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Posted by david927 1 day ago

Ask HN: What Are You Working On? (March 2026)

What are you working on? Any new ideas that you're thinking about?
280 points | 1071 commentspage 26
hsdev 1 day ago|
I'm currently working on https://FaunaMap.app (web/Android/iOS) which lets nature enthusiasts see which birds, mammals, reptiles, etc. can be expected at any location worldwide using the past 20 years of GBIF observation data. It features an interactive global sightings map, color-coded to quickly spot recent rarities nearby. Public birding hides from OSM and a hotspots heatmap are included for trip planning. Users can quickly log large numbers of observations in the field. Observations with images appear in an Instagram-like feed for interaction with other users. Personal species life lists (global, per country, and custom locations) are also included. Feedback is very welcome :)
princeholdings 1 day ago||
Two things I've been building this year, both trying to solve real problems I care about:

https://talonwatch.com : I kept seeing founders discover their Stripe keys were public or their database was wide open, usually after the damage was done. Built a passive security scanner for vibe-coded apps so that's easier to catch early. Free surface scan, no account needed.

https://thetracejournal.com : A small iOS journal that pairs a song with each entry. Music is tied to memory in a way nothing else is, and I wanted a place to capture that.

jondwillis 1 day ago||
https://getvalara.com - PDF appraisal document in, grounded appraisal review out in 5-10 minutes to aid in risk management for lending institutions and individual appraisal reviewers.

We use landing.ai to parse the PDF, as well as useworkflow.dev to durably perform other work such as rendering PDF pages for citations, and coordinating a few lightweight agents and deterministic checks that flag for inconsistencies, rule violations, bias, verify appraiser credentials, etc. etc. Everything is grounded in the input document so it makes it pretty fast and easy. We’re going to market soon and have an approval sign up gate currently. Plenty of new features and more rigorous checks planned to bring us to and exceed parity with competition and human reviewers.

There’s plenty of margin for cost and latency versus manual human review, which takes an hour or more and costs $100 or more.

pheelicks 1 day ago||
A5 - a pentagonal geospatial index: https://a5geo.org

If you’ve used H3 the semantics should be familiar. The biggest differentiator is the fact that cells have exactly the same area globally, for why this matters see: https://a5geo.org/docs/recipes/a5-vs-h3

Since starting the project last year and providing implementations in TypeScript, Python and Rust it’s been great to see a community grow, porting or integrating into DuckDB, QGIS and many more: https://a5geo.org/docs/ecosystem

kn100 1 day ago||
Recently built https://entrycast.com/ - there are other products kind of like it on the market already but I had some specific use cases I wanted personally, and decided rather than making it just for me, I'd for the first time in my life make it something others could buy too. No customers so far, but I don't really mind, to be honest!
Kinrany 21 hours ago|
You missed a perfectly good opportunity to explain your product :)
faceless3 1 day ago||
I'm porting Jetpack Compose to Rust. The Rust would be the future default ai language. Having the familiar well designed by Google UI API will help Android developers to be in a loop. https://github.com/samoylenkodmitry/Cranpose
gbro3n 1 day ago||
VS Code Agent Kanban (just made it to the front page)

https://www.appsoftware.com/products/developer-tools/agent-k...

It's a VS Code extension that implements a Kanban board backed by markdown files. It's set up to allow you to communicate with GitHub Copilot chat via markdown files, so you have a clear permanent record of your considerations, decisions and actions. I'd been getting great results with a similar but more manual workflow, so I built this to make managing the markdown files easier and to give me the ability to visually organise with some shortcut commands.

ben_w 1 day ago||
• Rogue-like FPS running in the browser

• Dice roller app

• Decompiling a trail cam app so that we don't need to use the stupid UI in the stupid app

• Woodworking. Not code, actual wood. Taking some pine logs I got from the neighbour's trees when they fell over and turning them into a bench and two tables.

• Job hunting?

mkprc 1 day ago||
Hosting and nicely typesetting some of the essays/speeches of Alfred North Whitehead on education and the role of Universities, now in the public domain. Most are from Project Gutenberg, but I've been manually transcribing a couple others.

https://mkprc.xyz/public-domain/whitehead/

xamuel 1 day ago|
I'm working on arranging talks and poster presentations at various conferences/seminars to spread knowledge of my latest academic paper, "Specieslike clusters based on identical ancestor points". In the paper, among other things, I argue that (we should define species in such a way that) for any organism in any species, either the species is made up almost entirely of descendants of that organism, or else the species is made up almost entirely of non-descendants of that organism. This is a funny property because most people who hear about it fall into one of two camps, those who say it is obviously true, and those who say it is obviously false!

The paper in question: https://arxiv.org/abs/2602.05274 (published in the Journal of Mathematical Biology)

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