We build phone apps in React Native: one codebase for Android and iOS, with native Kotlin only where a platform API needs it, and every phone app we have built so far is React Native. Trainr, a UAE fitness marketplace, and LetSlic, a social app, are live on Google Play, with their iOS builds on TestFlight rather than the App Store. Pakka's customer and driver apps are being prepared for Google Play, LeafRanger runs as a signed production Android build, and Temphera is built but not released.
Google Play requires its own billing for digital subscriptions sold in an app, so LetSlic's Premium is built on Play Billing via RevenueCat. LeafRanger replaced RevenueCat with our own Kotlin module over Play Billing Library 9.1.0, behind the purchases wrapper its screens already called. Pakka's driver plans, which the stores could read as a digital feature, are paid from the driver's wallet instead of by card.
In LetSlic every socket a person opens joins a personal room, so a new message lands on the chat list and in the open thread on each of their devices, and the last-active time is stored so a chat header shows a status before live presence arrives.
Trainr's release builds strip 540 console calls while keeping errors and warnings for Sentry, upload source maps so crashes are readable, and carry native libraries for arm64-v8a and armeabi-v7a only. Before the live-payments build we checked the shape of every key and caught a Stripe secret pasted into the Google Places field, where it would have been readable in every installed copy.
Trainr's iOS uploads had failed since 25 May with a signing error that looked like a permissions problem. The App Store Connect record had always been fit.trainr.mobile and a brand rename had changed the identifier, so we reverted it, added the six privacy purpose strings Apple required, and build 22 reached TestFlight. Like LetSlic's, Trainr's iOS app is on TestFlight, not the App Store.
FeaturedTrainr is a two-sided fitness marketplace for the UAE. We built the React Native app for clients and trainers, two Node.js backends and the admin console: bookings, packages, Stripe payments and payouts, workouts, diet plans, check-ins and chat. The Android app is live on Google Play.
FeaturedLetSlic, listed on Google Play as Slic, is a social app for photo posts, 24-hour stories and real-time chat with group moderation. We built it for Slic Solutions Private Limited: the React Native app, two Node.js APIs, the superadmin console and the website, plus Premium and ads.
FeaturedPakka Logistics is a Porter-style delivery platform for India. We built all of it: Android apps for customers and drivers, a business portal, an operations console and the website. The web platform is live; the Android apps are being prepared for Google Play.
FeaturedLaunchingLeafRanger is CountryDevs' own AI plant-care app. We built the Android and iOS app, two Node.js backends, the admin and vendor consoles and leafranger.com: photo plant ID and diagnosis, light-mapped rooms, weather-aware watering and a multi-vendor plant shop.
BuiltTemphera is a journal-planner app for individuals and couples, built by CountryDevs: journal, moods, habits, goals and money in one React Native app, plus an admin console that lets staff run support and moderation without reading what users write.
FeaturedMedtrakr is pharmacy operations software we built for UK pharmacies: a pharmacy system plus driver, pharmacy and patient apps that cover repeat prescriptions, prescription deliveries, Scan to Shelf collections and consultation booking.
The way store testers do. For Pakka's customer and driver apps we click-tested and break-tested both, screen by screen, on an Android 16 emulator: back gestures, killing the app mid-flow, double taps on submit, airplane mode and a stopped server. All 28 defects logged were fixed before release builds 1.0.13 and 1.0.14 were cut.
The camera and photos (LeafRanger reads a spot's light from a photo; LetSlic compresses photos and converts HEIC, HEIF and WebP to JPEG before upload), live GPS and photo proof of delivery in MedTrakr's driver app, barcode scanning in its pharmacy app, phone OTP sign-in in LetSlic, and push notifications through Firebase Cloud Messaging.
Yes, if consent comes first. LetSlic shows AdMob native ads styled like posts after every fifth post on Android, runs Google's consent form before the ads SDK starts, and treats anyone under 18, or without a date of birth, as a minor who sees only G-rated ads.
We check the built file, not the build log. One Pakka build said BUILD SUCCESSFUL but still pointed at the build laptop, because Metro had cached the bundle. A verifier now reads the API address out of every APK and checks its signing certificate, and each APK is recorded with its git tag, commit and sha256.
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