Modularization helps keep your app organized by splitting code into smaller parts called modules. This can improve build speed because only changed modules need rebuilding. At runtime, modular apps can load features on demand, reducing memory use and improving battery life. However, if modules are too many or poorly designed, it can cause extra overhead in app startup and navigation.
To keep your app smooth at 60 frames per second, design modules to load asynchronously when possible. Avoid heavy work on the main thread during module initialization. Use lazy loading for features not immediately needed. Keep module dependencies clear and minimal to prevent delays. Also, use ProGuard or R8 to remove unused code across modules.
Modularization can reduce initial app size by separating features into modules that can be downloaded later (dynamic feature modules). This lowers the app's startup time and download size. However, adding many modules increases the total app size and complexity. Properly balancing core and feature modules helps keep startup fast and bundle size manageable.
Android supports modularization natively with Gradle modules and dynamic feature modules for on-demand delivery. iOS uses frameworks and Swift packages for modularization but does not have built-in dynamic feature delivery like Android. Android apps require careful management of module dependencies and manifest merging. iOS apps rely more on static linking and framework embedding.
It is likely that modules are loading synchronously on the main thread, blocking the UI. Another cause could be too many dependencies between modules causing delays. Also, large modules without lazy loading can increase startup time. Review your modularization to load features asynchronously and minimize inter-module dependencies.