Ask HN: What are you working on? (April 2025) • Hacker News Board

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

#231

Post by pheelicks » Mon, Apr 28, 2025, 9:06 AM UTC

A pentagonal geospatial indexing system: https://a5geo.org/

If you’ve used H3 or S2 it should be familiar, the major difference (apart from the fact it uses pentagons) is that the cell areas are practically uniform, whereas alternative systems have a variance of around 2 between the largest and smallest cells, making them less useful for aggregation. The site has many visual demos, e.g. https://a5geo.org/examples/area

The code is open source: https://github.com/felixpalmer/a5

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

#232

Post by alecsm » Mon, Apr 28, 2025, 9:10 AM UTC

I've never coded in Python anything besides some scripts here and there.

So I started making a simple roguelike and an engine for a browser game. Nothing fancy but entertaining.

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

#233

Post by simonebrunozzi » Mon, Apr 28, 2025, 9:11 AM UTC

I am a tech guy, now turned VC in Europe. However, something curious and interesting I'm working on with some partners is the renovation of a Palazzo in Venice. Learning new things almost every week. Absolutely stressful, and exhilarating. Completely different from coding or investing in tech startups.

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

#234

Post by zby » Mon, Apr 28, 2025, 9:12 AM UTC

I am working on an app for rhythm training for dancing. The first step is beat detection in music - here is my code for generating videos with beat counting: https://github.com/zby/beat_counter (vibe coding warning). Beat detection seems to work OK, downbeats are a bit more tricky and I have found not good solutions for further structuring of music (for dancing they usually count to 8 - that is two 4 beat measures - or 6 - two 3 beat measures for Waltz for example, I am not sure about 2/2 measures and other). Seeing all the LLMs generating music I thought there should also be LLMs interpreting music - but so far I have found no such model the available algos seem to be from a previous decade.

My current plan is to test the counting with people with good rhythm sense and once I find a good algo for beat detection I'll proceed with writing the app.

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

#235

Post by cahaya » Mon, Apr 28, 2025, 9:12 AM UTC

Building a AI-assisted aviation regulation compliance tool for aviation professionals: https://aviation.bot At the moment just a RAG with EU aviation regulations. Soon FAA, UK CAA, and more complex AI agent features that do more complex deep research.

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

#236

Post by barrell » Mon, Apr 28, 2025, 9:13 AM UTC

_puk wrote: post #180

barrell wrote: post #65

I have been working on http://phrasing.app - a language learning & acquisition tool for polyglots. I’ve been using it to study ~12 languages (5 on maintaince, 2 seriously studying, 5 casually “studying”) and it’s starting to feel really good. If anyone is learning/maintaining several languages, please reach out! I’m looking for beta testers in as many languages as possible (it supports 120+). In what I believe is sti…

Sounds good. What languages do you support? Learning Latvian through Anki flashcards, but it's not well supported by the main platforms, and there's not a huge amount of content out there for learning. This alongside a couple of the usual suspects. As a side note, on a Pixel 4a 5G (old phone , but functionally not ready for e-waste) the homepage bleeds all over. Some components into each other, others off screen. Mig…

Oh no, the website is brand new, it should be working everywhere. I'll have to dig up an older android, I should have one somewhere.

Languages below, if you know their alpha 3 code. Currently having some issues with Thai and Zulu though, so they're temporarily disabled until I have time to fix them.

I have not ~tested~ verified it for Latvian, I would be curious to hear your thoughts. It has been working pretty well for Maltese, Albanian and Macedonian though, which should be lower resource than Latvian!

As mentioned elsewhere, the first time user experience is abysmal. If you reach out though we can hop on a call and get you set up - or in a few weeks I'll have a video done and up. In the meantime, you should be able to create an expression (in the nav bar for desktop and mobile) fairly intuitively.

afr, amh, ara, ara-are, ara-bhr, ara-dza, ara-egy, ara-irq, ara-jor, ara-kwt, ara-lbn, ara-lby, ara-mar, ara-omn, ara-qat, ara-sau, ara-syr, ara-tun, ara-yem, asm, aze, bel, ben, bos, bul, bxr, cat, ces, chu, cop, cym, dan, deu, ell, eng, est, eus, fao, fas, fil, fin, fra, fro, gla, gle, glg, glv, got, grc, guj, hbo, heb, hin, hrv, hsb, hun, hyw, iku, ind, isl, ita, jav, jpn, kan, kat, kaz, khm, kir, kmr, kor, lao, lat, lav, lij, lit, ltc, lzh, mal, mar, mkd, mlt, mon, msa, mya, myv, nan, nep, nld, nno, nob, ori, orv, pan, pcm, pol, por, por-bra, por-prt, pus, qaf, qpm, ron, rus, san, sin, slk, slv, sme, som, spa, spa-arg, spa-bol, spa-chl, spa-col, spa-cri, spa-cub, spa-dom, spa-ecu, spa-esp, spa-gnq, spa-gtm, spa-hnd, spa-mex, spa-nic, spa-pan, spa-per, spa-pri, spa-pry, spa-slv, spa-ury, spa-usa, spa-ven, sqi, srp, sun, swa, swe, tam, tel, tha, tur, uig, ukr, urd, uzb, vie, wol, wuu, yue, zho, zht, zul

EDIT: I have tested it for Latvian, I know it technically works. I however have not had any Latvian speakers review it's quality

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

#237

Post by johnjungles » Mon, Apr 28, 2025, 9:15 AM UTC

https://skeet.build

Building a tool to supercharge your Cursor, Windsurf, Claude and other developer tools by connecting it to polished, high quality mcp servers for linear, slack, DBs, and other useful workflows.

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

#238

Post by veraero » Mon, Apr 28, 2025, 9:15 AM UTC

Building a foot traffic API to see the busiest venues (bars, shops, museums, etc) in (your) worldwide neighborhood: https://besttime.app We are now busy adding more demographic data like age, male/female ratio, tourist level, etc

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

#239

Post by barrell » Mon, Apr 28, 2025, 9:18 AM UTC

yurishimo wrote: post #143

barrell wrote: post #65

I have been working on http://phrasing.app - a language learning & acquisition tool for polyglots. I’ve been using it to study ~12 languages (5 on maintaince, 2 seriously studying, 5 casually “studying”) and it’s starting to feel really good. If anyone is learning/maintaining several languages, please reach out! I’m looking for beta testers in as many languages as possible (it supports 120+). In what I believe is sti…

Since you're in Amsterdam, I'm curious how well you think it performs for learning Dutch? I'm a native English speaker with a B2~ in Dutch and just looking to progress more. I've not used spaced repetition up to this point in my learning journey (almost 3 years).

It does really well, 95% of the time. The application was built to jump in at any levels - find a movie you want to watch, align the subtitles, see the most important words, create expressions with words you don't know, and the SRS should focus on the words most important to you.

For my Dutch (which was probably once a high B2, now probably a low B1) I only use the audio review when walking my dog or cooking. It plays the audio of the cards in a playlist, so I practice hearing and repeating them.

It's not so self serve at the moment, but if you get in touch I can get you up and running.

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

#240

Post by pduggishetti » Mon, Apr 28, 2025, 9:21 AM UTC

I am building https://hire.blue, its a platform for HR to reduce time to interview by 90% while being applicant friendly, this can be used as a ATS for small companies and for founders!