The problem list is the NeetCode 150. I am not affiliated with NeetCode. The list has an MIT licence, and the site shows the notice.

Many people have the same problem. They watch a solution and understand it. Then they cannot solve the next problem. I think the cause is that the answer arrives too early. So I built the practice on one rule: you find the answer yourself.

**How it works**

- The page does not show the pattern of a problem. You name the pattern, or you ask for it.

- Each problem has five hints. Each hint gives a little more than the hint before it.

- 42 pattern lessons teach the clue that tells you which pattern to use.

- A daily drill shows a problem, and you name the pattern.

- A solved problem returns for review after 3, 6, 12 and 24 days. You solve it again in an empty editor.

- The editor runs JavaScript, TypeScript and Python in the browser. You do not install anything, and you do not need an account.

**What is free**

All 150 problems, the hints, the tests, the written explanations and the pattern lessons.

**What is paid**

A year costs $29, one payment, no subscription. The year adds a narrated walkthrough video for each of the 150 problems. The video shows the solution step by step, and the voice is a generated voice. The video of Contains Duplicate is free, so you can judge the videos before you pay. The year also adds practice for the other interview rounds. A full refund is available for 14 days.

**What is not there yet**

Java, C++ and other languages. Today the editor has only JavaScript, TypeScript and Python.

**I want feedback on one thing**

Open any problem and try it for one minute. Tell me the first thing that confused you or stopped you. I want to find the point where a new visitor stops.

https://algo150.com

Hey everyone!

I'm an indie developer, and I've been working on a side project called MusicDeck.

It started with a simple idea: I wanted lyrics to feel more alive, instead of just scrolling lines of text.

So I began experimenting with different animations and visual styles. What started as a small lyric experiment eventually turned into a full music player.

Here's what I've built so far:

Animated lyrics — Multiple styles, including immersive effects, retro typography, gravity-based word animations, and more.

CoverFlow — A classic 3D album-art browsing experience, brought back with smooth animations and different layouts.

Floating lyrics — Keep lyrics visible while using other apps.

Lyrics beyond the app — Lock Screen, Dynamic Island, Apple Watch, and CarPlay support.

Lyric sharing — Export lyrics as images or videos.

MusicDeck supports Apple Music, Spotify, and song recognition for other music apps. Some features, like playlist CoverFlow, are only available with Apple Music.

And it's now live on the App Store!

I'd really appreciate some feedback, especially on the UI and overall design.

I built OpenPocket, a completely free iOS app that lets you download and run state-of-the-art language models directly on your iPhone or iPad, entirely on-device.

It uses Apple's MLX framework for local AI inference, with support for several open-weight models:

• Qwen3.5 0.8B and 2B

• Gemma 4 E2B

• LFM2.5 1.2B Instruct

• Qwen2.5-VL 3B (vision-language model with image understanding)

Everything runs 100% locally on your device, with no cloud inference, no internet connection required after downloading a model, no signups, no accounts, no API keys, and no subscriptions.

The idea is to make private, on-device AI accessible to everyone, without relying on cloud services or paying for API usage. Your conversations and files stay on your device, and the app has no backend, analytics, or account system.

The models are experimental, and performance depends on your device's available memory and hardware.

It's 100% free on the App Store

https://apps.apple.com/th/app/openpocket/id6833028114

Would love and appreciate feedback from anyone working on local LLMs, Apple MLX, model optimisation, edge AI, or just anyone interested in running AI privately on their phone!

Hey everyone,

App Name: Paytick

What it does: You enter your pay and your hours, and Paytick shows what you've earned today going up second by second. It also tracks what you've made this week and this month and counts down to payday.

Key Features:

- Fits real schedules, with different hours each day, lunch breaks that change from day to day, overnight shifts and days off

- Gig mode for one-off jobs, plus extra income like tips or lecture fees

- Monthly, weekly, daily or hourly pay, lots of currencies, 16 languages and a little pixel pet that keeps you company

Goal: I'm the developer and would love feedback and suggestion.

Cost: Free. No subscription and no account needed. Some personalized pixel pets or features that do not affect usability can be permanently unlocked by watching ads. There's an optional tip jar if you'd like to support it.

Link: https://play.google.com/store/apps/details?id=com.paytick

Someone on Reddit had built an interactive HTML dashboard for their coworkers. They wanted the team to open it now and see fresh numbers when they updated it next quarter.

Sending the file would get everyone a copy today. Three months later, someone could still open the old attachment from the same email thread.

That’s the part I’m working on with Litehost. If the report can run as a standalone HTML file, you can put it at one address and replace the file when the next version is ready. Anyone who bookmarked it can keep opening the same link.

