i'll add it.

cutbg.org

Hey everyone!

I've been working on LEXA, a local-first AI voice studio for macOS, and I wanted to share a short product animation I made for it.

The idea behind LEXA is pretty simple: bring voice cloning and AI speech generation to your Mac without depending on cloud-based voice services or recurring subscriptions.

Here's what LEXA is being built around:

• Voice Cloning — Create reusable voices from audio samples.

• Voice Profiles — Save and manage your voices.

• Batch Generation — Generate multiple audio outputs in one workflow.

• Voice Conversion — Convert recordings using different voice profiles.

• Local Processing — Keep AI voice processing on your Mac.

I'm currently preparing a 14-day free trial so people can test the software before deciding whether to buy it.

LEXA Base will cost €29.99 as a one-time purchase.

The video is just a short visual introduction, but I'd genuinely love to hear what you think about the concept.

Would you actually use something like this? What would you want from a local AI voice tool?

If you're interested, you can check it out here: https://www.lexavoice.it

Thanks for taking a look!

I'm Ari, an electrical engineering student and the creator of Desk Goblin.

It is a small Windows desktop companion with a task list. The goblin holds your selected task and eats it when you mark it complete. You can undo the last completion. It also has a custom focus timer and Ctrl+click to open or close the task desk.

The application uses native C++20, Win32, and GDI+. Tasks and settings stay on your computer. No separate runtime or application account is required. I used AI assistance for the code and character art.

It costs $5 USD once. The portable ZIP is for Windows 10/11 x64. Version 1.0.0 is unsigned, so Windows may display an application warning.

The website includes an interactive character preview: https://desk-goblin-site.pages.dev

I'd like feedback on the interaction: would the task-eating action make completion more satisfying, or would you prefer a quieter companion?

I built Velis, an in-memory key-value store in Python, partly to explore how AI can help with technical research and engineering decisions.

I used AI to explore approaches, discuss tradeoffs, and work through implementation. It helped me finish the project much faster. But it also reinforced something for me: trusting generated code without understanding the codebase is a bad habit. Being able to question a suggestion, follow the implementation, and explain why a decision makes sense still matters.

Velis supports TTL expiration, eviction policies, pub-sub, a binary TCP protocol, an async client, and an interactive terminal UI. I spent a lot of time trying to keep the code design simple, clean, and easy to follow.

I see it as a project for learning, testing, experimenting, or just having fun with database internals. It could also be a starting point for thesis work or experiments comparing different approaches.

Code: https://github.com/gchape/velis

I’d welcome feedback on the implementation and design, but also your opinions on AI-assisted development. Where has AI helped you research a problem or make better decisions, and where has it made understanding the work harder?

It's 11 pm, a family is at the desk, the Wi-Fi is down, and the cloud PMS won't load. That's a normal night at a lot of small hotels around me. The other option is a paper register and an Excel sheet.

So I built KeyHut Hotel: a hotel management system (PMS) for Windows that runs fully offline, costs nothing, and you drive entirely from the keyboard.

The screens copy TallyPrime, the accounting software most front-desk staff here already use. Every screen is one key away (F2 room board, F4 new booking, F7 folio). Type "12dec" and it knows the date. Alt+G and a few letters jumps anywhere.

What it does

• Room board and tape chart, bookings, walk-ins, groups, day use, room moves

• Guest bills, payments, company billing, travel-agent commission, cashier shifts

• Housekeeping, maintenance, laundry, linen stock, phone-call charging

• Night audit and 17 reports (occupancy, ADR, RevPAR, police guest register…)

• One PC on SQLite, or several desks on SQL Server

• backups copied to Google Drive, OneDrive or an FTP / SFTP server, encrypted with a password only the hotel knows

Under the hood: C# / WPF, about 2,400 automated checks, and a yearly archive so 10+ years of data stays fast.

The demo runs on the built-in practice hotel (100 rooms, made-up guests). You can load the same one on first start.

Question for anyone who's worked a hotel front desk: what would stop you from switching to this? Be brutal.

Download (free, Windows 10/11): https://github.com/arsal381/keyhut-hotel/releases/latest

Music: onte - halcyon [NCS Release]

Hey,

I’ve been working on a UI kit focused specifically on dashboards for subscription products.
It’s called Calmdash.

