Desk Clock · nightstand clock
Turn a spare phone into a calm bedside clock — large display, alarms, battery-friendly dark mode.
Indie mobile app studio · made in India
Trei builds calm, focused mobile apps for the everyday — family, pets, relationships, and the small things that add up. No bloat, no tracking theatre, no noise.
Each one solves a single problem, then gets out of the way.
Turn a spare phone into a calm bedside clock — large display, alarms, battery-friendly dark mode.
Expense tracking from bank SMS, HRA rent receipt PDFs, and bill splitting.
Minimal Android launcher focused on simple navigation and essential apps.
Locate, ring and keep tabs on your own devices with consent-based, privacy-first tracking.
Live family map, SOS alerts, battery status, and consent-based location sharing for India.
A fast, clutter-free PDF and EPUB reader. Organize your library and read fully offline.
A calm, brain-teasing puzzle: slide every arrow off the board in the right order.
A fast reflex game: tap the glowing target before time runs out and chase a higher best score.
A keyboard built for developers — fast symbol and bracket access, snippets and a clean, distraction-free layout. Native Android IME with an iOS extension.
Turn a spare rooted 5G phone into an always-on, self-healing Wi-Fi hotspot — auto-start, watchdog, hourly reset.
Free online reader that speaks any markdown file aloud with natural voices and live sentence highlighting. GitHub READMEs, file uploads, no signup.
The Trei merch store — developer tees, hoodies and 3D prints. Wear the brand.
Free tools, screeners and explainers for Indian retail investors.
An 18-topic DSA interview roadmap as an interactive terminal — Blind 75, LeetCode 150 & 250.
A terminal-style DSA practice workspace with a full roadmap and an in-browser Kotlin judge.
Trei is a one-person studio, on purpose. Every app here is built, shipped, and supported by the same hands — fewer apps, slower launches, and more care per pixel.
No third-party trackers, no ad networks, no data resale. The analytics we keep are the ones that help us fix bugs.
No streaks to protect, no red badges, no manufactured urgency. Each app opens, does its job, and gets out of the way.
The same person writes the code, designs the screens, and answers the support email. Consistent opinions, all the way down.
Offline-first, battery-conscious, and tested on modest hardware. The apps don't assume you bought a phone this year.