I’m ready to turn my concept for an Android-based educational app into a working product and need an experienced mobile developer to guide it from idea to Google Play. The core goal is a clean, engaging learning experience that feels at home on modern Android devices. Scope • Refine the learning flow with me, translate the wireframes (or help me create them) into a smooth material-design UI. • Build the full Android application in Kotlin or Java, targeting at least Android 9 and up. • Implement standard education-app features such as progress tracking, multimedia lesson content, quizzes, and local/remote data storage—how we tackle each of these will depend on what you recommend after our first planning call. • Prepare a signed, Play-Store-ready APK/AAB plus full, well-commented source code in Git. Acceptance criteria 1. The app installs and launches without errors on physical devices and emulators running Android 9+. 2. All agreed-upon screens function as documented, with no critical crashes. 3. Code passes lint checks and compiles from a clean clone. 4. I can follow a short, plain-language README to reproduce a release build. Communication via English or Bahasa Indonesia is fine, and I’m available most evenings (GMT+7) for check-ins. Let me know your preferred tech stack, any relevant educational apps you’ve shipped, and an estimated timeline so we can get started.