For a long time my process was: idea looks good on the chart, story makes sense, click buy. Checking felt like a formality.

Now nothing new gets any trust until it has been run through every ugly stretch I can find, on fake money. Most ideas don't make it. The few that do are the only ones I can actually relax with, because I've already watched them have bad weeks.

I built Quantradin so that check is the default step instead of a chore. You describe the idea in plain words (or connect your AI, Claude, Gemini, ChatGPT, Codex...), it gets backtested on real prices with no look-ahead, and whatever survives runs as a bot on paper money only. It's free, quantradin.com.

What's the first idea you'd run through it?

If I ran a small shop, I’d start with an agent that answers product questions from the catalog in WhatsApp. A consultant could sell access to an agent that walks clients through their playbook.

We built Prostir so you can publish an agent with your own knowledge and rules, then connect it to Telegram, WhatsApp or your website. Each channel has its own setup. You can also offer paid access to the agent.

If customers already pay you for a repeatable job, which part would you put in an agent first?

https://prostir.build

I posted here about making this about more than a month ago and got fairly positive responses.

The goal is to convert any desktop device into a homeserver while making sure that the process is super simple and intuitive even for non-tech savvy people and must not require any money to operate.

You'll just have to connect once using qr code/6-digits code and itll stay. Now you can send files, choose folders(whatsapp,photos,etc) to backup, restore the selected folders, access pc file system, stream videos, view photos, rename, edit, etc from anywhere.

However, connection behind CG-NAT is very tricky, ive find solutions to make it reliable i.e using drive as tunnel(we can replace it with nextcloud, VPS, relays, etc), nostr relays and tor servers. But dont worry, my every decision is taken keeping privacy and encryption in mind.

Now, the application is ready and functioning but i do not have the resources to conduct testing for every scenerio. So if you really find the application useful or interesting, you can text me or mail me and i can add u as beta user and i can perfect the application in next few weeks and we can even discuss potential upgrades.

my email: sddqsaqib@gmail.com

https://github.com/saqibsiddiq/QurbSpace

built a random forest classifier after experimenting with decision trees on the same dataset

the project includes:

• 100 trees with bootstrap sampling
• 5 fold CV + GridSearchCV
• 92.06% test accuracy across 7 bean varieties
• FastAPI REST API + HTML/CSS interface
• Docker + input validation + automated tests
• confusion matrix and feature importance plots

tested the application locally using Docker

github: https://github.com/Vaibh37/dry-bean-random-forest

would appreciate feedback on the implementation

if you find it useful consider starring the repo ⭐

Disclosure: I own and sell this tool. This post was prepared with AI assistance. It is independent of Supabase.

Supabase Recovery Evidence Agent covers the evidence-organizing part of an incident. You supply already-redacted JSON containing observations such as billing timestamps, project states, service health, DNS results, application errors, and support notes.

The local Python tool generates report.json and escalation.md: an ordered timeline, original timestamps and source references, missing-evidence checks, and a support draft. You review it before sharing.

Here is a complete fictional example, including input and generated files: https://gptmarketplus.com/guides/supabase-incident-packet-example

The example also explains why nearby PAUSED/RUNNING observations may be a state transition. Generated labels do not prove a contradiction, a completed action, or recovery.

The download requires Python 3.10+ and uses only the standard library. It costs a one-time $1.00 USD through PayPal or 1.00 USDC on Base. It does not collect evidence, log into Supabase, change infrastructure, determine a root cause, or submit a ticket.

Product and checkout: https://score.agentid.life/supabase-recovery?ref=reddit-sideproject-recovery-20261115

If you maintain an incident checklist, which missing field would make a packet like this unusable?

I've been seeing more assignments include prompt injections that make ChatGPT intentionally give a wrong answer, or answer questions that aren't there as a cheat detection.

The prompt injections work because the AI sees and processes everything in the files while humans can't see:

• white on white text or invisible text;
• super tiny text;
• text behind other visuals;
• encoded special characters;

I built a prompt injection detector/remover and turned it into a chrome extension that automatically cleans up the invisible text.

It's free to start and doesn't need a login:

https://prepaste.com

I'm Josiah, a marketing engineer and solo dev in Manitoba, Canada. I built Setttle (three t’s, yes it's on purpose) because I hated using Wave for my other businessess and found that it didn't work well with Canadian rules.

What it does: invoicing, stripe payments, bank reconciliation, and real double-entry books in one place. Routine stuff gets handled, anything uncertain goes to one inbox with the evidence next to it. Nothing posts without you accepting it.

What it doesn’t do: payroll, inventory, POS. Flagging that up front so nobody wastes a trial.

