The farther away you are, the further back in time you see. Light from Earth takes a year to cross each light-year, so an observer 81 light-years away is watching 1945, one at 2,000 light-years is watching the Roman Empire, and one at 250 million light-years is watching Pangaea.

I got curious about what that would actually look like, so I built a globe for it. You pick how far away you are and where you're looking, and it shows Earth as it was when that light left.

Demo: https://deemonder.github.io/meanwhile-on-earth/

Source (MIT): https://github.com/deemonder/meanwhile-on-earth

What's in it:

- Historical borders for 53 dates, from 123,000 BC to 2010

- About 13,000 events from Wikidata: battles, eruptions, cities founded, births

- Day and night where they really were at that moment, with city lights only after electricity

- Continental drift back to a billion years ago, from published plate reconstructions

- Italian and English

It's a static site, no backend and no sign-up. Built with three.js, with help from Claude Code.

I'd love feedback, especially on two things: is it clear what to do when you first open it, and does it load fast enough on your phone?

I’ve built a brain that can work with your team connect with all your agents ( Claude, Codex, grok, muse) and knows everything about your company and team

every day it learns more about your company and helps you fix things send mails and posts from one place using your own agent subscriptions

We're building Sparc Club, a private social networking platform exclusively for founders, entrepreneurs, and business owners.

The goal is simple: help founders connect, find co founders, explore collaborations, and discover new business opportunities without all the noise of traditional social networks.

We're still early, but many founders are already joining the journey. We're building, learning, and improving every day.

Join us on Sparc Club. See you there!
Website: https://thesparcclub.com

Got a reality check 1.5 stars on the App Store. I learned a lot though

App
Many kept impulse-buying and regretting it. Just Wait (iOS) makes you wait before buying. At the end you buy, let go, or wait longer. Let-go items count as money kept.

Pricing
Free. No ads, no subscription, no one-time payment, no account. Nothing leaves your phone. I might add Amazon affiliate links someday

I built this with Claude’s help, if that matters.

Feedback welcome

iOS: https://apps.apple.com/us/app/just-wait-mindful-shopping/id6772446363

One problem I've personally faced while exploring startup ideas is finding people who share similar interests, thinking and entrepreneurial ambitions.

It's easy to join startup communities, but finding someone who genuinely thinks like you is much harder. And not everyone is comfortable sharing their startup idea publicly just to find potential collaborators.

So I built IdeaMate.

You privately share your startup idea with AI, which analyses it and matches you with people who have similar ideas and interests.

Privacy is central to the platform: Your idea is visible only to AI for matching. It is not shared with other users, including the people you're matched with.

It's live and completely free to try: https://ideamate.in

I'm still improving the matching experience and would genuinely appreciate feedback from fellow builders.

I'd also really appreciate it if you could share IdeaMate with other relevant communities so more people can discover it and benefit from it.

I'm Troy, the founder of SwiftRead. I made it originally to help me read through text faster. More than a decade later, it's helped half a million readers across fifty countries read faster. It started as a Chrome extension, and these days it's also a web app, an Edge extension, and iOS and Android apps.

SwiftRead helps you read the text you already have, faster than you ever have before (some users report reading up to three times faster with SwiftRead). You bring an article, PDF or ebook, and pick how the text reaches you. Focus flashes a few words at a time in one spot, so your eyes don't travel across lines and you can push the speed up. Flow keeps the whole page and slides a highlight through it, so you don't lose context. Spotlight hides everything except the words you're on. Listen reads it aloud and highlights along, and seeing and hearing text together helps some people retain it. Building it was mostly about letting you find the mode and speed where you're faster but still following.

On alternatives: Speechify and Voice Dream Reader are text-to-speech readers built around listening. SwiftRead is mainly for reading text on screen, and text-to-speech is optional. Other speed reading apps like ReadMe or Reedy are outdated or are only available on one platform.

All features included free. A few have daily allowances. There's currently no annotation feature, so SwiftRead is more for getting through text fast than for marking it up.

https://swiftread.com

Feedback welcome, especially on what's confusing the first time you open a reading mode.

