Download on the App StorePlatforms
One core, iOS and web
- The lesson engine is written once, shared by both apps
- The build blocks anything that would bloat the phone app
- Subscriptions on both: App Store and Stripe
Case · Consumer app · iOS + web
Mazaaal
Learn Judaism step by step, ten minutes a day.
- For people preparing the conversion exam of the Paris Consistory
- Short lessons, a study path, a daily streak
- Designed, built and shipped by one person
★★★★★ 5.0 on the App Store · live since Sep 3, 2026
100+users
5.0App Store rating
575kwords of lessons, checked before release
14exercise formats
849illustrations made for the app
The product
What to learn, and in which order.
The official syllabus, cut into ten-minute lessons. The learner walks a path, one step at a time.
The path
Ten-minute lessons, unlocked in order.
Study sheets
Every tested fact is written here first.
The game
Short drills that make it stick.
Real situations
Answer a Friday night invitation.
Every week
The weekly parasha, as a story.
The execution
What made it hard to build.
Feel
Haptics, sound, motion
- Haptic feedback on native, synthesized sound on web
- Animated path, cards and transitions
- Never blocking: feedback is a bonus, not a gate
Languages
French, English, and Hebrew
- Lessons written in French, with an English version
- Hebrew letters and vowel marks rendered right
- A glossary: tap any term to see it explained
Content
575k words, zero broken lesson
- Lessons live as text files, reviewed like code
- Validators stop the build on a malformed lesson
- Each syllabus topic checked against sources first
On the phone
Reminders and a home-screen widget.
- A native iOS widget, written in Swift, shows the streak
- It changes with the learner's day: on track, at risk, milestone
- Reminders are scheduled on the device, around the Jewish calendar
Thursday 18 September9:41
Try it
Play the first lesson, no account needed.
The reward
Finish a branch, win its card.
Eleven collectible cards, one per branch of the syllabus, drawn for the app.
Quick facts
The details.
Next.jsExpo · React NativeSwift (widget)TypeScriptPostgreSQLStripeRevenueCatReanimatedClaude Code
Figures measured in the repository on Sep 30, 2026. Rating: App Store, Sep 30, 2026 (5 ratings).
- Sep 3Live on the App Store in 2026, and on the web at mazaaal.com.
- 62syllabus topics mapped against sources before a single lesson was written.
- 26hand-drawn letters, compiled into the app's own font.
- 2 → 1platforms, iOS and web, running one shared core.
- 1person: product, design direction, code, content pipeline, release.