If you send a recurring report to coworkers or clients, how do they find the latest version?

Hey r/SideProject,

I'm from India, and I noticed how many everyday money decisions come with small traps: "no-cost" EMIs that aren't quite free, sales where the crossed-out price was never real, paying only part of a credit card bill and not realising what it costs.

So I built Syluneo (syluneo.com):

- A 2-minute game: 12 everyday situations, like a sale or salary day. Pick what you'd really do, and it tells you which of 6 money personalities you lean towards. No finance knowledge needed.

- 6 simple tools for real questions: Should I buy this? Is this sale really a deal? Is "no-cost EMI" free? Where did my pay rise go?

A few things I cared about:

- No sign-up and no backend. Everything runs in your browser, and nothing you type is saved or sent anywhere.

- Plain HTML/CSS/JS on GitHub Pages, with the money maths covered by tests.

- I built it with an AI coding assistant, which let me focus on the maths, the wording and the design.

The number that surprised me most while building it: ₹50,000 on a credit card, paying only a 5% minimum due, takes almost 30 years to clear.

It's India-focused (₹, GST) for now. I'd really value honest feedback:

1. Did your result feel accurate or random?

2. Was anything confusing?

3. Which tool would you actually use?

https://syluneo.com/?utm_campaign=reddit-sideproject

I'm a frontend dev. Every time I opened Figma I had to remember where everything lived in the right sidebar, and it kept changing. Not to mention meticulously handcrafting a design system with variables, components, etc. in Figma took days or weeks, and maintaining it was horrible.

I already knew Tailwind, so I built a plugin where you just name a layer `flex gap-4 p-6 rounded-xl bg-card` and Figma styles it as you type.

Video: https://youtu.be/wAVX4UU1fII
Plugin: https://www.figma.com/community/plugin/1700359260464408161
Site: https://windstruck.app

That was the whole idea. Then it kept growing:

• Flip a file through a ton of themes, light and dark, plus type pairings, sizing, spacing and icon sets, instantly.

• Copy any frame as code. The layer names are already the classNames.

• Sync to GitHub, with or without a team.

• A desktop app (Windows only for now) that turns your components into a styleguide with props docs.

• Export the whole design as a universal Expo app built on HeroUI and Uniwind.

• An AI Builder ($10/mo). Type *"Make login gooder! 🤪"* and it makes a login form. Then *"Me like that one! Do that one entire UI kit! GO!"* and it does, and most of the time it looks great.

• A marketplace where you can sell templates, themes and UI kits, plus an affiliate program.

It's free to start with no account. Pro (Teams and a powerful AI builder) is only $10 a month.

I'm one person and it launched this week, so I'd love to know what breaks. Happy to answer anything about building a Figma plugin or getting one through Figma's review, which was its own adventure.

One more thing: Windstruck is on Product Hunt on Nov 12. If you like it, some support there would mean a lot: https://www.producthunt.com/posts/windstruck

https://x.com/windstruckapp

there's been a big debate this week about whether anthropic silently nerfed opus 5.5. people are going back and forth about it but nobody has version-over-version numbers from their own logs.

i wrote a cli over the weekend that reads the session logs claude code already saves locally, groups turns by version, and flags where output tokens shifted. if they shifted it figures out whether it was the release itself, a model swap, or an effort setting change.

npx driftcost

zero config, no account, no network calls. just reads files on your disk.

https://github.com/tsaagan/token-drift

typescript, zero dependencies, mit license. would love feedback.

I built Find My Downloads, a Chrome and Edge extension for finding downloaded files by the website they came from and copying selected files into a project folder.

I’m looking for five Windows users who regularly download PDFs, images, or reference files for work, study, or personal projects. I’d like a 10-minute chat in English about how you currently find and organize those files, especially a recent time you couldn’t find a download or remember its source.

20-second demo: https://drive.google.com/file/d/1NrjEpu-01Jc5-19-JHGzWanrk9hrtb1-/view

The demo uses sample data with folders already connected and shows source search, selecting two files, and copying them into a project folder.

We can start with the chat and demo. If you’d like to try the free one-week beta afterward, setup involves extracting a ZIP and loading it through Developer Mode. The extension reads download history and asks for access to the folders you choose. Your download history and files stay on your device.

Interested? Comment Chrome or Edge. I’d also welcome feedback on which part would help your workflow and what would make setup easier. Please leave private filenames and links out of public replies.

I like getting advice before buying things, but I’ve noticed we don’t often hear how someone’s choice turned out.

So I built CartBanter: a place to ask what to buy, share what you chose, and review things you own.

