Dropp rebuilt one of Iran’s largest and longest-running health and nutrition applications with React Native in three months, delivering Android, iOS, and PWA from a shared codebase.
Discuss Your SystemThis case study covers one of Iran’s best-known and longest-running digital health and nutrition applications. With more than two million installs on Cafe Bazaar and over one million downloads on Google Play, the product supports users across calorie tracking, personalized diets, and everyday wellness management.
In three months, Dropp completely rebuilt the application with React Native and delivered Android, iOS, and Progressive Web App experiences from a shared codebase. Following testing and release, the new product entered production and is now used by its live customer base.
Dropp’s responsibility focused on complete client-application development, quality assurance, and release management. The client’s internal engineering team owned and supplied the backend and APIs.
The client previously maintained independent Android and iOS applications built with Kotlin and Swift. Both applications were stable products backed by more than a decade of continuous development, so this was not a rescue project for an unreliable system.
The strategic challenge was preparing the product for its next stage. Maintaining two separate codebases increased development and coordination costs, while the company also needed a PWA. Continuing with the existing model could have created a third independent development track, requiring every capability and change to be implemented, tested, and released multiple times.
The product team used the PWA initiative as an opportunity to consolidate its client technology and move all three platforms to React Native.
Moving from Kotlin and Swift to React Native required a complete rebuild rather than an incremental migration. The previous native code could not simply be transferred into the new architecture.
The client supplied the UI/UX and product design, while Dropp turned those designs into a production-ready cross-platform product. The new foundation allows Android, iOS, and PWA experiences to share core implementation, helping future features evolve more consistently across platforms.
Throughout the project, Dropp’s mobile team integrated with the client’s existing APIs under a clear ownership model: the client retained responsibility for backend engineering and product design, while Dropp owned application development, QA, and release preparation.
The engagement went far beyond moving a set of screens to a new framework. It rebuilt product journeys directly connected to daily usage and the client’s commercial model.
The delivered scope included calorie and nutrition tracking, personalized diet plans, daily meal logging, subscription management, and payment flows.
Each journey needed to behave consistently and reliably across Android, iOS, and the PWA. Dropp translated the client’s product designs into three user-facing outputs while keeping the shared product logic and implementation aligned within one codebase.
A complete rebuild for a widely used product required careful validation of every essential journey. The quality assurance process included manual testing, regression testing, and validation across different devices and platforms.
The delivery team included two React Native developers, a part-time QA specialist, and technical oversight from a tech lead. QA covered critical flows such as meal logging, diet access, subscriptions, and payments across release builds.
Dropp also owned release management. The final applications were prepared and published through Cafe Bazaar, Myket, App Store, and other required distribution channels, while the PWA was deployed to production for live users.
The project combined a complete technology transition, three user-facing outputs, critical payment and subscription journeys, multi-device testing, and release management within a three-month delivery window.
Dropp maintained a focused development and QA cycle throughout the engagement and completed the React Native rebuild on schedule. The Android and iOS applications and the PWA passed quality checks, entered production, and became the live experience used by the client’s customers.
The project replaced three potential development paths with a shared technical foundation. The client can now evolve its mobile and web experiences more consistently without maintaining three independent client codebases.
Key outcomes included:
• Complete application rebuild in three months • Android, iOS, and PWA delivery from a shared codebase • Full transition from Kotlin and Swift to React Native • Delivery of calorie tracking, diets, meal logging, subscriptions, and payments • Validation across multiple devices and platforms • Publication through Cafe Bazaar, Myket, App Store, and required channels • Successful production deployment of all three experiences
The client’s confidence in Dropp’s delivery led the relationship to expand before the initial engagement was even complete. Midway through the application rebuild, the company also entrusted the DevOps and infrastructure operations of its digital health products to Dropp Tempo, an engagement that continues today.
Following delivery of the first application, Dropp began developing another product in the women’s health sector, including its application and parts of its backend.
The relationship demonstrates how successful product delivery can become the foundation of a broader technical partnership spanning application development, backend engineering, infrastructure, DevOps, and production operations.
Supporting Android, iOS, and the web should not automatically require three teams, three codebases, and three disconnected delivery processes. With the right architecture and an integrated development, QA, and release team, businesses can reach production faster while keeping future product development manageable.
If you are planning to modernize an established application, build a cross-platform product, or launch Android, iOS, and PWA experiences together, Dropp can own the delivery journey from technical planning through production release. Start with a product and architecture review session.