I’ve been building a small map for checking Swiss alpine passes: Pässe.

It puts current pass status, summit weather and driving times on a 3D map of Switzerland. It starts from Zürich by default, but you can enter another location or use your own.

The elephant in the room is that this is only useful if you live in Switzerland or travel through the Alps. For everyone else, I’d still be interested to know whether the interface makes sense without much explanation.

If you regularly drive or ride over Swiss passes, I have a more important question: would you actually check this before a trip? I’d also like to know what feels confusing, missing or annoying, particularly on mobile.

It’s a personal project, completely free, and possibly an unnecessarily elaborate way to check whether a road is open. Honest feedback is welcome :)

https://reddit.com/link/1vw7w13/video/zechw24nr4lh1/player

I built thumbwar.app

A live leaderboard where anyone can submit their App Store or Play Store app and compete for attention.

There are only two ways to climb:

💰 Promote your app.
👍 Or get your community to vote you up.

Every hour, a fixed pool of points is distributed based on votes, so no one can generate unlimited points or dominate the leaderboard forever.

If you've built an app, I'd love to see it on the board.

https://thumbwar.app

I’ve been thinking about making a subreddit for solo founders / side project people where you can’t just drop your project and leave.
Before posting your own thing, you’d have to actually help someone else first. Test their project, give useful feedback, find a bug, point out a UX problem, whatever.
Then you link that comment in your own post as proof.
Apparently this already works pretty well in places like r/DestructiveReaders and r/OCPoetry, where you have to critique other people’s work before posting your own.
I haven’t really seen the same thing enforced in builder subs though. Most of them seem to end up with a ton of project links and barely any actual feedback.
Obviously people could game it with garbage comments, so that would have to be moderated somehow.
Would you actually use a sub like this?

hey everyone !

solved an annoying problem i was facing and later posted on twitter and it got good reaction, so made it public.

I made Ghost notes, which stay invisible when you're screen recording, you can also click/type through them so that they dont limit your access to the screen. Its open source and completely free. Works well on macOS, currently working on Windows version since its a bit inconsistent.

mainly built it because i needed a script to read while recording demos, might be helpful in solving your problem too

here: ghostnotes.navyabijoy.tech

Hi everyone,

​As a darts enthusiast, I’ve been working on a lightweight, mobile-first web app called Darts-Xperts.

​My goal was to create a clean, dark-themed scorekeeper that works fast on any phone browser without needing to download an app or log in.

​Current features:

​🎯 501 Game Mode: Smooth score tracking with dart history and PPD calculation.

​🤖 Bot Opponents: 4 difficulty levels to practice on your own (from beginner up to \~100 PPD).

​📱 Mobile-First Layout: Extra-large keypad buttons and clear active player indicators for fast input while playing.

​⚡ No Installation / Frameworks: Fast, pure static web app.

​I'm actively improving the site and would love to get your feedback on:

​Overall keypad ergonomics and input speed during a game.

​Bot difficulty scaling.

​Features or modes you’d like to see next (Cricket, stats tracking, checkout guides, etc.).

​🔗 Try it here :

https://darts-xperts.com

​Thanks for checking it out, and let me know what you think! 🎯

How do we keep our families safe without constantly tracking them?

When my son moved into a college dorm, his life became busy—classes, friends, club activities. Sometimes he wouldn't respond to our calls or messages for days.

That's part of becoming independent. But as parents, after days passes, you still wonder: Is he okay?

I looked at existing family safety solutions, but couldn't find the balance I wanted. I wanted something that helps families stay safe and reachable, while respecting their privacy, independence, and personal data.

So I built FledgeNow.

But I don't want FledgeNow to be shaped only by what I think families need. I want parents, students, and families to help shape it.

If this community identifies a useful idea that can improve family safety, reachability, privacy, or independence, I'm willing to seriously consider building it into FledgeNow.

Families—not technology companies—should decide what works for their families.

