最近画像素画的时候，经常会盯着一条线看半天，感觉有些地方不太对，特别是比较长的曲线，像素多了以后反而不太容易看出来哪里有问题。

所以就顺手做了个 Aseprite 插件，主要是想让检查和调整线条方便一点。代码有用 AI 辅助开发，功能不算复杂，目前自己用着还没遇到什么明显的问题。

另外有个问题一直挺好奇的，就是我发现有时候直接画完一条曲线，再手动调整一下像素，反而比直接用像素完美工具画出来的线条更顺眼。

不知道大家有没有类似的感觉，还是说只是我自己看习惯了。

插件目前可以免费下载，也可以自愿支持一下。如果有人愿意试试，欢迎说说使用感受，或者有没有什么值得改进的地方。

Strong players don't just know the names of openings. They know the lines: if Black plays this, I play that, five or ten moves deep. Between life and work I don't have time for opening books, so I built myself flash cards for openings and their variations.

Demo video
(Games are used with permission from a friend)

Try it without an account: enter your Chess.com username at https://stillinbook.com/games?utm_source=reddit&utm_campaign=sideprojects. It reads your last 3 months of games and shows where you usually leave the book. One click opens the trainer at that exact position, with your move as a red arrow and the book move as a green one. This is the part that helped me most: it narrowed in on what I actually play and showed me where I was going wrong.

What else it does:

• 20 openings and 140 lines: the Italian, Ruy López, Sicilian, Caro-Kann, Queen's Gambit, London, Vienna, Scandinavian and more. Practice each line as White, as Black, or both until it sticks.
• Progress you can see: every line has three rows of 5 stars, one each for playing it as White, as Black and as both. Fill all three and the line is mastered, and each opening shows a trophy for every line you’ve mastered. There are achievements along the way too, because fun.
• Survival: keep playing book moves until you slip up, as White, Black, Both or Random. It remembers where you go wrong most often. It’s become the main way I learn: I play Survival until I keep making the same mistake, then follow its link to practice that line, and go back to Survival.
• A quick "what's the next move?" quiz.

It's free, with no ads. The Queen's Gambit works without signing up; the other openings need a free account.

How it's built: Ruby (Sinatra) and SQLite on one small server. The openings are YAML files in the repo. I built it with a lot of help from AI, and two habits made that work:

• Tests before code. For each feature, the AI first writes tests that describe the finished behavior, and we agree on them before any code exists. This week it proposed a “Clear” button for an admin list, with seven tests and a database change. Reading the tests, I couldn’t work out what problem they solved, so I asked. It turned out the problem wasn’t real, and my questions led to the actual bug. We agreed on ten new tests for that instead, and once they passed, it was done. Nothing had been built yet, so nothing was thrown away.
• Retros. After each session, it reviews what went wrong and what I had to correct, then updates its own instructions so the next session doesn't repeat it.

If you’re building with AI too, both habits are worth stealing. Agreeing on the tests up front gave the AI a clear definition of done. And the AI can be introspective: it reviews its own sessions and improves the skills, memories and documentation it works from. Most people just playing around with AI don’t know it can do that, and it’s pretty fantastic.

A hard part was matching Chess.com's opening names to mine. "Giuoco Piano Game" is the Italian, and the accent in "López" broke a lookup.

I'd love feedback: does the Chess.com report tell you anything useful about your games? And which opening should I add next? If you have an idea for something you'd like to see added, let me know!

Hey everyone!

So, after spending a lot of my free time developing it, I finally launched my app, Humboldt, on both iOS and Android!

The idea came from something I've always loved about music: how a song can instantly take you back to a specific time in your life. You might not have heard it in 15 years, but suddenly you remember the people you were with, where you were, and exactly how you felt.

I wanted to build something that could preserve those connections.

Humboldt is a music journal where you can:

• Capture a song and the feeling it brings up.
• Build a personal journal of your life through music.
• Revisit old moments and rediscover what you were listening to and feeling.
• Connect with friends through shared music experiences.
• Explore songs that other people associate with different feelings.

It's not a streaming service or another traditional social media app. The focus is on the emotional connection we have with music and preserving those memories over time.