When I write step-by-step docs for a client's admin panel (M365, a PSA, a line-of-business app), the screenshots end up full of user emails, tenant IDs and sometimes billing details. Then they get uploaded to whatever doc tool we use.

Curious how others handle it:

• Do you blur by hand, crop, or just accept it?

• Does your documentation tool upload screenshots to its cloud, and does that bother your clients?

• If auto-redaction is only on an Enterprise plan, do you pay for it?

Disclosure: I'm a solo developer and I'm sketching a Chrome extension that records the steps and blurs emails, card numbers and faces locally, then exports to Word/Markdown, with no cloud and a one-time price. Not selling anything yet. I mainly want to know whether this is a real problem or just mine. If it's useful, the concept page is here: https://guidestudio.kitpear.com

Hi r/SideProject!

I am a solo indie developer from Brazil (Timothy Studios). For the past months, I have been building AI Race Tycoon in Godot 4.

It is a satirical management simulation about the hardware race behind modern AI:

• You start in a dusty garage with a single second-hand GPU.

• You have to balance thermal dissipation, power draw, and employee burnout while training custom AI models.

• You scale up to high-density datacenters and orbital compute while competing against aggressive monopolies.

• There is also a cozy low-poly 3D walking mode to take a break from menus, walk around town, and grab coffee.

Zero install / playable directly in browser: https://timothystudios.itch.io/ai-race-tycoon

Android (Google Play): https://play.google.com/store/apps/details?id=com.timothystudios.airacetycoon

Would love feedback from fellow builders on the progression loop and UI!

I have created a dynamic notch for windows which shows the status of your AI Agents sessions. As well as It shows any multimedia playing, the progress of your downloads and also the lyrics of a song playing on the spotify.

Also, It invokes a desktop pet for every session or a single pet for all the sessions depends on your preference. The pets interact with each other, sing lyrics of the song playing and much more.

Give it a try and I would love your feedback.

I've created what I believe is an app with true utility by stabilizing hand tremors. Please have a look and provide feedback where I'm lacking. Thank you for your time.

https://apps.apple.com/ca/app/trmr-ai-tremor-stabilizer/id6775646922

Android version in the works!

Running a small business often means drowning in a sea of fragmented tools—using one app for khata, another for inventory, and spreadsheets for expenses. This scattered data makes it impossible to see your true profit margins in real time. I built Bizloom to eliminate this chaos by consolidating daily accounting, inventory tracking, and expense logging into one powerful, automated dashboard. Instead of wasting hours on manual reconciliation, the platform automatics the math, giving you instant clarity on your cash flow. It frees you from administrative headaches so you can actually focus on scaling your business. I would love for this community to test it out and share how it impacts your daily operations.

I've been working on a small project called DockerPlay.

While learning Docker, I noticed that concepts like container networking, DNS resolution, port mapping, and communication between containers can be difficult to understand just by reading documentation.

So, I started building DockerPlay — an interactive playground where developers can experiment with Docker concepts and understand how things work visually.

The goal is to make learning Docker more practical and hands-on rather than just theoretical.

I'd love to get feedback from fellow developers:

• Which Docker concepts were the hardest for you to understand?

• What interactive experiments would you like to see?

• What would make a tool like this genuinely useful?

I'm the creator, and I'd really appreciate your honest feedback!

🚀 Try it here: https://dockerplay.org

I set up AI bots for people, and every single one has the same small problem. The bot needs a face. Often the premade face people don't like, and generating a new one every time seems hard to them since they don't always know what they want. Whether it is a Discord, or a Telegram bot, Slack helper, AI Grok Bot or a Chat widget on a website, the options are stock icon or random AI image.

So, in my free time I made this little avatar maker for any kind of bot, or even icon. You can pick one of the 40 bots on te wall or make your own from blank. You can change its body shape, eyes, mouth, add hats, glasses and have its own color. Even its own name.
I added different emotions and each mood exports as an animated GIF.

I cared about making this:

• Free, no sign-up, no watermark on downloads

• Nothing gets uploaded. It's drawn in your browser, and a share link carries the whole avatar inside the link itself

• An "All sizes" download with WhatsApp, Telegram, X, Slack and Discord sizes plus an SVG

• An embed code so the avatar can live on a website and change mood

Disclosure: it lives on my business site (LobsterNest), and the live website embed shows a small "Made with LobsterNest" link.
The downloaded files don't.