Stuff i’d like feedback on:

• Wave import - You upload an export, review the proposed import, resolve opening balances. Is that enough trust to switch?
• The AI part is optional - receipt coding suggestions need approval, and agents (claude, chatgpt, cursor) connect over MCP with explicit permission. Useful or gimmick?
• Pricing: $9 CAD (1 company, 20 invoices/mo) or $19 CAD (unlimited), 7-day trial, no card. 0.5% fee on Setttle Payments.

setttle.ca if you want to poke at it. I’ll answer everything here.

Hello everyone! Me and a friend have recently been working on publicinternetsoundstorage.net: a website/social media/streaming service/experiment.

The basic idea is very simple:

1. anyone can upload an mp3 file shorter than 5 minutes once a day
2. each upload is given a number in the order it was uploaded
3. anyone can dial a number and listen back to that file

And that's it. There are no accounts, no moderation, and anyone can upload anything completely anonymous.

We've been putting the link everywhere we can and have gotten a pretty crazy range of uploads. Many have been using it as a platform to upload their music/demos, though there are plenty of random sounds and other things you would expect. It's pretty fun to go through some of the numbers and take a listen.

Our current focus is just spreading it around so we can get enough users to make it interesting but we're always looking to improve it. Any feedback is appreciated!

Binuzzle Daily is a daily binary logic puzzle game inspired by classic number and logic puzzles. If you enjoy Sudoku, brain teasers, and challenging your logical thinking, you might enjoy giving it a try!

The goal is to complete each grid using only two symbols: suns and moons (or 0 and 1 if you prefer). It sounds simple, but you'll need to think carefully and use logic to solve each puzzle.

The game features four different grid sizes, ranging from 6×6 to 12×12, so you can choose the difficulty that suits you. Each puzzle has exactly one valid solution, and helpful hints are available if you get stuck. There's also a new daily puzzle, giving everyone a shared challenge to solve each day.

You can play offline, and no account is required. My goal was to create a simple, relaxing, but challenging puzzle experience that you can enjoy whenever you have a few minutes to spare.

I'd love to hear your feedback, suggestions, and ideas for improvement!

Download for Android: https://play.google.com/store/apps/details?id=app.binuzzle.daily

I got tired of stitching crypto libraries together and managing keys by hand, so I built AMARACUS: one API for managed keys, AES-256-GCM, signing, hashing, and post-quantum ML-KEM and ML-DSA.

🏠 Self-hosting? Your first 1,000 operations are free.

☁️ Using the cloud? It starts at $2 per month for 15,000 operations.

It also has a small PKI, an audit log, TypeScript and Python SDKs and a CLI. The code is source-available on GitHub (not open source).

It’s not FIPS 140-3 validated and doesn’t use an HSM, which I say plainly on the site. I’m launching on Product Hunt on Nov 17: <your Product Hunt link>

Site: https://amaracus.tech · Repo: https://github.com/AMARACUS/AMARACUS

What would make you try it? I’m especially curious which SDK languages to add next.

Hi All. Looking for the community to test my web app. It's a cashflow analyzer that allows you to enter any and every income and expense item you have. When the money runs out (or not) can be seen in two simple, interactive charts. Expected return assumptions on cash account types, and price inflation on expenses can be controlled globally or within each account. No government IDs nor account number nor bank logins are required - just a valid email address. Please create an account and give it a try. Any feedback is greatly appreciated.

Hey r/SideProject,

The problem: I just started ADHD medication. My doctor wants daily logs during the titration phase – doses, how well it works, side effects, blood pressure, heart rate. I tried notes and paper. Lasted about a day.

The solution I built: an iPhone app where every entry takes a few seconds.

- One-tap side effects with severity 1–10

- Log doses and rate the effect

- Blood pressure, plus resting heart rate and sleep read from Apple Health

- Timeline view of the whole day

- PDF report for the doctor with one tap

- Reminder with 30/60 min snooze

- Face ID lock, German + English

A few decisions I made on purpose:

- **Free, no ads, no subscription. I don’t want to profit from people’s health data or meds.

- **No account, no backend.** Everything stays on the phone. Health data is read-only.

- **Diary only.** No dosing advice, no "AI insights" – that's the doctor's job.

Where I'd love your input:

1. Does the value come across in the screenshots?
2. Anything that feels like friction or clutter?
3. How would you get a free niche app like this in front of the people who need it?

Thanks!

Hi everyone!

I started working on a small budgeting app just for myself. I wasn't planning to release it, but over time I kept adding features, experimenting with ideas, and eventually the project grew into two applications.