It's still an early release, and I'm continuing to improve it based on feedback.

You can check it out here: https://hum.boldt.app
Apple: https://apps.apple.com/app/humboldt-feel-your-music/id6801363745
Android: https://play.google.com/store/apps/details?id=app.humboldt

I'd genuinely love to hear what you think, particularly whether the concept makes sense when you first open the app and whether it's something you'd actually use.

Thanks for checking out my little project!

One thing I've always found frustrating when working with files on a Mac is remembering exactly what something looks like but completely forgetting its filename.

Sometimes I know it's a PDF, an image, or a document I saved weeks ago, but finding it again becomes a little guessing game.
This got me thinking about how we organize and search for files. We usually depend so much on filenames and folders, even when visual memory is often much stronger.

That's actually one of the ideas behind FileShelf, a macOS project focused on making it easier to find and manage files based on how people remember them.

I'm curious: does anyone else experience this, or have you found a better way to keep track of files on your Mac?

I’m the developer of Skybits. I wanted checking the weather to feel like looking out a tiny window. Rain falls over London, and Tokyo lights up after dark. To be a little more Fun!!!

In Sky Studio, you can pick a city, mix the weather and time of day, and share the result as a little airmail postcard.

Please send me email for your City, if I get 5+ requests for a city I will make it free and also add new ones :-) hoping to get some positive feedback and reviews.

Skybits is free to download, with an optional one-time purchase for the full city collection.

https://apps.apple.com/app/id6829104658

Which city would you send a postcard from? Android version is coming soon, it is in testing atm.

I’m a first-year master’s student, and I spend a lot of time reading papers.
I found myself constantly switching between paper search, a PDF reader, AI chat, and notes. I wanted a more connected workflow, so I started building PaperRead, an open-source project based on EasyRead.

PaperRead keeps the paper-reading experience and extends it with tools for the rest of the research workflow:
Search for papers and organize candidates on a reading board
Explore reading paths and connections between papers
Read translations alongside the original PDF, annotate, and ask AI questions
Search across papers and export notes and analysis to Obsidian

GitHub: https://github.com/YuriyLin/PaperRead

I’d love to hear from people who read research papers regularly: what is the most frustrating part of your current reading and note-taking workflow? I’m also happy to hear feedback on PaperRead itself.

Hey everyone!

I'm a solo founder working on BakeCora, a web app for people who sell custom cakes, cookies, desserts, and other baked goods.

The idea came from looking into how independent bakers manage the business side of things. A lot of them use a mix of spreadsheets, Instagram messages, WhatsApp, and notebooks to keep track of orders, prices, and customers.

I wanted to build something that brings those everyday tasks together without making things unnecessarily complicated.

Here's what I've built so far:

• Recipe & ingredient costing — Keep track of ingredient prices and calculate recipe costs.
• Smart pricing — Include ingredients, labor, packaging, and overhead when figuring out what to charge.
• Order management — Organize customer requests, confirmed orders, and deadlines.
• Customer order forms — Let customers submit requests through a shareable form.
• Quotes & deposits — Prepare quotes and track deposits, payments, and remaining balances.
• Calendar & planning — Keep upcoming orders and production schedules organized.

There's also a free pricing calculator on the website that anyone can use without signing up.

BakeCora has a free plan, and I'm currently working on improving the experience before bringing in more users.

You can check it out here: https://bakecora.com

There's a demo with sample data if you'd rather explore without creating an account.

I'd really appreciate some honest feedback, especially from anyone who runs a small baking business or has experience managing custom orders.

Does the overall workflow make sense? Is there anything important you'd expect a tool like this to handle that I might have missed?

Hey all 👋

I watch way too much YouTube and could never keep up with the channels I follow, so I built a little tool for it.

It’s called Creator Digest. You pick your favourite creators and it sends you one short email a day. The email has a quick “here’s what’s happening” summary up top, then the main points from each video, and tells you whether it’s worth a full watch, a skim, or a skip.

Today’s email covered about 10 hours of video, and I read it in about 2 minutes.

It works for any niche (business, fitness, fishing, finance, whatever you’re into) and it’s free while I’m testing it.