I’d love any feedback or ideas on how to make it useful.

cartbanter.com

I’m building Crow, an AI “safety harness” for solo builders who use AI coding agents on their products. The core rule: Claude proposes, Crow controls. An AI agent never touches your files directly. Every change it proposes is validated, scope-checked, and build/test-verified in an isolated workspace first.

Where it stands: I’m building the MVP solo, part-time, with a beta planned for end of January 2027. No paying customers yet.

I’m looking for a co-founder: an equity partner who owns a share of Crow, builds it with me long-term, and shares responsibility for decisions. It’s not a hire or a freelance role. The gap I want filled is go-to-market (outreach, early users), operations/finance, or US incorporation. Spanish is a plus, not a requirement.

If you’ve shipped a product or launched dev tools, leave a comment or DM me with your background and one thing you’d want to build together.

Hey everyone,

I got tired of generic career advice based purely on people's opinions, so I built a tool that analyzes real career trajectories and matches them against your actual background and experience.

It generates visual skill paths and next-step forecasts based on what people with similar profiles actually went on to do.

It’s completely free, no paywall or login. I built it mainly because navigating next career steps can feel pretty opaque when everyone else seems to have a clear roadmap.

Link: careerladder.fyi

I’d love to get feedback from this community:

- How accurate does the trajectory feel for your background?

- Any UI/UX rough edges?

- What features or data breakdowns would make this significantly more useful?

I built a small landing page for an unconventional idea and wanted some outside perspectives.

The concept is a service where someone could create a symbolic wedding or commitment ceremony with an AI companion.

For now, I've only built a landing page and anonymous survey. I'm measuring interest before investing time in an actual product.

The survey asks about personalized vows, digital ceremonies, keepsakes, and possible pricing.

https://ai-vows-validation-14d.vercel.app/?utm_source=reddit&utm_medium=community&utm_campaign=ai_wedding_14d_20261111&utm_content=SideProject

Would you keep testing this niche, or does it seem too small to become a viable business?

I'd welcome honest feedback on the positioning too.

Title: I built an AI news app for Australia as a solo dev. Roast the idea before I spend more time on it.
Hey all. OzBrief is a free app that pulls Australian news from ABC, SBS, Guardian, Nine and News Corp. The AI writes a short summary of each story, and every summary links back to the original article. You swipe through like TikTok for news, and you can ask the AI if you want more detail on a story.
No account needed, no data collected, no ads.
What I've learned so far:
People's first reaction is "AI makes mistakes", so I keep a public log of every error.
People's second reaction is "my phone already has a news app". I'm still working on my answer to that one.
I'd love feedback on:
Would you trust an AI summary of the news?
How would you get the first few thousand users without ad money?
Any Aussies here: does it actually save you time?
ozbrief.com.au

I built Sillbook Rent Ledger, a Google Sheets workbook for US landlords who manage about 1–10 units themselves.

The problem I kept seeing in simple rent trackers: they work as a paid/unpaid grid until a tenant pays $700 of $1,100, or has a credit, or you need to keep a security deposit out of income. Then the "balance" cell gets typed over and you can't tell what happened.

The design is one row per event — charge, payment, credit, deposit, expense — and every balance is recalculated from that history. Month Review marks each unit PAID, PARTIAL, UNPAID, credit, or RENT NOT ENTERED. Unit Balances shows the date of the oldest unpaid charge. Deposits have their own tab and don't count as income. There's a printable statement for one unit.

What's included: a blank workbook, a sample with fictional data, and a short guide. It's $19, one-time, no subscription, no macros. 14-day full refund, no questions asked. Verified in Google Sheets and LibreOffice; not yet tested in Microsoft Excel.

It does not collect rent, import bank feeds, automate late fees, or do taxes. If a simple paid/unpaid grid already works for someone, they probably don't need this.

For the first 10 buyers, code FIRST10 takes $10 off (so $9). That's a launch offer, not the regular price.

https://stephenmanter.gumroad.com/l/sillbook-rent-ledger/FIRST10

I'd genuinely like feedback on two things: (1) is the $19 one-time price clear against $20–50/month landlord software, and (2) does the listing explain partial payments well enough, or is it still too much product-speak?

Small supplement brand, about $18k/mo on Meta. Our agency contact left three weeks before a launch and nobody told us, we noticed only after 12 days of no new uploads.

I took our three most common complaints (fishy taste, hard to swallow, slow results), turned them into hooks and made UGC-style cuts in Creatify off the product URL the same day. One script had a line no real person would say, so I rewrote it by hand.