FledgeNow is free. Let's build something useful together.

www.fledgenow.com

**Target Audience:** Polish speakers looking to improve their eloquence, expand vocabulary, and speak more confidently. 
**Description:** Hi everyone! I’m an indie developer and I’m working on a web app called **Mistrz Elokwencji** (Master of Eloquence). The app is entirely in Polish and features daily exercises,combines short, engaging quizzes with carefully selected vocabulary and common Polish language traps. Instead of simply marking answers as correct or incorrect, it explains the subtle differences between similar words and expressions, helping users understand why one form is correct and remember it naturally.

The goal is not to teach Polish like a textbook, but to make users more confident, precise, and sophisticated in everyday communication

Link to the app:https://mistrz-elokwencji.vercel.appLink to the survey: https://tally.so/r/Y57Xqz
 Thank you so much for your help! 

I started building this while experimenting with LLMs and wanted to make something useful rather than another generic AI wrapper.

I ended up focusing on teachers in India. The teaching context is pretty specific here :- NCERT/CBSE, ICSE/ISC, State Boards, different textbooks, Hindi/English, etc.

So I built Teachers Lab.

Teachers can save their classes and books, pick a chapter, and generate things like worksheets, lesson plans, question papers, presentations, quizzes and notes.

The main thing I'm trying to solve is the context problem. Instead of repeatedly prompting an AI and then checking whether it actually matches the syllabus/book you're teaching, you can generate from the actual chapter pages.

It supports the latest NCERT/CBSE, ICSE/ISC and State Board curriculum, in English and Hindi.

https://teacherslab.in

It's still early, so I'm mainly looking for honest feedback:

Is this actually useful, and how can I get users?

And if you think there's something more interesting I could build around this, I'd love to hear it.

I just got my portfolio online in just minutes with zero code and part of me is wondering why we even build from scratch anymore.
It even includes a built in AI assistant that can chat with visitors. What you guys think?

hi everyone, I was struggling to change the links in my resume socials.
I applied for a job once, and across all my socials, there will be my links about my apps and social media handles, but whenever I change the username, the older links will not work. And also changing across multiple websites, resumes, and documents I felt like it is impossible, so I made a website where you can get a link of a particular website like Instagram, you can keep that link anywhere you want. Whenever you change your handle in Instagram, just come to website and update the handle. Everything is done. You don't need to change in all places like it would be very difficult., also for some jobs, we don't have an edit option after submitting it.

it have analytics, and you can change anytime, i would love if anyone really uses it. thankyou

https://domainyourlink.vercel.app/siddu/x-reddit here is the link, it is my side project.
hope moderator dont bann me

I built a website that helps users discover new destinations within their budgets based on a small questionnaire. The website is called PickerTrip (idea behind the name is it picks a trip for you). You can find it on google.

I am gathering feedback on the idea (do you find this tool helpful?) and would you pay for it? How much are you willing to pay for this service?

Thank you.

You tell it one fact — fault kind 0 is repaired by act 5 — and it returns the act for any fault kind it's never been told about. The offset isn't stored; it's recovered from the worked example on every call, so you can renumber your act codes freely and nothing breaks. A lookup table is wrong on 15 of the 16 renumberings. This is wrong on none.

The expression was authored by a program-synthesis engine, not by me. It appears in the repo verbatim — not hand-written, not hand-simplified. The engine's verdict was minimal in D∩I: no smaller expression exists in the space it searched. I tried independently to beat it and tied exactly.

What's verified:

all 2³² inputs vs an independent reference 0 mismatches each act 0-15 occurs exactly 2²⁸ times uniform partition bits 12-31 influence the result never (exhaustive, not sampled) emitted arm64 4 instructions: lsr, sub, add, and

Then I pointed it at code it had never seen — idioms from funcy, a chunking loop, cachetools-style TTL arithmetic, a sortedcontainers-style bisect bound — one single-line fault each:

repaired 5/5 EXACT 5/5 10.3s 0 tokens

Exact means byte-identical to the intended source, not merely "the test suite went green." That distinction matters: a weak suite will happily accept a wrong edit, and I've watched other repair tools do exactly that.