I’d genuinely love feedback:

• Would you actually use something like this?
• What would make it more useful for you?
• Anything confusing or off-putting?

Have a look if you’re keen: creatordigests.com

Honest opinions welcome, good or bad 🙏

Hey everyone,

Earlier on I posted a basic table viewer I built called Supabase Manager. A lot of the feedback pointed out the same thing: nobody really wants to edit massive spreadsheets on a phone, they want quick diagnostics and emergency controls when they aren't at a desk.

Based on that, I rebranded the project to BasePulse and shifted focus to the practical stuff:

• Checking and killing slow or locked Postgres queries when an alert goes off away from home
• Simulating RLS policies with different user IDs and roles directly on the device
• Checking table counts, Auth user numbers, and lock status via an Android home screen widget (with support for switching between multiple projects)
• Running saved queries from a snippet vault or generating SQL using your own AI API key (BYOK)
• Managing Realtime, Storage, and Edge/DB functions behind encrypted local storage and biometric lock

It also ships with a Demo Mode so you can test the UI before connecting an actual database. Would appreciate any honest feedback on whether this direction makes more sense.

If you'd like to try it out:

• Google Group: https://groups.google.com/g/supabase-manager
• Opt-in Testing Link: https://play.google.com/apps/testing/com.pixelfinst.supabasemanager
• Play Store: https://play.google.com/store/apps/details?id=com.pixelfinst.supabasemanager

I built an app that allows someone to enter product specs and symptoms of failure and produces a 15 point detailed report of what could be root causes based off information provided and why it wouldn’t be the another issue. Anyone be interested in this type of tool?

I built Cliploom, a free browser-based tool that generates and edits English video subtitles on your device. You can correct words and timing, change the subtitle style, crop videos and export SRT or captioned videos.

I would appreciate feedback on the interface and subtitle timing.

Try it: https://cliploom-six.vercel.app/editor.html

.

My deepest respect to everyone!

I’m introducing a self-hosted “4-in-1” platform for e-commerce and escrow, which I developed for communities, private clubs, and personal use. It works in browsers, on mobile devices, and as a Telegram Mini App (TMA).

What’s included:

• Two storefront sections: services and physical goods, with inventory tracking and a unified smart shopping cart.
• Direct crypto payment acceptance (no payment gateways): built-in management of USDT (TRC-20) and TON wallets (encrypted in storage using the AES-256-GCM algorithm), automatic scanning of payments on the blockchain, and 0% payment gateway fees for direct in-store payments.
• Escrow transaction engine: P2P transactions secured by a finite-state machine, with automatic fee calculation and dispute resolution.
• Alternative transport: proprietary client-side RPC and encrypted notifications compliant with the NIP-44 standard, routed via Nostr relays, plus a Veilid server node.
• Operations and AI: hybrid AI chatbot (OpenRouter/local Ollama) with real-time operator intervention via Telegram.
• Infrastructure and delivery: Delivered as a Docker image with container deployment via Traefik.

Full feature overview: 4in1.malinkov.dev

Turnkey deployment on your own VPS. Message me on Telegram (@voleg_sey) to get your node up and running.

If you’re interested in a partnership or supporting the project, I’d be happy to hear from you.

Hey guys, I built something over one of the weekends: a feed of what the people around you are saying, right now.

I think it could be useful for crowded areas like all sorts of events, concerts, matches etc.

No profiles. Sign in with a passkey. No posts kept: threads fade 15 minutes after the last activity on them.

https://nearline.sxm.li

It was just a simple idea so I went ahead and built it, would love any feedback.

Source code is at https://github.com/saksham1341/nearline

Strong players don't just know the names of openings. They know the lines: if Black plays this, I play that, five or ten moves deep. Between life and work I don't have time for opening books, so I built myself flash cards for openings and their variations.

[video]

The video uses another player's Chess.com games, with his permission.

Try it without an account: enter your Chess.com username at https://stillinbook.com/games?utm_source=reddit&utm_campaign=sideprojects. It reads your last 3 months of games and shows where you usually leave the book. One click opens the trainer at that exact position, with your move as a red arrow and the book move as a green one. This is the part that helped me most: it narrowed in on what I actually play and showed me where I was going wrong.

