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Posted by david927 1 day ago

Ask HN: What are you working on? (September 2026)

What are you working on? What have you been curious about lately?
284 points | 885 commentspage 26
jahala 21 hours ago|
I’m working on an app to help my late diagnosed ADHD - through sound.

The app wraps whatever is playing on mac through device convolution (old radio, hifi system) - Room convolution (a bedroom, a forest) and adds ambience (rain, wind, waves) and Apples spatial processing - so it sounds like a real space.

For me - hearing the sound in a space really helps more than just the dry sound.

https://www.surraura.com/

joshcartme 19 hours ago||
I've always wanted to make a video game, and over the past few months have been building one, Fairway Rogue. It's a procedurally generated, deck-building, mini-golf roguelite. It's been a lot of fun, and I've learned a lot.

I remember someone saying that when you build a game, you end up building tools to help you build the game. I never really got that, but now I do. I've spent quite a bit of time working on tools to help me balance the various game mechanics.

One weird learning, it was much easier to get it on the iOS app store, than the Google Play store. Google wants you to have a closed playtest with at least 12 players, for 14 days. I did that and they said the testers weren't engaged enough.

If you want to check it out on iOS https://apps.apple.com/us/app/fairway-rogue/id6783598189, I'm still trying to get it on Android

gusco 10 hours ago||
https://intestinate.com/gusco/

TUI file manager with Bitwarden/SFTP/S3 support written in go.

Runs pretty much anywhere.

Current feature in the works is built-in audio player.

As someone who still likes to purchase and organize music in files and directories, I couldn't resist the itch to code a worthy competitor to Cubic Player :)

Findecanor 1 day ago||
I'm designing a retro-style gaming mouse for retro-computing: Amiga, Atari, C64, and several protocol variants. It also has USB. It has a scroll wheel: read using extended protocols introduced by recent adaptors from USB, and a configuration interface.
Benjamin_Dobell 21 hours ago||
Still plugging away teaching kids to code and hand draw their own computer games:

https://breaka.club/blog/why-were-building-clubs-for-kids

Have been running an in-school pilot over the last school term. Has been super insightful and led to a heap of changes to optimize UX. However, the biggest challenge has been delivery in this environment.

Trying to run a game in a browser on school iPads powered by really locked down networks has been challenging. Some school iPads will crash (out of memory) when launching the camera view, whilst others run flawlessly. We use a fork of Godot, and are constantly fighting to strike a balance between UX (increased parallelism) and browser device constraints i.e. a limit on how many web workers we can fit in memory.

In addition to our main (build and play your own RPG) experience, we also stream games direct to iPad. In particular a modded version of Overcooked! 2 that teaches kids to code — Overcooked itself was never even released on iPad. We've built our own Kubernetes system that spins up (a license limited number of) games/pods on demand backed by (time sliced) NVidia GPUs. This is literally running out of my home office. Despite the complexity of building all that, the Kubernetes and GPU time slicing wasn't even the largest hurdle. Turns out UDP is a no-go on the school network, so direct WebRTC was out the window. Instead we're using Cloudflare's TURN relay with TCP. Which much to my surprise, is holding up quite well.

Definitely a learning experience. However, kids are having a blast. Can't wait to roll this out further!

jorelfermin 18 hours ago||
I have been working on a developer first, read-only first, safety first, Cloud Cost Analyzer. I focus on analyzing cloud infra for waste. It grew out of my time at AWS and then consulting, spelunking through AWS, Azure, (GCP soon) accounts, finding real waste infrastructure. Its primary mode of operation is a rust CLI that you the developer, can run on your workstation, github action, gitlab ci, jenkins, etc and create an actionable report / test that can be used to control costs while maintaining performance and never exposing your credentials, access tokens, etc.

You would be surprised at how many over / suboptimally-provisioned dbs, idle resources, forgotten EBS snapshots, outdated / previous-gen instance types, and vestigial networking that leads to nowhere I find.

If you want to check it out https://cca.dragonfractal.com

welldoneator 18 hours ago||
I'm working on TableForge[0], it's a browser based, solo or multiplayer, D&D 5e game. In TableForge, the DM is agentic with access to tools strictly following 5e rules. The DM is responsible for narration and reacting to players but your character sheet, inventory, spells are all real server resources you manage. The DM can interact with them through deterministic 5e-based tools (dice rolls, damage, sheet updates, memory). Players can play in real time or async. You can provide the DM a premise (or pick one from the library) and it'll flesh out a full campaign story arc. Either way it's a fresh story arc reacting to your actual decisions, every time.

It’s been really fun working on it and especially rewarding seeing the game bring friends together.

[0] https://tableforge.gg/

faangguyindia 21 hours ago||
Working on a full workout and dieting stack!

17,000+ users already! It's a completely ad free, subscription free product. MacroCodex app, which results in guaranteed weight loss or weight gain outcomes within 2-3 weeks. Many people will start seeing results within the first week. Don't believe? Read the reviews.

MacroCodex is a "Total Calorie Burn of the day" using completely sensorless method explained here: https://macrocodex.app/knowledge/macrocodex/smart-calorie-bu...

CalorieCodex - calorie tracking app which has a Agent Harness built in using BYOK (bring your own key model). How does it help? Using this anyone can track calories and plan their meals. Agent includes skills which help you accurately track calories and plan meals.

Symbiote App - Think "BoostCamp" but completely free, no ads, and fully programmable workout tracker

Example of GZCLP: https://symbiote-studio.macrocodex.app/?builtin=gzclp

nbpname 15 hours ago||
I am working on solving Prompt Injection!

I am building a new kind of LLM runner which lets you understand the internal reasoning process, and which can be automated to intercept hallucinations and prompt injections before they cause more damage.

(No public code yet, but I do intend to open source it)

fredwu 15 hours ago|
https://feedbun.com - a browser extension that decodes food labels and recipes on any website for healthy eating, with science-backed research summaries and recommendations.

Been working on Feedbun for a little while, Elixir/Phoenix stack, with bespoke LLM fleets for production workflows. Recently just started using React Native (Expo) for the companion mobile app so I can use it when I shop IRL.

Also started working on a 2D strategy game using Godot engine, still super early days. Been fun to experiment with different LLMs capabilities on game development.

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