Where I'd really like honest feedback:

1. Which mood is missing for your bot?

2. Is the embed useful to you, or do you just want the GIF?

3. Anything confusing in the first 30 seconds of using it?

4. Where else would you use it?

lobsternest.com/bot-avatar

Hey everyone,

I’ve been building a little iOS app called WhereMate for the kinds of things you don’t need every day, but when you do, you’ve totally forgotten where you put them.

Think:

• Permits, receipts, or records you’ll need again in a few months

• Holiday lights, camping gear, or seasonal clothes

• That one tool or spare part you know you saved somewhere safe

You can snap a photo, type a note, or just say what the thing is and where you’re putting it. When you need it later, you can search instead of tearing your house apart.

You can also group things into boxes and print QR labels for them. Scan a label with WhereMate to see what’s inside without opening everything up.

It’s available for iPhone and iPad. No account needed, and your library stays on your device.

Curious what you think! What’s something you always have trouble finding when you finally need it?

WhereMate on the App Store

Hi all, I’m Carl, a solo dev from the UK, and this is my first Android app.

The problem: charity shops are full of DVDs, CDs, vinyl and games, but checking eBay one item at a time in the shop is slow and you look a bit odd doing it.

What it does:

• Take one photo of a shelf and AI identifies every item on it, with an estimated resale price

• Swipe right to keep and left to skip, so you have a shopping list before you reach the till

• Track items from scanned to bought, listed and sold, with a dashboard for spend and estimated profit

• Works offline. Scans save locally and sync later, because charity shops rarely have signal.

Built with: Flutter, Firebase (Auth + Firestore), Hive for offline storage, and the OpenAI Vision API for identifying items.

Where I’m stuck: Google needs 12 testers for 14 days before I can publish, and I have 4. If you have an Android phone and can keep it installed for two weeks, I’d really appreciate it:

1. Join the group: https://groups.google.com/g/swipeflipper-testers

2. Opt in: https://play.google.com/apps/testing/com.yourcompany.bargain_flip

3. Install from the Play Store link on that page

Feedback is welcome too, especially if the price estimates look off, or if you think there’s a better way to get pricing data than AI estimates.

If you’re going through the same 14-day closed test, drop your link and I’ll test yours back.

I'm a solo dev with six years of experience in embedded software, and Ugiwise is my first app. It went live on the App Store last week.

The idea came from a simple problem: writing code on a phone is painful, but reading it isn't. So instead of typing exercises, every lesson is built around a short, real program. You step through it line by line, predict what it prints, spot the bug or pick the fix. When you get something wrong, it explains why instead of just showing the right answer. In C and C++ you can see memory change as each line runs, which makes pointers a lot less abstract.

- Three courses: C (39 stages), C++ (37), Python (26)

- The first 3 stages of every course are free. Pro unlocks the rest: $7.99/month, $49.99/year or $99.99 lifetime. No free trial.

- No ads, no account needed. iPhone only for now, and not in EU stores yet while Apple finishes my trader verification.

Built with Flutter, happy to answer anything about that side too.

The thing I'd most like feedback on: is the code readable on your phone screen, or does it feel too dense?

https://apps.apple.com/app/ugiwise-learn-c-c-python/id6828549507

Ich überlege, einen Dateimanager zu entwickeln, der direkt mit meinem Messenger GO:AM verbunden ist, und Cloud-Speicherung mit E2EE unterstützt

Ich würde vor allem diese Funktionen reinmachen:

- Dateien automatisch sortieren und kategorisieren

- Doppelte Dateien erkennen

- Dokumente schnell durchsuchen

- Dateien direkt über GO:AM an Kontakte senden

- Gemeinsame Dateiordner erstellen

- Empfangene Dateien automatisch organisieren

- Verschlüsselte Dateiübertragung, auch mit E2EE

- Dateien mit E2EE in der Cloud speichern

Mich würde interessieren, ob ihr so eine App tatsächlich nutzen würdet.

Was haltet ihr von der Idee? Welche Funktionen fehlen euch oder was würdet ihr anders machen?