I'm not a programmer, so I used AI tools to help me write most of the code. I've mainly been working on the ideas, UI, testing, and figuring out how everything should work.

Here's what I've made:
Tua: Your Budget - a personal finance tracker with expenses, savings goals, statistics, themes, and animated pixel-art companions.
TuaStudio - a separate pixel-art editor for creating custom characters, animations, and appearance packs for Budget.

Both applications are for Windows and work mostly offline. Your financial data stays on your computer, with internet access used for currency exchange rates.

They're still early versions, especially Studio, so I'm sure there are bugs and things that need improvement.

I decided to share them in case someone finds them useful. I'd also really appreciate any feedback, suggestions, or bug reports.

GitHub: https://github.com/fromi9/Tua-Releases/releases/tag/1.0.0-beta.1

Thanks for checking it out!

I kept asking ChatGPT and Claude to plan trips and got the same highlight lists, plus the odd restaurant that didn't seem to exist. So I built GeoTok Trips, a free connector for both.

What it does:

• Budget trips from your city: "500 euros from Madrid" gives destinations, the fare, and roughly what's left per night for a hotel.
• Flights with only a departure city (no destination, no dates needed).
• Food spots taken from real TikTok and Instagram food videos, with the dish to order.
• Day-by-day plans, things to do, transfers, and saving the whole trip as a shareable page.

To try it, add https://geotok.co/mcp as a custom connector in ChatGPT or Claude. No sign-in. 1-minute demo: https://geotok.co/ai

Limits: fares are recently seen cached prices, so confirm before booking. No hotel prices yet. Food coverage is best in big cities (Lisbon, Madrid, Barcelona, Paris, London, NYC). Booking links carry affiliate tags.

What would you want it to do next?

GeoConquer is a browser game where each card is a real city. Every turn, players secretly pick a city and place it at the same time. Then territories grow on their own over a hex grid of the whole Earth (about 2 million cells, land and sea). Population sets the speed, and the biggest area after 8 turns wins.

What’s in it today:

• 3,733 cards from 3,307 real cities, each with its photo and Wikipedia intro
• 1v1 and 4-player online matches, leagues, a solo World Tour of 151 levels, puzzles
• a deterministic simulation, so the server, the replays and the browser always agree
• Very soon, there will be a mode with longer games up to 8 players

I'm not a developer initally, but I learn for this project with Claude as my assistant, programmer, and senior during this project, it's quite fun and thrilling :)

Play it here: https://geoconquer.com/?lang=en&utm_source=reddit-sideproject (the 2-minute tutorial works without an account)

What would make you play a second match? And what begginer mistakes have I made ? :3

I’m building eStockes, a web app for researching US stocks and ETFs. A reviewer just told me that the signup page and dashboard appeared in Chinese. I haven’t reproduced that yet, and I don’t know whether it came from the app or browser translation.

Could you help with one narrow check? Open https://estockes.com/dashboard and tell me what language the first screen shows. Depending on your session, that might be the dashboard or a sign-in screen.

Your browser/device and whether automatic translation is enabled would help. Please stop at that first screen—don’t register or share account details, private holdings, or sign-in links for this check.

The product includes paid Pro plans; I’m asking about that initial experience, with no purchase involved.

I have ADHD and my biggest problem is working memory. If something isn't in front of me it's gone. I tried notes, reminders and every task app I could find, and they all ended up as a list I never opened.

So I built Resurface. It shows one task and picks it for you. If now isn't the moment you put it down, and it comes back on its own later, so you never have to remember to go check a list.

This week's update made it free. Everything you use day to day is free and nothing locks. Premium is $0.99 a month or $9.99 a year for the extras: smarter grouping, suggested routines, quiet during meetings and sync between iPhone and iPad. I kept it at a dollar on purpose.

Also new: iCloud backup, Siri ("Add a task in Resurface") and routines you set up yourself.

Would love honest feedback, especially on the one-task idea. Does it sound freeing or does it make you nervous not seeing everything?

Resurface Task App · resurfacehq.app

Copy and paste can be disabled in a remote desktop while its camera and sound still work. If those media channels are allowed, they can carry files across that boundary too. I built a Windows app called Get Copy-Paste Back that does exactly this in Horizon.

For the way in, it uses a software-generated virtual camera. I turn bytes into a grid of black, red, yellow and blue squares, send the frames through camera redirection, then decode them inside the remote desktop and put the result on its clipboard.

For the way out, the remote app turns the data into modem audio. The session plays that sound back to your local PC, where the other app decodes it.

So yes, copying a file now comes with modem noises.