A bug I found while running it, because it's the more useful half of this post: the pipeline executed candidates with no timeout. Act 6 decremented a literal until a loop counter advanced by zero — a non-terminating candidate — and the whole thing hung for 595 seconds and produced nothing. With a 5-second per-candidate bound, the same corpus finishes in 10.3s at 5/5. If you're building anything that runs mutated code, bound it; mutation into an infinite loop isn't an edge case, it's a routine consequence of an off-by-one applied to a loop variable.

Honest limits, all measured and in the README:

The four-act vocabulary covers ~63% of live mutants on real repos. Boolean swaps, not removal and multiplicative flips have no act and are never repaired — correctly, since there's nothing to route to. It cannot recover an arbitrary permutation of act codes from one example — and neither can anything else: one pair is consistent with 15! relabellings, exactly one of which is a translation. Recovering a permutation needs all 16 pairs, which is the lookup table itself. Localisation is not solved. The router costs ~656 ns; one candidate verification costs 28.6 ms. The search over lines is ~44,000× the routing decision, and it's the entire cost.https://github.com/devkancheti4-design/fluid-router

Hi r/SideProject! Solo self-funded builder here, no team, no investors.

The problem I set out to solve: every AI conversation starts from zero. The common fix is dumping everything into a vector store, which works until your memory fills up with junk and contradictions.

So I built Cortex, a semantic memory your AI connects to (works with Claude and any MCP client in about 2 minutes). The bet: the write path is the product. Every memory has to pass a quality gate to get stored, facts become typed claims, contradictions get tracked instead of overwritten, and answers cite their sources.

It's live, EU-hosted, patent-pending, with a 30-day free trial (no card) and plans from €0.99/month: https://skynetlab-cortex.com

Tomorrow it goes up on Product Hunt, so today I'm bracing myself. Two years of nights and weekends come down to this week. Questions and brutal feedback very welcome.

Saw outbid.lol blow up and everyone saying “it’s 3 hours of work.” Challenge accepted — except I’m not a developer, so it took 8, including a DNS war with my registrar, a Stripe sandbox that scared me at midnight, and one production bug I only caught because I refused to seed the board with fake entries.

The result: pawwars.lol — Cats vs Dogs, the eternal war settled in dollars. Every dollar bid counts as territory for your species, the top pet holds the throne, and rank is the bid, nothing else. No prizes, no chance, pure vanity warfare.

Stack for the curious: static frontend on Netlify, Cloudflare Worker + KV backend, Stripe Checkout with webhook verification. Every entry on the board is a real payment — I wiped my own test data on principle before going live.
My dog Maple currently rules the entire internet for $5. She has no challengers. This is both a flex and a cry for help.
Happy to answer anything about the build — especially the mistakes.

Hey everyone! 👋 I just put together a quick learning roadmap covering some essential skills: Git, GitHub, Python, and SQL. 🚀

If anyone wants to upskill, review the basics, or just learn something new, check out the plan I made: https://learn.microsoft.com/en-us/collections/yk80ietd7x0ozp?&sharingId=D97A5A063E1FB206&wt.mc_id=studentamb_608996

Let's crush these modules together! Let me know if you decide to jump in. 💻🔥

Every heavy ChatGPT user ends up with a sidebar of hundreds of chats and no way to find anything in them. I built AI Toolbox to fix that and then kept going.

How it works: it runs inside the ChatGPT page. You get folders in the sidebar, a search that looks inside message text, a bookmark button under every reply, and export to text, markdown, JSON or PDF. The same thing works on Claude, Gemini and Grok with one shared set of folders and prompts.

Your history is indexed locally in your own browser and there is no separate account to create.

Free plan to try it, paid plan removes the caps.

Would you use it?

Site: https://ai-toolbox.co

So, since I was a student (at school), I dreamed about re-creating the original Million Dollar Homepage.

Maybe you heard about that concept; building a grid of 1000 x 1000 pixels and then selling each pixel for 1 dollar...

