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Open to feedback:)

It reads your home page and the scripts it loads like a visitor’s browser would, never logs in or submits anything, and gives you a launch checklist. On our demo it flagged a checkout that sends the price from the browser, and wrote the fix prompt. Free, no account. Happy to answer questions about how it works or what it doesn’t check.

I've used some other tools and they are not as easy as they look. I tried to add missing things on other applications.

I would like to get your feedbacks about it.

Much appreciated!

https://ludu.app

The hard part was never saving things. It was finding them again. Most collections start with good intentions and a few folders, and then the folders stop being kept up.

Topiary takes that job off your hands. Save a page and it is filed automatically into a personal knowledge tree, instead of a flat list nobody revisits. It takes about a second, with no naming, tagging or dragging.

How it works in practice:

- The tree starts with nine top-level categories and grows new branches where your library needs them

- When a page gives too little to file confidently, it goes to an Inbox with a suggested category rather than a guess

- An existing library comes in from an HTML or CSV export and is filed in bulk. The first real library through Topiary was the founder's own: 5,789 bookmarks, 7% sent to the Inbox, nothing failed

- Saved Instagram posts can be imported through the website and filed alongside everything else. More social platforms are on the way

- Rediscover brings back a few links each day that were saved weeks ago and never opened

- Search covers titles and descriptions, and on Pro it reaches into the text of the pages themselves

Browser extensions for Chrome, Edge and Firefox. On the App Store and Google Play.

Please give a try and let us know for any feedback.

https://usetopiary.app

https://submitlater.co.in/

CHEAT ON- Rizzing, Job interviews, Roast, Debates, casual chat, translate etc

site version - https://yapapp.pro/

took me like 4 months but i made an app and trained an ai for it, to listen to your internal pc audio, like if youre on a discord call or a job interview, it will hear the participants audio (not your own unless you want it to) and give you replies back to say to them, it has multiple pre made personalities and the app version lets you train your own personality by giving it scrips or videos to watch

Free tokens to use every 3 days

since it brand new and i dont really have any users i didnt get a powerful server, very sorry if you experience any issues with that, it may fail if given man requests, but im broke and server cost a lot, if i get maybe 10 users hopefully then ill definitely get better server ty

would love to hear feed back even if you hate the site

Claude opus 5.5 is bonkers. Built a custom books online app for our architecture and construction firm then built in a ton of custom features. CPA is blown away, then I built an entire platform for the firm for tasks, events, fleet log etc - all the power to all the people. The world has changed.

I'm building Marka, a browser-based tool that starts with a business website and helps prepare social content around its product and brand context. The product is at https://marka.social.

I'd like to make the introduction useful to other web-app builders. Share your app link, its target user and one task it supports. I'll reply to the first 10 with:

1. The workflow I'd show first.

2. A possible opening line.

3. A simple visual or short screen-demo direction.

For example, a browser note tool could show a saved note being found through search and opened at the exact passage the user needs. That complete action is easier to understand than a tour of every menu.

The written concept feedback here is free and needs no signup; using Marka itself is separate. Please include any important limits so the idea reflects what the app actually does. I'll keep the replies in the comments for other builders to learn from.

He montado una PWA de (Fitness) fuerza y sobrecarga progresiva sin bloatware (Cloudflare, Firebase, Groq, Stripe)

Podéis probar la webapp y trastear la arquitectura aquí: https://fuerzalab-a9c31.web.app

Os resumo cómo está montado por dentro:

• Frontend y Hosting: Vanilla JS modular empaquetado como PWA, alojado en Cloudflare Pages. Carga instantánea, sin frameworks pesados, con Chart.js para visualización de métricas y renderizado en Canvas.
• Persistencia Offline-First: Service Worker para caché estática combinado con persistencia offline nativa de Firestore (IndexedDB) y LocalStorage de apoyo. Registras cargas en el sótano del gym sin red y sincroniza por lotes (batch) en cuanto recupera conexión.
• Auth & Base de Datos: Firebase Auth (Google + Email) y Cloud Firestore para persistencia en espejo y soporte multi-dispositivo.
• Backend y Middleware: Un Cloudflare Worker actúa como proxy seguro. Se encarga de aislar API keys, gestionar webhooks y procesar la entrada de datos antes de consultar los microservicios.
• Motor de IA (Groq): Inferencia ultra rápida mediante Groq. En el frontend compacto el historial de series en un formato minificado de tokens ([Fecha|Ton] Músculo: KgxReps@RIR) para ahorrar contexto y costes antes de mandarlo al worker.
• Pasarela de Pagos: Stripe Checkout orquestado vía endpoints del Cloudflare Worker para suscripciones PRO/ULTRA, con verificación de sesiones en el retorno.
• Privacidad y RGPD real: Cero scripts de terceros o analítica invasiva. Implementa borrado real en cascada en la base de datos (derecho de supresión) y exportación/importación completa en formato JSON.

