
Waris
Level 1
Flutter Developer, RevenueCat, AppsFlyer and AI App Specialist
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Werkervaring
Flutter Keyboard App Developer
Fiverr Client Project • Fulltime
Dec 2025 - Feb 2026 • 2 mos
I developed a custom iOS keyboard application for a Fiverr client that works independently as a system-level keyboard. The keyboard was designed to be fast, stable, and user-friendly, allowing users to switch to it seamlessly across different apps. The application was built using Flutter for the main app experience and Swift for native iOS keyboard extension integration, ensuring proper performance and Apple platform compatibility. The keyboard includes AI-powered features such as grammar correction, text rephrasing, sentence rewriting, email writing assistance, and personalized text suggestions to improve user productivity. I handled the complete development process including keyboard UI design, native iOS integration, Flutter–Swift communication, performance optimization, and testing. The final solution was delivered as a production-ready app with a scalable architecture suitable for future feature expansion.
Mobile Analytics, Attribution & Monetization Specialist
Fiverr • Freelance
Dec 2024 - Jul 2025 • 7 mos
Implemented AppsFlyer, Google Tag Manager (GTM), and RevenueCat for a Saudi-based company across 3 production mobile apps built with Flutter. Set up complete mobile attribution and event tracking using AppsFlyer, including installs, in-app events, conversions, and campaign performance. Configured GTM containers to manage analytics events efficiently without frequent app releases. Deployed RevenueCat to handle in-app purchases and subscriptions, including product setup, entitlements, offerings, and paywall logic for both iOS and Android. Ensured accurate subscription status syncing, renewal handling, and purchase validation. Worked closely with Firebase Analytics to validate events, debug tracking issues, and ensure clean, reliable data for marketing and monetization decisions.
13 Reviews
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roryd1982
Terugkerende klant

Zuid-Afrika
The seller really did a great job on this project. The setup was not your traditional setup through GTM and he delivered!

gamesboard

Marokko
I’m really happy with the final result and the overall experience. The app was delivered successfully, approved by Apple, and published on the App Store without issues. Communication was clear, and all concerns were handled professionally. Highly recommended.
Reactie van de freelancer
blakehoward27

Verenigde Staten
did exactly as needed, would 100% work again with them. if you need any help with your vcibe code app, waris is the man with a plan!
anro06

Roemenië
Waris is very professional, thanks a lot

oraneellington
Terugkerende klant

Verenigde Staten
He did excellent work and was very helpful and informative. I will definitely keep working with him long term