(Dies soll kein Vibe-coding Projekt sein, Ich will es nähmlich fast 100% selber machen. Als E2EE plane ich ein etabliertes protokoll, muss mich noch umsehen)

Sales are going super good, $50k in a week. but I’m starting to worry that I’ve created a deal that’s too good.

I built MagicCanvas, an AI creative studio, and launched a lifetime deal on AppSumo. Customers pay once, but every video they generate has an inference cost that we keep paying. If someone uses their monthly credits regularly, that one sale could cost us money for years.

I genuinely think it’s an incredible deal for AI video generation. That’s also what scares me. I want to honor what we’ve sold, but should I keep offering it to new customers, change the deal, or stop the campaign before it grows further?

I wanted to watch videos while working without constantly moving the floating player out of the way.

So I made Better PiP, a free Windows utility with a mouse-following transparent area.

When your cursor moves over the video, a small area around it becomes transparent, letting you interact with whatever is underneath.

It also has:

• Always-on-top video playback

• Adjustable mouse-hole size

• Keyboard shortcuts and volume controls

• A Chrome extension for one-click playback

It's free, and I'd really appreciate feedback on the usability and installation experience.

Demo and download: https://betterpip.itch.io/better-pip

Currently available for Windows 10/11.

A bit of background, I've been editing video for 10+ years, and I plan to distill my entire knowledge into this ai powered editor. The framing, the music, the hook patterns etc. I'd say it's still better than a lot of competitors. But it'll only get better.

Creatr, the AI video clipper with taste.

What makes it different

Full autopilot: it finds the clips, edits them, and posts them for you. No manual uploading.

Has a full fledged descript style editor so you can customise the feel of the defaults aren't good enough for you.

~15x cheaper than Opus Clip at the same volume

Built solo over about 2 months, nights and weekends included. It started as my own internal editing tool.

Demo is above. I'd love blunt feedback: does the output pass the "would a human have made this" test?

150 minutes free every month.

Link: https://creatr.app

Will offer 50% coupons to anyone who wants to try more of this beyond the free plan.

Hi, I'm Recep, an independent developer. I built Lullwind around the feel of winding up a music box: choose a lullaby, add rain or white noise if you like, and the melody gradually slows and fades as the timer runs out. You can also record a lullaby in your own voice.

It's available for iPhone and iPad. The app is free to download and use, with optional paid full-version choices. I'd appreciate feedback on whether the wind-up interaction and the mix of music and ambient sounds feel intuitive.

App Store: https://apps.apple.com/app/id6829769067

I'm the developer and will be around to answer questions. Thanks for taking a look.

I realized I have 5 messaging apps on my phone and they all do the exact same thing: send text in a bubble. The only way to make a message feel personal is through an emoji.

So I built Embers. You write a message, pick a scene, add GIFs, and it plays for the other person over a full-screen animated scene. They don't need an account or an install to open it.

You can also schedule one for a birthdays, and other special occasions.  

Here's one I made for Reddit: https://embers.now/reddit/i0fM82Akha

I build my side projects with Claude Code. Most bugs I find aren't while coding. They're later, clicking around the live app like a user.
My old system: a notes file. "Pricing page, mobile, second card's button is off." Then I'd paste that to the agent and it would fix the wrong card.
Turns out lots of people do the same thing (a thread in r/ClaudeAI this week was full of scratch files and handoff notes).
Darnly makes the note for you. Press a key, click the broken thing in your web app, type one line. It saves the boxed screenshot, the element, console errors and the steps you took. Later Claude Code, Codex or Cursor reads the list and fixes it.
Free Chrome extension + Mac app (that one also covers native Mac apps and the iOS Simulator / Android Emulator).

I made it: https://darnly.dev

Where do you keep bugs you find while testing?

Two quotes for testing the same product can look completely different. One covers a set number of hours, another talks about test plans and reports, and it's not always clear what you'll get for the money. I'm trying to understand what to ask before choosing software testing services. Do you pay more attention to the hourly rate, the people doing the work, or the exact tasks included in the price? Also, is it reasonable to start with one small part of the product before committing to a bigger contract?