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Case study Health & Wellness Development Product Growth
2025

Migration from UIKit to Swift UI for a journalling app with over 800.000 downloads

99,5%

Crush Free Rate

131%

LTV increase

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Challenge

The client was looking for a partner agency that could take over all of the growth of the mobile application, which had thousands of users by that time.

One of the growth bottlenecks was an insufficient development approach and poor customer support.

Solution

1. Planning

The primary goal was to set up a development team quickly and ensure the quality of customer support.

‍Applica set up three development directions: iOS, Android, and Backend development. Right after that, Applica fixed the main bugs that caused huge revenue drops and all minor fixes.

2. Execution

Once the first phase was over, Applica reviewed and updated the roadmap for the application to guarantee at least 60% YoY revenue growth.

Applica connected the product and marketing teams, collaborating closely with the development team to ensure growth speed and efficiency.

Results

The crash-free percentage of users on Android went from 82.5% to 98.5% within the first 90 days of cooperation—similar to the success on iOS. Integrated a new Design System, which saves time for development and a/b testing.

After the development team integrated new activation (onboarding) and monetization (paywall structure) flows, LTV jumped 43%, which brought about $174,000 of additional Revenue.

The app was rewritten from UIKit to SwiftUI, a more modern technology. 131% LTV increase during the app season.

131%

Revenue increase

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