An Android alarm you can only turn off by doing math
HeyUtho is an alarm clock with no snooze button. When it rings, you have to solve three quick math problems in a row before it goes quiet, and one wrong answer sends you back to the start. By the time you've done the math, you're awake. It's free and open source, with no ads and no account, and everything stays on your phone. The name is Bengali: "utho" means "wake up".
My friend Sajib kept hitting snooze half-asleep and missing his mornings, so he started building an alarm that makes your brain do a little work first. He had the core idea running; I jumped in to help turn it into something people would actually want to install, with a cleaner look, a proper name, and releases that ship themselves instead of being built by hand.
Contributor. I did the blue Material 3 redesign, the HeyUtho rebrand and icon, a time-picker fix, and the automated release pipeline. The original app is by Sajib (@SajibAhmedNls).
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A personal, printable coloring book from a theme and a child's name
Type a theme like "magical forest animals" and a child's name, pick up to ten pages, and the app makes a coloring book just for them: a cover with their name, then simple line drawings with thick black outlines, downloaded as an A4 PDF ready to print at home. A friendly chatbot sits alongside for kids to talk to while the pages are drawn.
Turns an operator's plain-English notes into the cheapest valid 24-hour campus energy plan
My entry for the BUP CSE Fest 2026 hackathon's Smart Campus Energy Optimization Challenge. A campus runs on solar panels, a battery and the grid, and operators leave notes like "keep at least 40% in the battery overnight". GridOptima reads those notes with a language model, checks every rule it extracts with deterministic guardrails, then solves for the minimum-cost hour-by-hour schedule and replays it to prove it's valid before answering.