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

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

#821

Post by alcazar »

I'm working on an anonymous Dead Man's Switch (https://alcazarsec.com/deadmanswitch). You don't need any personal information to sign up, and you can configure email messages that will be automatically sent only when you stop checking in.

This can be useful for families handling digital legacy, solo founders, journalists, and others.

Let me know if you give it a try!

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

#822

Post by 72736379 »

I built https://k.cote.sh which is a kanban board primarily for university students. I built it for myself as I'm currently doing the OMSCS program at Georgia Tech. I used to use Trello which was ok, and this semester I used just my personal calendar, which was also just ok. The thing with the OMSCS program is that certain classes have different time zones for deadlines (from what I've seen it's either eastern or AoE/UTC-12). Then there's also the concept of "soft deadlines" for some classes. And most classes also release assignments/quizzes in batches on a particular date. Canvas (the LMS used at Georgia Tech) does expose an ICS you can subscribe to, but there's also a bunch of noise- "office hours", random OMSCS-specific announcements, etc. I used Trello more extensively when I was in undergrad since an in-person program typically doesn't have the quirks above. Because I wanted to access it on mobile too, I deployed it. It's free and doesn't even require sign ups to use.

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

#823

Post by rikroots »

I'm building a client-side-only web page that will (eventually) allow users to build their own image filter and batch-apply it to a bunch of images.

https://kaliedarik.github.io/sc-filter-builder/

No idea if anyone will be interested in using such a (free, MIT) web tool, but I'm having lots of fun putting my canvas library's filter engine (which is inspired by SVG chainable filters) through its paces.

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

#824

Post by dvliman »

I have been working on a few iOS apps for my own use case (stock/options trading)

Price & Volume: https://apps.apple.com/us/app/stock-price-volume/id676015355... It is often helpful to see volume supports price action. I have the price/volume change color-coded with gradients so it is easy to see if they are following or breaking trends

Options Premium: https://apps.apple.com/us/app/options-at-the-money-premiums/... See all options premium on one screen

Stock Portfolio & Watchlist: https://apps.apple.com/us/app/stock-portfolio-watchlist/id67... The idea is I'd like to group stocks by sectors and see if there is sector rotation going on. I will have an UI update soon

I get the data from my brokerage account. All apps is free but user may choose to support/donate if willing

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

#827

Post by Soupy »

I'm OCR-ing 200K+ historical maps (or at least trying). For example: https://www.threads.com/@that.map.guy.craig/post/DXA59AylJng...

This has only really become possible within the last 3 months and I'm still shocked at how good some of the new models are at tasks like this.

I'm not a crazy person, promise. I run https://pastmaps.com as a solo bootstrapped founder and this data is so valuable to my customers. It's been a dream of mine to do this as part of my map digitization pipeline and I'm so excited for the product experiences this is going to unlock.

So much to build, so little time

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

#828

Post by NoSalt »

It's been a LONG time since my college linear class. I know it is not impressive or fancy, but I am working on a little page that will let you create a couple of matrices or a matrix and a vector, and will do the basic algebra for you. I know there are already many sites out there that do this, but this is also helping me refresh my linear algebra knowledge. Multiplying two matrices is crazy, right?

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

#829

Post by serkanh »

Building FocusedFeed (https://focusedfeed.app) an iOS app that lets you organize your YouTube subscriptions into categories and actually find the creators you care about. YouTube's home feed is basically useless if you're subscribed to 200+ channels. Half of it is Shorts, the other half is stuff the algorithm thinks you want. I just wanted a simple way to say "show me my tech channels" or "show me my cooking channels" without digging through noise.

So I built this, you sign in with Google, it pulls your subscriptions, and you group them however you want. Shorts get filtered out automatically. Working on AI newsletter digests too, so you get a weekly summary of what your favorite channels posted without having to open YouTube at all.

There's a web app(app.focusedfeed.app) but the iOS app is where I spend most of my time now.

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

#830

Post by lnenad »

I didn't like the way diagramming apps looked like (at least web based ones) so I built https://grafly.io. No server, uses localstorage and has download/upload of diagrams/entire db. Also has a description of the datastructures so AI can generate the diagrams for you. Also you can import Mermaid and other text based diagrams.
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