EvanBuilder, 16egreszcz@gmail.comThe full story on evandev.blog ↗
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Biro

Role
Design & engineering
Platform
iOS
Years
2026—
Status
Heading to TestFlight

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About Biro ↓

About

The GCSE revision app I wish I’d had.

Biro marks your answers the way an examiner would, then shows you what you missed. The order of topics rebuilds itself around whatever you keep dropping marks on, rather than marching everyone through the same list.

It pays you back in collectable cards, a binder to fill and a market where you haggle with a bot, and rewards are checked by the server so they can’t be faked. It’s built for under-16s from the ground up: filtered, private, with a named adult for safeguarding.

Expo · React Native · TypeScript · Convex · Clerk · RevenueCat

1,147
commits since May
5
months in

As of 30 Oct 2026

The deep diveHow Biro works, feature by feature, and how it got here.Read it on evandev.blog ↗

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