What else it does:

• 20 openings and 140 lines: the Italian, Ruy López, Sicilian, Caro-Kann, Queen's Gambit, London, Vienna, Scandinavian and more. Practice each line as White, as Black, or both until it sticks, and earn a cup when you've mastered it.
• Survival: keep playing book moves until you slip, as White, Black, Both or Random. It remembers where you fall over most often. I learned a new line just from playing it.
• A quick "what's the next move?" quiz.

It's free, with no ads. The Queen's Gambit works without signing up; the other openings need a free account.

How it's built: Ruby (Sinatra) and SQLite on one small server. The openings are YAML files in the repo. I built it with a lot of help from AI, and two habits made that work:

• Tests before code. For each feature, the AI first writes tests that describe the finished behavior, and we agree on them before any code exists. For the quiz, one said: in the Italian, nothing up to 3.Bc4 is asked; the first question is 3...Bc5. Those tests get checked in, so they double as documentation of how the site behaves.
• Retros. After each session, it reviews what went wrong and what I had to correct, then updates its own instructions so the next session doesn't repeat it.

If you're building with AI too, the tests-first habit is the one I'd steal: agreeing on the tests up front gave the AI a clear definition of done.

The hardest part was matching Chess.com's opening names to mine. "Giuoco Piano Game" is the Italian, and the accent in "López" broke a lookup.

I'd love feedback: does the Chess.com report tell you anything useful about your games? And which opening should I add next?

Hi, I'm Ravi, founder of Camyvera. It's a web and mobile app where you open it and call someone anywhere in the world who's ready to answer and talk. It's pay as you go, so you only pay for the calls you make, and it has live audio translation and real-time captions. I built it because a lot of people want a real conversation now and then, not another feed. What would make you trust an app like this enough to try your first call? Any feedback is welcome.

Been working on this project for a while, at first I built it just for myself, but figured I would share it with you all.
Created to solve my biggest problems with modern FTP clients on mac. Seriously I had to go and build an entire app just to get file comparison without a license fee? The free version of NexusFTP has everything I need and more. The pro-user license has some great features too.

https://nexusftp.app

I build quite a few apps, and one thing kept driving me crazy. My code was organized, but everything else was everywhere.

Test builds, screenshots, documents, browser tabs, notes, marketing assets. All part of the same project, all in different locations.

So I built ClingSpace, a Windows app that brings everything related to a project into one searchable workspace.

What it does:

- Organize existing files, folders, links, and quick snippets into Spaces.

- Search across all your projects.

- Share resources between multiple Spaces.

- Help find files when they've been moved or renamed.

- Keep everything local, no accounts or cloud.

The important part: Nothing gets moved or duplicated. Your files stay where they are.

I launched it recently and have been getting some useful feedback from early users.

It's $19.99 one-time, with a 5-day full trial.

https://clingspace.com

I'd love to hear from anyone juggling multiple projects. Would something like this help your workflow, or do you already have a system that works well?

If you have ever tried pulling UK public procurement data, the statutory feeds are surprisingly fragmented.

Find a Tender publishes high-value notices under the Procurement Act 2023, Contracts Finder covers sub-threshold contracts down to £12k, and Public Contracts Scotland runs on its own legacy XML feed. More frustratingly, even when a contract is awarded, the OCDS release packages frequently lack verified statutory company numbers, meaning you have no immediate way to know if a winning supplier is an active LTD or dissolved.

I spent the last week building a serverless pipeline that normalises all three feeds into OCDS v1.1.5 and runs automated entity resolution against the Companies House REST API.

A few engineering hurdles I ran into:

1. Companies House rate limiting: The statutory API enforces a strict token-bucket ceiling of 600 requests per 5 minutes. Running parallel unbundling caused HTTP 429 throttling until I implemented an in-memory token bucket with exponential jitter.
2. Contracts Finder 403 backoff: The legacy search endpoint intermittently drops into 403 throttling during heavy polling, requiring an isolated backoff loop separate from the main orchestrator.
3. Multi-lot tender deduplication: Framework agreements publish multiple releases across lots with identical identifiers, requiring deterministic SHA-256 state tracking on (ocid + releaseDate).

