Three small Android apps. A sudoku-solving alarm clock, a math card game, and a loan calculator that solves for any unknown. Free, offline, no signup.
Explore the collection ↗Each app solves one problem completely. No dashboards, no upsells, no second tab you didn't ask for. Open it, use it, close it.
No ads. No streak guilt. No notifications begging for return visits. Made to be useful — not to keep you coming back.
Editorial typography. Restrained palettes. No anxious red badges. Tools that sit beside your day, not in front of it.
Wake up by solving a sudoku.
An alarm clock that asks for a single cell before it stops ringing. Scan the puzzle from a newspaper, type one in, or pick the daily — then practise techniques (Naked Singles, X-Wing, and beyond) in the trainer.
Mental math as a card game.
Five-minute brain workouts disguised as a card puzzle. Build expressions from the cards you draw to land exactly on the target. Four difficulty tiers, nine themes, a daily streak — without the "educational software" feel.
A loan calculator that solves for any field.
Leave any one of amount, rate, tenure, or EMI blank — LoanLab works out the rest. Compare paying down a loan against an SIP, model prepayments, and export the full amortization schedule.