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Ask HN: What are you working on? (September 2025)

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Re: Ask HN: What are you working on? (September 2025)

#401

Post by cjflog »

femto wrote: post #244
cjflog wrote: post #10

Currently a one-man side project: https://laboratory.love Last year PlasticList discovered that 86% of food products they tested contain plastic chemicals—including 100% of baby food tested. The EU just lowered their "safe" BPA limit by 20,000x. Meanwhile, the FDA allows levels 100x higher than what Europe considers safe. This seemed like a solvable problem. Laboratory.love lets you crowdfund independent testing of s…

A couple of suggestions: The completed entry should include the date of the test results, so currency can be judged, Ideally the completed entry should contain a scan of the full test report from each of the accredited laboratories.

Both good ideas and on the roadmap!

Re: Ask HN: What are you working on? (September 2025)

#402

Post by danielvaughn »

I'm working on Matry - it's a tool for designing in the browser. It's kind of like a cross between Webflow, Vim, Storybook, and Cursor. I'm trying to strike a fine balance that I don't see in existing tools.

Nothing to demo yet, but hopefully I'll have something soon.

Re: Ask HN: What are you working on? (September 2025)

#403

Post by cjflog »

ibaikov wrote: post #224
cjflog wrote: post #10

Currently a one-man side project: https://laboratory.love Last year PlasticList discovered that 86% of food products they tested contain plastic chemicals—including 100% of baby food tested. The EU just lowered their "safe" BPA limit by 20,000x. Meanwhile, the FDA allows levels 100x higher than what Europe considers safe. This seemed like a solvable problem. Laboratory.love lets you crowdfund independent testing of s…

This is great. I thought about a different model even before plasticlist: make a subscription and test various products, but people will have a number of upvotes based on their sub streak. They vote for food to test, and then you show results to everyone subbed. Kind of like what examined does, but they do deep dives into medical topics for subs. I think this model will work better than the one you currently have. Aw…

I definitely considered a voting mechanism, but there are a few million active, buyable CPG UPCs in the U.S. at any given time. When conducting some basic market research for this project, I found that most people are only willing to pay to find results about the specific products they care about.

Re: Ask HN: What are you working on? (September 2025)

#405

Post by danielvaughn »

Soupy wrote: post #320

"Google maps but for old maps": https://pastmaps.com This is a solo startup that I've been working on for 2 years now. It's a labor of love and I'm very lucky and thankful that it's big enough to surprisingly pay all of our bills. Still constantly feeling FOMO over all of my startup buddies working with AI and LLMs while I plug away at old maps and GIS . It gets ~80K MAUs and just slowly and consistently is growing o…

I've always wanted a map with a horizontal slider for the year, so I can watch the map change as you slide further back in time.

I know that's different than what you're building, but what you're doing is super cool. Nice work!

Re: Ask HN: What are you working on? (September 2025)

#406

Post by anshumankmr »

keithasaurus wrote: post #365

Updating my validation library for python, koda-validate ( https://github.com/keithasaurus/koda-validate ). Focusing on ergonomics improvements. Just released an improvement to the __repr__ for Invalid types. Potentially working on expanding the ability to generate validators from arbitrary typehints, ie `get_typehint_validator(list[str | int])`. It has good coverage, but I suspect I'm blind to some obvious holes. Wo…

Pydantic already covers type-driven validation and it works well enough. What is the main value add in Koda? Just curious.

Re: Ask HN: What are you working on? (September 2025)

#407

Post by cjflog »

someuser54541 wrote: post #304
cjflog wrote: post #10

Currently a one-man side project: https://laboratory.love Last year PlasticList discovered that 86% of food products they tested contain plastic chemicals—including 100% of baby food tested. The EU just lowered their "safe" BPA limit by 20,000x. Meanwhile, the FDA allows levels 100x higher than what Europe considers safe. This seemed like a solvable problem. Laboratory.love lets you crowdfund independent testing of s…

Can you talk a bit about the tech stack?

React + Vite + Tailwind on the frontend; Netlify Functions for backend with Stripe, Supabase, and email integrations; content via Markdown build script; deployed on Netlify; linted with ESLint; JavaScript-only codebase

LLMs wrote 99% of the code.

Re: Ask HN: What are you working on? (September 2025)

#408

Post by whimbyte »

I created a 2D platformer inspired by the classic Mario games. The game is called Jolly Land Adventure and I made it because I wanted a simple platformer that's easy to just pick up and play.

The game is available on Steam for Windows, Mac and Linux. The demo contains the entire first episode with 30 levels for anyone who wants to try it out.

https://store.steampowered.com/app/3624050/Jolly_Land_Advent...

Re: Ask HN: What are you working on? (September 2025)

#409

Post by liu3hao »

jsd1982 wrote: post #340
liu3hao wrote: post #225

Hi HN, I am working on Circuitscript, a language based on python to describe electronic schematics/circuits: https://circuitscript.net/ Recently, I have released a simple IDE (called the Bench) to try Circuitscript online: https://bench.circuitscript.net/ The next steps are to create more schematics with Circuitscript as examples to test the limitations of the language and to generate PCB designs with KiCAD. The Circ…

I love this idea! Just wanted to send a note of encouragement. Keep at it!

Thank you very much!

Re: Ask HN: What are you working on? (September 2025)

#410

Post by ethanseal »

Soupy wrote: post #320

"Google maps but for old maps": https://pastmaps.com This is a solo startup that I've been working on for 2 years now. It's a labor of love and I'm very lucky and thankful that it's big enough to surprisingly pay all of our bills. Still constantly feeling FOMO over all of my startup buddies working with AI and LLMs while I plug away at old maps and GIS . It gets ~80K MAUs and just slowly and consistently is growing o…

GIS is underrated. This is awesome!

Have you looked into speaking with the various SHPOs in each US State/Territory?

I've worked with several of them a fair bit and they have a ton of old maps hidden internally. Especially for small, specific areas of the state, like historical districts.

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