GuiMahSTUDIO

Case study — Flewi

Flewi Flashcards that stick.

Live spaced-repetition platform on iOS, Android and the web. Started with German — now Spaces, Smart Add and multi-language learning.

Our role Product, design, mobile, API, infra
Status Live — App Store & flewi.app
Platforms iOS, Android, PWA
Next Web parity · Flashcard Master
View on the App Store Open flewi.app All projects

Peek at what’s coming

Flewi Spaces — German, Arabic, Italian, Turkish, French
Spaces — DE, AR, IT, TR, FR
Flewi Today’s Plan — Learn, Review, Article Test
Today’s Plan
Flewi Smart Add
Smart Add
Flewi Artikel Practice — French
Artikel — le / la / les
Flewi Review Session
Review Session

01 — Why

One pain. Then a platform.

German gender and plurals are where learners quit. Flewi started there — custom SRS, Artikel practice, auto-parsed cards — then grew into Spaces and multi-language learning without rebuilding the core.

02 — The gap

Anki depth. Native feel. Nothing in between.

Anki

Serious SRS. Brutal UX. Build every card by hand.

Duolingo

Great loops. Shallow depth. No real user decks.

Quizlet

Easy sharing. Generic cards. No grammar parsing.

03 — Stack

Self-hosted. Boring on purpose.

Web

React · Vite · Tailwind · PWA

Mobile

Expo / React Native — product source of truth

Backend

FastAPI · PostgreSQL · Redis

Infra

Docker · Caddy · Hetzner

Your product next

We can take yours this far too.

Idea to App Store — same two people you’d talk to. Tell us what you’re building.

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