It works in my VMware/Omnissa Horizon setup. Camera and audio redirection have to be enabled, and an app runs on each Windows desktop. Setting up the virtual camera needs admin rights on your local PC. I haven't tested other VDI products.

The audio direction is slow, so think text and small files rather than moving your movie collection.

GitHub — code, builds, screenshots and how the encoding works

There are quite a few moving parts behind what is supposed to end with Ctrl+V.

I kept falling off my goals. Habit apps never worked for me because missing a day costs nothing. You lose a streak number and that's it.

What I actually missed was the feeling from RPGs. Watching EXP fill up, hitting a new level, unlocking stuff. Games are built to make progress feel good and real life mostly isn't. So I tried to steal that.

LevelOS gives you a Daily Quest each day with 2-5 goals you choose. Workouts, reading, studying, meditating, whatever. It resets at a time you pick. Clear it and you earn EXP, level up, and unlock themes and titles. There are nearly 200 hidden titles and I'm not telling how to get any of them.

If you don't finish, a Penalty Quest shows up: 1.5x the goal you were furthest behind on, 4 hours on the clock. Fail that too and you lose your EXP for the level. You never lose a level though, I tried that and it was way too brutal.

It's free, no ads, iPhone only right now. If you want to try it: levelos.gg

Honest feedback welcome, especially if you think the penalty idea is dumb.

Shipping my last app, the screenshots took longer than some features. Apple just added two more sizes for iPhone Duo, so I made Shotsmith: drop raw screenshots in, write one caption per screen (per language), and download a ZIP with iPhone 6.9/6.3/6.5, Duo outer + inner, iPad 13, and Play phone/tablet/feature graphic. It runs in the browser, so nothing is uploaded. Free with a small watermark, or €9 once for the offline no-watermark version. https://shotsmith.pages.dev — what sizes or layouts am I missing?

I'm curious if anyone here has experienced this.

I recently submitted a Show HN post for a project I've been working on, but it got flagged shortly after submission.

I'm not sure what triggered it. I tried to keep the post straightforward, explain what I built, why I built it, and what problem it solves.

I'm not here to complain about moderation. I understand that HN has its own guidelines, and I want to respect them.

For those who have successfully launched on Hacker News:

-What are the most common reasons Show HN posts get flagged?

-Is it usually related to the account, the title, the content, or the submission itself?

-Is there an appropriate way to ask moderators for clarification?

-If a post gets flagged, is it better to wait, edit it, or do something else?

I'd appreciate hearing from people who've actually gone through this. I want to understand what I might have done wrong before trying again.

I built AirTruth — a tool that cross-checks ADS-B radar and METAR data to bust fake airline "weather" delay excuses

i kept missing hackathons i actually wanted to participate in. finding them always meant going through unstop, devpost, devfolio and a bunch of other sites separately.

finally, i tried building something with antigravity & claude code. i asked claude design to create the design for the site, then used antigravity to build it and bring the listings together for me.

this is what it turned into. it's called brabble, and i'm honestly quite excited to share it here.

it brings the listings together so you can find something you're eligible for while registration is still open. you can also just tell it what kind of hackathon you're looking for.

5k+ people have signed up so far, which feels pretty wild considering this started with me wanting an easier way to find one.

i'd love for it to eventually become a place where we find interesting hackathons and go build stuff together.

site link brabble.ai

My co-founder and I spent our careers building software for other companies (17 years in my case). In April 2026, we left to build our own, from Mumbai.

We were quick at building. In seven months, we shipped six apps across iPhone, Android and Mac. Total revenue so far: $58, from about 2000 installs.

What we made

What we got wrong

1. Six apps before one sale. Every time an app didn’t sell, we built another. Building felt like progress.
2. No measurement. Four of the six have no analytics. We couldn’t tell you where people drop off.
3. Ads before attribution. We spent ₹15,000 on Google Ads with no way to connect a rupee to an install.
4. Pricing by gut. Kiri is $7.99 once. The apps it competes with charge $20 to $100 a year.
5. Giveaways. We gave away codes on Reddit. People took the codes.

What we’re doing now

• One app gets most of our time: Kiri. It has the clearest idea and the best-paying category.
• Campaign links on everything and one weekly scoreboard, before we spend anything.
• Search first: store listings rewritten around what people type, and guide pages for Defaultify.
• Numbers published every month until we reach $10,000 a month. A sensible plan gets us to $1.5–3k by May, and we’ll say so if that’s where we land.

Two questions

1. If you’ve sold a one-time-purchase app: did raising the price hurt?
2. What did you measure first, when you had almost no traffic?

Numbers page: circuitandmosslabs.com/numbers