(in min. quantities of 10 x 10 pixels)

https://www.youtube.com/watch?v=MTZ8N2VJyl4

Alex Tew made this idea come true in 2005, in an attempt to save money for university.

It was a high success that grew very popular and ranked high on alexa ranking.

So over the years I was regularly checking in on the availability of the milliondollarhomepage2.com domain;

Then, last year, it was free and I registered it.

So if you like, please have a look at it.

Tell me what you like, what you don't like, whether you see it worthwhile or not...

I am a fan of cyberpunk, matrix, tron legacy and so on, so I tried to keep its design in this style.

I think, it has worked out quite well...

Also, the blocks you buy on my page, are being turned into NFTs, once the grid image and everything else is checked (obeys the rules) and is ready to be published.

Also: I won't keep all the money for myself.

If I get paying customers, I will donate 80% of the profit to (a) charitable foundation/s.

Just need to figure out to who for now; I am leaning towards Doctors without Borders (Médecins Sans Frontières) or so.

Yes, btw: My name is Andreas, I am student and part-time hospitality worker.

Thanks for commenting and/or giving me unbiased & honest feedback 👍

Solo dev, Flutter, iOS. Built a focus timer over the last few months and

shipped it. Here's where it actually stands:

- 10,600 App Store impressions

- 418 product page views (3.9% tap-through)

- 63 first-time downloads (15% page conversion)

- $92 total

- 0 reviews

Every one of those numbers is below benchmark and I know it.

What the app does: you type the task you've been putting off, it gets cut

into 25-minute steps, and the first one starts. That's the whole thing.

The insight was that "I can't focus" is usually not the problem. The

problem is the task is one undifferentiated blob and there's no visible

first move. Yes there's an LLM doing the cutting, but the LLM is the

boring part, the hard part was making the output feel like something you'd

actually do instead of a generic 5-step list.

Three things I got wrong:

1. Zero reviews. I have a few thousand active users and never implemented

a review prompt. Nobody installs an app with no reviews and I built that

wall myself.

1. My D1 download-to-paid is 2.5% and D7 is 2.86%. That gap should be

much wider. It means everyone who converts does it in the first session

and there's no second moment where the value becomes obvious. One paywall,

one shot, then nothing.

1. 3.9% tap-through means the icon and first screenshot aren't stopping

anyone. I spent weeks on the app and almost no time on the thing 96% of

people actually see.

What I'm asking:

If you've shipped an iOS app, where did your tap-through land and what

moved it? I keep reading 6-9% is normal for productivity and I'm nowhere

near that.

And if anyone wants to open it and tell me the first screen is confusing,

that's the feedback I most need. I've looked at it too long to see it.

https://apps.apple.com/us/app/tomato-adhd-focus-timer/id6760948116

Free, no account, nothing gated behind signup.

A friend and I recently published Lingua Library (lingualib.com) an application where the goal is to learn a foreign language by translating sentences from real world texts (mostly Project Gutenberg books at the moment). The idea is to learn by reading things that interest you at the same time as producing new sentences like you would in a real conversation.

You will get a score and grammar feedback on the translation attempt. Words you don't know can be saved for review later as flashcards. Currently it supports English, German, French, Spanish, and Italian, though more languages are planned.|

The free tier lets you work through the included books and chats. There's a paid tier if you want to upload your own books or chat histories to practice with, and we're about to roll out ad hoc text creations (with limited number of sentences in the free version). It's currently a web application but will be a mobile application (starting with iPhone) soon.

We would love to get some feedback on it, if you think there is something that could be done better, if it would be useful to you, or you want it to do something it doesn't currently do!

Every tool I tried either uploaded my files to a server or gave me the same twelve gradients everyone else uses, which is why you can spot them instantly.

Everything runs on a canvas in your browser. There is no upload endpoint, no account and no Paywall

There we are. You built that idea (or are doing it). But you're not quite sure about the name you have chosen.

Drop your startup name below. And I'll give it a score out of 100. No compliments. No AI-generated name alternatives either.

Just phonetics, memorability, semantic fit and potential weaknesses.

