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ConvertiX – React Native Expo Unit Currency Converter | iOS Android | i18n | AdMob | TypeScript
ConvertiX is a beautifully designed, production-ready unit and currency converter app built with React Native + Expo + TypeScript . 15+ conversion categories, 170+ live currencies, 8 fully translated languages with complete RTL support, …
Customer Rating
4.6/5 From 61 verified buyersSales
1,761+ Trusted by businesses worldwideSetup Time
< 5 min From download to liveBuilt to Scale & Convert
ConvertiX is a beautifully designed, production-ready unit and currency converter app built with React Native + Expo + TypeScript . 15+ conversion categories, 170+ live currencies, 8 fully translated languages with complete RTL support, AdMob, RevenueCat IAP, and full favorites & history — all offline. Ship your own converter app to Google Play and App Store in hours, not weeks.
Unit Conversion
✅ 15+ categories: Length, Weight, Temperature, Area, Volume, Speed, Time, Data Storage, Pressure, Energy, Angle, Frequency, Fuel Economy & Cooking
✅ Instant real-time conversion as you type
✅ High-precision results across all categories
✅ Works 100% offline — no internet required
Live Currency Converter
✅ 170+ world currencies supported
✅ Real-time exchange rates fetched automatically
✅ Cached rates for full offline functionality
✅ Includes USD, EUR, GBP, PKR, AED, SAR, CNY, INR and more
8 Languages + Full RTL Support
✅ English, Spanish, Urdu, Sindhi, Hindi, Arabic, Chinese, Bengali
✅ Full right-to-left layout for Arabic and Urdu
✅ Auto-detects device language on first launch
✅ Easy to add new languages — copy one JSON file, register, done
◑ Dark / Light / System Theme
✅ Three theme modes built in
✅ Follows device setting automatically
✅ User can override and lock their preference
✅ Designed to look premium in both modes
⭐ Favorites & History
✅ Pin conversion pairs as favorites for one-tap access
✅ Full conversion history with automatic date grouping
✅ All data stored locally — never sent to any server
▶ AdMob Integration
✅ Banner and interstitial ads pre-wired
✅ Enable globally with a single config flag: enableAds: true
✅ Interstitial frequency configurable (default: every 5 conversions)
✅ Test ad IDs used automatically in development
$ RevenueCat In-App Purchases
✅ RevenueCat SDK fully integrated
✅ Ready for subscriptions, one-time purchases, or premium unlocks
✅ Enable premium features with a single config flag
✅ Payment handled entirely by Apple / Google
Privacy First — 100% On-Device
✅ All user data stored locally using MMKV (fastest RN storage)
✅ No account required. No login. No server. No tracking.
✅ Users can wipe all data from Settings at any time
————————————————————
What’s Included
✅ Full React Native + Expo source code
✅ TypeScript throughout — clean, maintainable architecture
✅ 8 locale JSON files (EN, ES, UR, SD, HI, AR, ZH, BN)
✅ HTML documentation with step-by-step setup guide
✅ AdMob pre-wired (banner + interstitial)
✅ RevenueCat IAP integration
✅ Expo Router navigation setup
✅ MMKV on-device storage layer
✅ Dark / Light / System theme system
✅ Favorites & history screens
✅ Settings screen with language picker and theme toggle
✅ Live currency rate fetching hook (useCurrency)
✅ Privacy policy & terms pages included
————————————————————
Tech Stack
⚡ React Native 0.81
⚡ Expo SDK (Expo Router)
⚡ TypeScript
⚡ MMKV Storage
⚡ i18next + react-i18next
⚡ React Native Google Mobile Ads (AdMob)
⚡ RevenueCat
⚡ React Navigation
From Purchase to Launch in 4 Simple Steps
Get up and running in minutes — no fluff, no waiting around.
Purchase Securely
Complete checkout via Razorpay-secured payment.
Instant Download
Files are available immediately in your account.
Quick Setup
Follow the included docs — usually under 5 minutes.
Launch & Grow
Customize, deploy, and scale to your audience.
What Buyers Are Saying
Based on 61 verified reviews
"Excellent quality and instant delivery. The documentation is super clear and setup was a breeze. Highly recommend!"
"Perfect for our use case. Saved us weeks of development time. Support team responded within an hour."
"Clean code, easy to customize. Worth every rupee. Looking forward to future updates."
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Join 1,761+ customers who trust this product to power their business.