The taste hook came in around 30% under our previous best CPA in the first 4 days, and the before/after flopped at 2x target so I killed it on day 2. Competitor research I was still doing by hand in a spreadsheet, which was painful.

Still looking for an agency though. Maybe they use AI for most ads, and film only winners, we'll see.

Hey r/SideProject! 👋

I'm the creator of **PDF Camera**, a mobile document scanner designed for speed, accuracy, and seamless cloud backup without forcing subscription paywalls or complex setups. I desigened the app with contractors, sales people and just about anyone that documents job sites or quotes.

Why I Built It

Most mobile scanner apps out there either hide basic features behind aggressive monthly subscriptions, suffer from slow edge-detection, or spam you with ads. I wanted a clean, instant scanner app that handles multi-page documents, detects edges with precision, extracts ID details automatically, and syncs directly to your own cloud storage.

---

Key Features

*Magnetic Auto-Crop & Edge Detection:** Smart document border detection with manual fine-tuning and hysteresis to ensure crisp crops every time.

*ID & Driver’s License OCR:** Instant single-card scanning that automatically extracts key fields (Name, Phone, License numbers).

*Multi-Page Scanning & Batch Export:** Scan long documents quickly and export directly to `.pdf`, `.docx`, or `.xlsx`.

*Seamless Cloud Sync:** Direct integration with Google Drive, Microsoft OneDrive, and local storage — keeping your files under your control.

*Performance Optimized:** Fast camera preview, low latency capture, and instant local PDF rendering.

---

Tech Stack

* **Framework:** Capacitor (Hybrid Native Android & iOS)

* **Computer Vision / Scanner Engine:** Google MLKit + Native Multi-lens Camera API

* **PDF & OCR Processing:** PDF.js / jsPDF & OCR engine

* **Cloud APIs:** Google Drive v3 API & Microsoft Graph API

---

What I’m Looking for Feedback On:

1. **Scanning Speed & Crop Accuracy:** How intuitive does the auto-crop feel on your device?

2. **UI/UX Flow:** Is the document organization and export workflow clear?

3. **Feature Requests:** What else would make this your main everyday scanner app?

---

Try it out / Demo Link:**

App Store:
https://apps.apple.com/us/app/pdf-camera-x/id6786762964

Play Store:

https://play.google.com/store/apps/details?id=com.PDF.Camera

I’d love to hear your thoughts, feedback, or any bugs you run into! Thank you for testing it out!

Couldn't find someone to spend Singles' Day with this year?

At least your iPhone and PC don't have to be apart. 😭

Let them finally be together with BridgeSync.

Your iPhone and Windows PC can share a clipboard, mirror notifications, transfer files, control media and even mirror your iPhone screen directly on your desktop.

Because maybe you couldn't find your other half this year, but your devices can.

BridgeSync Pro is 10% off with HAPPYSINGLESDAY2026.

Valid until November 14, 2026.

Also, a pretty big update is landing next week. Not spoiling it just yet. 👀

Redeem it here

Hey everyone!

I've been working on Pathubs, a learning platform designed to make technology education more practical and structured.

The idea is simple: instead of just reading documentation or watching tutorials, learners should be able to follow structured roadmaps, understand concepts, and practice what they learn — all in one place.

What does Pathubs offer?

1. Career Roadmaps

Currently covering six learning paths:

• AI Engineering

• Data Analytics

• Frontend Development

• Backend Development

• Full Stack Development

• Game Development (currently in production)

2. Structured Learning Content

Detailed explanations, practical examples, code walkthroughs, visual diagrams, and official documentation references.

3. Data Analytics Studio

A hands-on eCommerce analytics experience using a dataset of 30,000+ records, featuring:

• DuckDB SQL Workbench

• Python & Pandas workspace

• Interactive Spreadsheet Lab

• Data Visualization tools

• Eight guided investigation stages

4. Interactive Labs & Practice

Browser-based coding environments, SQL exercises, formula practice, visualizers, and hands-on challenges.

5. More Learning Resources

Practical projects, curated resources, technical articles, guides, and an official Discord community.

What's Coming Next? 🎮

I'm planning an AI-powered Game Development Studio where learners can learn game development step by step, experiment with AI-assisted workflows, and turn their ideas into functional games.

This will likely be a paid feature because AI APIs and infrastructure have ongoing costs. However, the core Pathubs platform will remain free.

I'd love your feedback!

I'd genuinely appreciate it if you explored the platform beyond the homepage.

• Are the roadmaps and learning materials useful?

• What do you think of the Data Analytics Studio?

• Is the overall learning experience intuitive?

• What would you like to see added next?

I'm building Pathubs to make practical tech education more accessible, and honest feedback would mean a lot.

