Why we created Driver Tests?
Preparing for the Bosnian driving-theory exam was a fragmented experience of photocopied booklets, outdated PDFs, and legacy abandoned apps. The syllabus comprises 800+ questions covering first aid, traffic rules, signage, and tricky intersections— yet no central, up-to-date source existed.
At the end of 2021, Syncode set out to build an app that felt official, stayed current with regulation changes, and worked offline. We distilled the brief into three product laws:
01
Absolute parity with the real exam flow
The app mirrors the real test — same layout, questions, and timing — so exam day feels familiar.
02
Always free, offline-first, and auto-updating
Study anytime, even offline. New questions update instantly — no app store required.
03
Built for zero-stress learning
No logins, no clutter — just focused learning at your own pace.
Design & Engineering Highlights
React Native + Expo gives us a single codebase and over-the-air updates. When the government tweaks a exam question on Friday, learners wake up Saturday to fresh questions—no store download required.
All copy and UI are internationalised with i18n: English for tourists and international test-takers, Bosnian for locals. Locale assets swap in milliseconds.
We monetized it via RevenueCat and Google AdMob.
Client-Only App
Built in React Native with OTA support via Expo.
OTA Deployments
Pushes updates instantly without waiting on app store reviews.
Revenue Layer
AdMob & RevenueCat for subscriptions.
Analytics & Logs
Sentry and internal logging track all client-side behavior.
Runtime
TypeScript 5 • React Native
Core Libraries
Expo • React Navigation 6
Growth Toolkit
RevenueCat • AdMob • Sentry
Localization
English & Bosnian via i18next
App Growth
From launch to becoming the leading Bosnian driving theory app, growth was gradual and data-driven. Every new feature and iteration was based on analysis of real user behavior.
We didn’t pursue growth in a traditional way — we spent no money on advertising. The first ~5 000 users came exclusively through referrals, and very quickly we saw an organic effect: most driving schools in Bosnia and Herzegovina began independently recommending our app to their candidates.
By combining functionality, reliability, and ease of use, Driver Tests grew into the dominant choice among candidates — without spending a single penny on initial marketing.
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