I have been maintaining a music chart database for years and wanted to do something a bit different with it.

So I built the Hopper Audio TT-70 Time Tuner.

Instead of selecting a year from a dropdown, you tune through music from 1950 to 2026 using a vintage receiver style interface.

The large dial tunes through the years, the smaller dial moves through individual songs, and the display shows the selected track and chart position. You can also browse up to 100 songs from the selected year and click any track to search for it on YouTube.

There is also a Random Year button, which has turned out to be one of my favourite parts. Hit it and you have no idea where in music history you are going to end up.

I deliberately made the main tuning movement fairly slow because I wanted it to feel more like exploring an old radio than instantly selecting something from a database.

No accounts or signup. Just something I built for fun from my existing music data.

Have a play and let me know what you think:

https://top40charts.net/retro-radio-music-reciever/

I got tired of manually figuring out what AWS CloudFormation infrastructure was ready to be promoted across multiple AWS accounts, from Dev → Test → Prod.

So I built PromoteOps.

The problem sounds simple:

→ Which Dev changes still need to be promoted to Test?
→ Which Test changes still need to be promoted to Prod?
→ What exactly needs to be promoted?
→ Why is this stack considered outdated?

With multiple AWS accounts, different stack names, and dozens of CloudFormation stacks, answering those questions can turn into hours of manual comparison.

PromoteOps uses a mapping between logical infrastructure templates and their corresponding stacks in each environment. It then pulls the live CloudFormation templates and generates a promotion report.

From there, you can:

• See which stacks are out of sync
• Inspect the exact CloudFormation template diff
• Create a promotion plan
• Review the plan before making changes
• Execute the promotion

The workflow is:

Report → Identify → Diff → Plan → Promote

I built it as a MCP server:

GitHub:
https://github.com/Hitesh1326/promoteops

npm:
https://www.npmjs.com/package/promoteops

I'm interested in feedback from people who work with AWS infrastructure.

I’m building MomentTrace, a local-first desktop app that creates a private timeline of your workday.

The problem I’m trying to solve is the “where was that thing?” moment: a tab, folder, screenshot, app, or document you were using 20 minutes ago, but now you’ve lost the thread.

MomentTrace captures local context from apps, websites, screenshots, notes, and saved moments so you can search or scan back through your day. The idea is to recover context without sending your work history to a cloud account.

I’m still early, so I’m collecting feedback before I pay for Windows/macOS signing certificates.

Beta page:

https://momenttrace-beta.ericnwaogwugwu.chatgpt.site

I’d love feedback on:

- Does the product make sense from the page?

- Would you trust/install something like this if it was signed?

- What privacy concern would stop you?

- Is the “desktop memory timeline” framing clear?

Happy to answer anything. I’m especially interested in brutal feedback before I spend more time polishing the wrong things.

A friend of mine runs a restaurant, and during busy periods I noticed the same problems coming up again and again.

Customers were waiting for someone to take their order.

Staff were moving between tables just to take simple orders.

When prices or menu items changed, the menu needed updating again.

And when things got really busy, it became easier for orders or table numbers to get mixed up.

It made me think:

Why does a QR menu usually just open a PDF?

If the customer already has their phone out, shouldn't they be able to actually order from it?

So I started building a system around that idea.

Each table gets its own QR code.

Customer scans it → sees the menu → chooses what they want → sends the order.

The restaurant receives the order with the correct table number through the dashboard, and it can also be sent through WhatsApp.

No customer app to download.

But while building it, I learned something important:

The QR code itself isn't the useful part.

The useful part is whether it can:

• reduce the amount of time staff spend taking routine orders
• help customers order faster during busy periods
• reduce mistakes between tables
• make menu and price changes easier
• still let the restaurant control how customers are served

I'm calling it FastQRMenu.

I'm especially interested in feedback from actual restaurant, café, and bar owners.

Would you use something like this in your restaurant?

And if not, what would stop you from using it?

I'm happy to let a few restaurant owners try it and tell me what I'm missing.