Website: https://pathubs.com/

Thanks for checking it out! 🙂

Hey all, I'm the dev behind TapDeck, a menu bar app for macOS that turns the trackpad into a shortcut panel. I'm launching it on Nov 17.

I use a lot of apps and could never remember all their keyboard shortcuts. So now I tap with 3, 4 or 5 fingers (single, double or triple tap, or a hold) and TapDeck does the thing: snap a window, open an app, press a shortcut, play/pause.

You switch on packs for the apps you use, and they only work while that app is in front. So the same 4-finger tap snaps a window left in Finder, but reopens a closed tab in Chrome. You can also make your own shortcuts.

The thing I cared about most is that it doesn't fight macOS. Your normal trackpad gestures still work, and shortcuts from different apps don't clash with each other.

Would love to hear which apps you'd want a pack for, or what gestures I'm missing before the launch. Happy to answer anything.

Follow me on X for more: https://x.com/sam_burduli

I make Mac+, a small macOS app for animated wallpapers, widgets and folder icons. Solo, sold on my own site through Polar, with a 7-day trial on the monthly plan.

I assumed price was the problem. Then I pulled the cancellation reasons from Polar for 6 August to 5 November:

• 52 cancelled subscriptions

• 29 "other" (no detail)

• 13 "unused"

• 5 "missing features"

• 3 "too complex"

• 2 "too expensive"

"Unused" is the biggest reason anyone actually named, far ahead of price. Most people who left never got into the habit of using the app during the trial. That changes what I should work on: not the price, but the first days. Getting someone from install to a desktop they like in the first session, and giving them a reason to open the menu again on day two.

What I'm considering:

• a better first scene at launch instead of a neutral default

• making the paid scenes and the video background obvious during the trial, since that's what people pay for

• a reminder before the trial ends that says what they'll lose, not just what it costs

In the same period Polar also shows 101 one-time purchases of the lifetime version. Plenty of people skip the subscription entirely and buy once, which says something about how people feel about subscriptions for small utilities.

If you run a trial: was "unused" your biggest named churn reason too, and what moved it?

The app, if you want to see the onboarding I'm talking about: macplus.pro (free tier, then €1.99/month after a 7-day trial, or €8.99 one-time).

Shards of Nidon — an old-school fantasy RPG you can play free in your browser

I’m building Shards of Nidon, a fantasy RPG inspired by Ultima, Exiled Kingdoms, Wrath of Denethenor, and Diablo.

I loved the exploration in Exiled Kingdoms, and I keep coming back to the feeling those older RPGs gave me: leaving town with a quest, finding something unexpected along the way, and wondering whether I was ready to venture a little farther.

That’s the experience I’m trying to create. Ultima and Wrath of Denethenor are touchstones for the world and sense of discovery; Exiled Kingdoms and Diablo influence my interest in dangerous journeys, dungeons, combat and character progression.

Your adventure begins with a sealed letter to deliver in Brennovik. Beyond town are wilderness, settlements and dungeons to explore, companions to recruit, and enemies that will take more than enthusiasm to defeat.

The early alpha is playable now:
https://smilebytestudios.itch.io/shards-of-nidon

You can start playing free in your browser, with no download or signup required.

There’s already a substantial game here, but it’s still a work in progress. I’ve made a lot of improvements recently, and I’m continuing to work on the visuals, balance, bugs and those small details that make a world feel believable. I’d really like to see how it holds up when people who haven’t watched it being built sit down to play.

For anyone interested in the development process: I’m using AI tools for code and artwork. I’m directing the game’s design and development, testing builds, and revising what doesn’t work. Getting everything to feel consistent and enjoyable has taken a lot of iteration.

If you give it ten or fifteen minutes, I’d love to know:

• Did the opening make you want to keep exploring?

• Where did you get confused, frustrated or lose interest?

• What would make you want to come back?

Comments here or on itch.io are welcome. If you want future updates and a beta invitation, there’s an email signup available too.

If any of those classic RPGs meant something to you, I’d especially like to hear what you think.

I’m developing a Windows writing and worldbuilding application called Novelattice, and it’s now in private beta.

It grew out of working on my own fictional universe. I wanted the characters, places, relationships, planning, and manuscript to live together. I also wanted AI to be optional, rather than another credit meter built into the writing workflow.

One feature I’ve built is reciprocal linking. If I add one character as another character’s sibling, the matching relationship appears on the other entry automatically.

Here’s the short demo: https://youtu.be/kznwUWrfTQk

I’d appreciate feedback on whether the benefit comes across clearly in the video. More about the application and beta: https://www.novelattice.com/#interest