App Studio · building in the open

Apps that respect you.

Buko Labs makes honest, offline-first apps that respect your privacy and your time — and shares how they're built, in the open.

What we build

Focused tools, each solving one problem well — no bloat, no dark patterns.

A private, offline-first vault for passwords, 2FA codes, notes, and files. No account, no cloud, zero-knowledge — only you can open it.

A fast, no-nonsense document scanner. Capture, crop, and export clean PDFs right from your phone.

Train your ear and eye for Japanese numbers — counters, prices, dates — with quick, repeatable drills.

Master Japanese verb and adjective conjugation — te-form, past, negative, potential, and more — with quick, repeatable drills.

A few principles that show up in everything we ship.

No tracking, no analytics SDKs, no ads. Your data stays on your device unless you decide otherwise.

Our apps work without a connection. The network is a feature you opt into, never a dependency.

Export anytime, in open formats. No lock-in, no hostage-taking, no vendor cloud you can't leave.

We document the journey — the wins, the dead ends, and the trade-offs — on the blog.