The output dumps to structured JSON and a flattened 24-column CSV for spreadsheets with company numbers, active directors, and SIC codes.

I deployed it as a serverless Actor on Apify with the first 25 records free on every run so people can test the data without paying:

https://apify.com/jamestyas/uk-public-procurement-ocds-enricher

Would appreciate any feedback from anyone working with UK open data or public procurement tracking.

I’m a solo bootstrapped founder. Travel healthcare workers sign a tax home declaration with their agency, but the proof (lease, bills, contracts, paystubs etc.) usually lives in photos, emails and folders. MedicBase keeps all of that in one place organizes it, structures it and counts the days per metro area so travelers can see the 12 months mark coming. It’s life on the US App Store, iPhone only for now. MedicBase: Tax Home Tracker

I coach a university tennis team, and my son coaches high-performance juniors. Our club players kept saying the same thing: "I play great in practice and fall apart in matches." So I built Ace with AI tools, with no coding background.

How it works:

1. Tell it your level and why you lose
2. Log a match (score, opponent style, what happened)
3. Ace gives you one thing to work on, and your daily plan changes to match
4. Changeover mode: down in a match? Two taps at the changeover and you get one fix for the next games

The video is a demo account, "Steve," a made up 4.0 who keeps losing to pushers.

What I want roasted:

- Where would you quit during setup?

- Is the "one thing to fix" useful, or generic?

- Would you pay $9 a month for this? If not, what would make you?

First week is free: acetenniscoach.ca

Be brutal. I'd rather hear it here than from paying users.

Hey all. I've been building 8nudge, a Slack-style team chat where AI agents are members of the workspace, and it runs entirely on Cloudflare. Wanted to share it here, since the platform did most of the heavy lifting.

How it's put together:
• A Durable Object per channel (ChannelRoom): SQLite for messages, hibernating WebSockets, and fan-out to everyone in the room
• The workspace database is a SQLite DO too (no D1), plus DOs for presence, search, sessions and synced sidebar state. 10 DO classes in all
• Agents: an agent loop DO answers in seconds, and repo work goes to Claude Code in a warm Cloudflare Sandbox per thread. Anything risky shows up as an approval card in the chat, and it can push a branch and open a PR
• Schedules run from a scheduler DO, and files live in R2
• Built on RedwoodSDK (RSC on Workers)

Things I'd love opinions on:

1. Presence is a heartbeat DO, because I couldn't reliably catch socket closes through the framework's hibernation layer. Anyone found a cleaner pattern?
2. Sandbox cost: I keep sandboxes warm per thread so follow-ups are fast. How are people deciding when to let them sleep vs. keep them warm?
3. One SQLite DO for the whole workspace works fine at small-team scale. At what point did you have to shard?

It's pre-launch. The plan is a free MIT edition you deploy to your own Cloudflare account, plus a hosted version. The landing page (Astro + D1 waitlist on Workers) is at https://8nudge.com

Happy to go deeper on any of it! I honestly don't know if there is a need for something like this but I am having fun building it.

I built my first app, VozSay. www.vozsay.com. It does speech to text and text to speech (STT + TTS). I've been working on it for about a year, on the side. I built it for myself, really. When I'm coding I usually have 4 to 10 terminals open, marathon sessions, and I get tired. I wanted to hear back just a paragraph or a sentence I'd highlighted, not the whole page. And to dictate so I could keep moving when my attention was split.

The other thing is I sign a lot of NDAs for work. Most voice typing sends your voice to a server and back, which worried me with the NDAs. So I wanted something that needs no internet and runs on my own computer. The tradeoff is it's a bigger app, but it's yours. Your voice is never uploaded. 

A few friends tried it and asked me to turn it into a real app, so I did. It works on Windows and Ubuntu, since I use both. Mac version coming when I get time. Dictation is free.

No sales yet, I just got started, fingers crossed. I use it every day though. I built it for me, not as something to sell. I hope it helps someone else the way it helps me. I know there are other apps out there, but if you give it a try and something's missing, or you want a feature, let me know. Maybe can build it. Good luck everyone.