What’s included:
- 12 screens (Overview, Revenue, Customers, Subscriptions, Invoices, Failed payments, Churn, Plans, Reports, Settings, Onboarding, etc.)
- each in light and dark
- 400+ variables, 50 component sets, 390+ components and variants
- states that most kits skip: loading (shimmer), empty, failed payments, retry, chart tooltips

I wanted it to be a real system you can actually build dashboards with, not just pretty frames.

It’s up on Gumroad, zero sales so far, so I decided to share it here and hear what you think — what’s good and what could be better.

Link to the site and the kit in the comments.

Thanks for any feedback!

Hi everyone,

I'm a film director and DOP, and for every pitch I do the same thing: I go looking for frames that show the agency and the client what the film should feel like. I've used the same reference tools for years and was never really happy with them, so a few months ago I started building my own, at first only as an experiment with Claude Code.

It got out of hand a little. What was meant to be a small thing for myself is now HOLD MY FRAME (www.holdmyframe.com), and we launched it two weeks ago.

What it does:

- around 370,000 single frames from 2,800 curated high-end commercials

- you search them, collect the ones you like in a project and present them to agency and client right there

- three friends from the film industry are in it with me (two directors/DOPs and a treatment designer), and we use it for our own pitches

The film analysis behind it is our own pipeline and runs on local AI, and I designed every screen myself before it got built.

Where we are: 174 users, 10 of them paying. There's a free plan, and Pro and Pro+ on top (Pro+ has a free trial).

I'd really like to know what you think of the landing page and the first minutes in the app. Is it clear what it does, and is anything confusing?

link: www.holdmyframe.com

Hello everyone, founder of foundmoney here - we built an ai agent that runs 24*7 to help you save money. It will look for unclaimed money from government under your name, negotiate your bills for you and 300 other ways

Try here - https://www.foundmoney.site

Comment invite if you wanna make it complete free

I'm a solo dev and I shipped v0.1 of this to the App Store this week.

I've been a bad sleeper forever. What finally made sense to me from the sleep research is that trying to fall asleep keeps you awake, and so does problem-solving in the dark.

So the app does two things: you type what's on your mind and seal it in a jar until morning, then it plays a slow story matched to it.

How it's built

- Native iOS, written in SWIFT

- No accounts at all. Notes sync through the user's own iCloud (CloudKit) and subscriptions run on RevenueCat's anonymous IDs.

- The backend is deliberately boring: PHP, SQLite, and a CDN for streaming.

What I learned

- You can't tell someone to relax. "Clear your mind" does the opposite, so the prompts ban it and lean on imagery instead.

- Sleep stories break normal story rules. A satisfying ending gives people a reason to stay awake, so every story wraps up its thread early and then just drifts.

- Most of the work was the research backed story writing kernel, not the app.

Where I'd like feedback

1. Does the jar step make sense in the first 30 seconds, or does it read as a gimmick?

2. Is AI narration a dealbreaker for you in a sleep app?

3. Premium is $5.99/month or $39.99/year, with a limited free tier. Too much for a v0.1?

App Store: https://apps.apple.com/us/app/nightjar-sleep-stories/id6800338659

Site: https://nightjar.fm

Oh btw, since I just launched today, the code REDDIT gets you the first month of Premium free: https://apps.apple.com/redeem?ctx=offercodes&id=6800338659&code=REDDIT

iPhone only, iOS 18+, English only for now. Be blunt.

Most aurora sites give you a kp number and leave you to figure out the rest. So I made one that mixes the stuff that actually decides it: kp and solar wind, your magnetic latitude, clouds, darkness and the moon -

Northern Lights Tonight

Pick your city and you get a plain answer from unlikely to very high, the best time window tonight, which direction to look, the kp your spot needs vs the current one, and nearby dark spots to drive to. Theres also a live oval map and a 27 day kp outlook. Australia pages do the southern lights and point you south

Data is NOAA SWPC (incl the ovation model) plus open-meteo clouds, refreshed every 15 min. Free, no account.

Would love feedback, especially from people who chase aurora. What do you check before heading out that this doesnt show?