Ask HN: What are you building that's not AI related? • Hacker News Board

Re: Ask HN: What are you building that's not AI related?

#231

Post by biswajitkar01 » Mon, Apr 13, 2026, 2:23 AM UTC

I am working on an interesting calculator called minusplus.app ( -+ ).

This is an infinite canvas calculator. Where you click anywhere and type numbers, Press space or enter, and it will automatically calculate. You can tag, add comments, and MinusPlus has some great shortcuts, which make it efficient to calculate.

I am an SAP Finance consultant, and have to do a lot of calculations daily. And after using this, I can't go back to any other normal calculator.

Re: Ask HN: What are you building that's not AI related?

#232

Post by vincentli2010 » Mon, Apr 13, 2026, 3:06 AM UTC

personalized neoantigen cancer therapy for pets

Re: Ask HN: What are you building that's not AI related?

#233

Post by philipnee » Mon, Apr 13, 2026, 4:45 AM UTC

just an anonymous public billboard :)

https://www.litboard.net/

Re: Ask HN: What are you building that's not AI related?

#234

Post by yogeshmali82 » Mon, Apr 13, 2026, 5:47 AM UTC

I am building an expense tracker for small business owners - https://xpenses.co.

I am actually solving my own problem. This should not only help small business owners in tracking expenses, but also prepare Schedule C report for tax forms. Business owners can just download this report and take it to accountant.

Re: Ask HN: What are you building that's not AI related?

#235

Post by yellow_lead » Mon, Apr 13, 2026, 6:43 AM UTC

biswajitkar01 wrote: post #231

I am working on an interesting calculator called minusplus.app ( -+ ). This is an infinite canvas calculator. Where you click anywhere and type numbers, Press space or enter, and it will automatically calculate. You can tag, add comments, and MinusPlus has some great shortcuts, which make it efficient to calculate. I am an SAP Finance consultant, and have to do a lot of calculations daily. And after using this, I can…

I suggest you make the URL work without the www! For instance, as you wrote it here

Re: Ask HN: What are you building that's not AI related?

#236

Post by labarilem » Mon, Apr 13, 2026, 7:12 AM UTC

I'm building a manually curated catalog of videogames made by HN users. The UI is done and I'm in the phase of adding data to catch up to today's games. Check it out: https://hn-games.marcolabarile.me/ (includes games up to October 2024 atm).

Re: Ask HN: What are you building that's not AI related?

#237

Post by pona-a » Mon, Apr 13, 2026, 8:06 AM UTC

BrunoBernardino wrote: post #173

KurSix wrote: post #168

Earlier quoted context omitted.

Regarding the bots: since you're building a privacy-first product, you should look into a Proof-of-Work captcha (like Hashcash or mCaptcha). Just have the user's browser mine hashes for a couple of seconds before issuing the trial token. A normal human won't even notice it, but it'll burn so many CPU cycles for bot farms that abusing your API becomes economically unviable

Thanks for the suggestion, I’ll look into it!

As someone interested in cryptography, I'd also recommend a VDF. A Wesolowski VDF isn't that hard to hand-roll [0] [1] and will make parallel attacks much harder while penalizing low-power devices less.

[0] https://reading.supply/@whyrusleeping/a-vdf-explainer-5S6Ect [1] https://eprint.iacr.org/2018/623

Re: Ask HN: What are you building that's not AI related?

#238

Post by codexetreme » Mon, Apr 13, 2026, 8:17 AM UTC

I'm currently developing a dapo star. Trying to get fabrics , designs and make a nice lil group where we can teach and learn tricks :)))

It's not software, but that's what I enjoy making right now

Re: Ask HN: What are you building that's not AI related?

#239

Post by tetek » Mon, Apr 13, 2026, 9:12 AM UTC

I'm building a skateboarding company in Europe.

https://axiomsskateboards.com

Re: Ask HN: What are you building that's not AI related?

#240

Post by pawelkomarnicki » Mon, Apr 13, 2026, 5:18 PM UTC

bbyford wrote: post #206

pawelkomarnicki wrote: post #183

I have realized that playing board games with other people makes my mental health better and started work on a community platform and at some point physical space to connect: https://GamesAgainstLoneliness.org Also working on a journaling app but it’s still in the works.

love the website, but sounds like the community mostly needs places to actually go be together, feel like maybe the website and members thing could have happened after maybe?

I see your point and connecting places and people (and of course the ultimate goal of opening my own place) is on the roadmap. The thing is that I don’t want to either tie myself to a specific place or be dependent on specific area (apart from starting up in Berlin of course).