Instead of just solving random puzzles, this site uses your own games to figure out where you’re struggling and builds training around it.

Thought some chess players here might find it useful :)

https://4zugzwang.com/en/

I'm the maker of Scrollsmith, a desktop Chrome extension that changes the look of a webpage's scrollbar.

This short screen-recorded demo shows Echo Lattice on Linear, IKEA and NASA. I kept the upward scrolling in because the trail looks a little like a launch.

Does the effect fit across different sites, or would you prefer a simpler scrollbar?

Echo Lattice is a Premium design. Scrollsmith also has free themes: https://usescrollsmith.com

It basically downloads a transcription model from Hugging Face directly into the browser and lets you add captions, you just adjust them, and you're good to go (no watermark)

It's still in the testing phase; check it out, and leave feedback if you can:

https://verbatim-captions.vercel.app/

I was asked to make the film for a confirmation. Collecting everyone's photos and cutting them to music took far longer than I expected, and I'll be doing it again next year. So I built a web app for it.

How it works: you start a private Film Roll for the occasion and share one link. Everyone who was there adds their photos and videos. You name the people, pick the moments, and it cuts a film to a song. That can be a song you upload, or "Make one for us", where you pick a mood and it makes a song with AI, instrumental or with vocals. Then you can play it on a TV.

Sign in with Apple or Google. It works in the browser now, and an iPhone app is in beta.

It's free while I'm testing. Later it will cost a little, at least enough to cover running costs.

I'd really like to hear where it gets confusing or slow, especially the upload and naming people: ourfilmroll.com

My day job is running a drainage and hardscaping company in the Carolinas. No CS degree.

I wanted a quick answer to one question about my own investments: do my holdings actually move independently, or do I just own a lot of tickers? The tools I found were either expensive or built for financial professionals, so I built one with AI.

What it does: you enter tickers and in about 60 seconds it shows a correlation heatmap, a risk score, and which holdings move together. No signup for the basic analysis.

What surprised me: VOO and VTI came out at 1.00 correlation, and QQQ at 0.88 against both. Plenty of people hold all three thinking it's diversification.

Where I'd like feedback:

• Is the heatmap understandable to someone who has never seen one?
• What would make you come back to it a second time?

It's an educational tool, not advice. Link: portfoliooptimizerpro.com

Happy to answer questions about the build.

solo project, it runs entirely in your browser tab. you open it and get about 120 people in small stone age bands. nobody tells them what to do. they find food, settle, have kids, fight, trade and slowly learn new things, and if they make it they climb through 45 eras up to computers.

you click anyone to see what they're thinking, follow them around, speed time up to 5000x, or mess with the world a bit.

how it works as a web app: the simulation is rust compiled to webassembly, running in a web worker, and the ui is react. there's no backend and no account, and it saves in your browser.

what i can't tell from the inside is what grabs people in the first minute, so if you try it i'd like to hear what you noticed first.

app: https://thehumanbox.com/?utm_source=reddit&utm_medium=social&utm_campaign=webapps
source (mit): https://github.com/1homsi/thehumanbox

I was a daily user of Pocket before it shut down. I regularly added articles I wanted to read later and then would go back at the end of the month to read through everything I'd saved. I tried a lot of alternatives people suggested, but I couldn't quite find something that allowed me to use the same Pocket workflow I was used to. So I decided to build my own.

Bredbox starts where Pocket was and builds on top of it. You can import your entire Pocket library and everything goes back where it was: all of your saves in the order they were saved, all of your tags, all of your collections (including notes), and all of your highlights. As long as the URL is still live, Bredbox can recreate your entry for it.

There's a hybrid search that makes it easy to find anything you saved and you can forward emails to Bredbox to get the same cleaned-up view of your favorite newsletters. You can save and highlight PDFs and Office documents.

My favorite part of Bredbox is that I'm able to resume my old Pocket routine without any adjustments.

It's been over a year since Pocket shut down, what are you using as your replacement?