Last updated: October 2026
AI tools can save you hours when you build apps. But the quality of the answer depends heavily on the quality of your prompt. A vague question like “fix my app” gets a vague answer. A clear, detailed prompt gets code and explanations you can actually use.
In this post, I’ve put together 50 ready-to-use prompts for Android (Kotlin/Java) and Flutter (Dart) developers. They cover learning, writing code, debugging, code review, UI, Firebase, testing, publishing, and AdMob. Just copy a prompt, replace the parts in [brackets], and paste it into ChatGPT (or any AI assistant you prefer).
How to Write a Good Developer Prompt
Every strong coding prompt includes these five parts:
- Role: who the AI should act as
- Context: your tools, versions, and what you already have
- Task: exactly what you want
- Constraints: libraries, architecture, style, things to avoid
- Output format: code only, step-by-step, with comments, and so on
Weak prompt:
Make a login screen in Flutter.Strong prompt:
Act as a senior Flutter developer. I'm using Flutter [version] with Dart null safety and Riverpod for state management. Create a login screen with email and password fields, validation, a loading state, and error messages. Use Material 3. Keep the UI code and the logic in separate files. Give me the complete code with short comments.The second prompt tells the AI who it is, what tools you use, what to build, and how to deliver it. That’s why it works so much better.
Before You Start: 4 Safety Rules
- Never paste secrets. Remove API keys, keystore passwords,
google-services.jsondetails, and private tokens from anything you share. - Test everything. AI code can look right and still be wrong or outdated. Run it, read it, and understand it before using it.
- Mention your versions. Android Studio, Kotlin, Flutter, and library versions change fast. Telling the AI your versions avoids outdated answers.
- Check official docs for anything important, such as security, billing, or policy.
A. Learning and Planning (Prompts 1–6)
1. Create a learning roadmap
Act as a senior [Android/Flutter] developer and mentor. I know [your current skills]. Create a 30-day roadmap to build and publish my first app. Include daily tasks, free resources, and one small project each week.2. Validate an app idea
I want to build an app that [describe idea] for [target users]. List the pros and cons, three similar existing apps, how mine could be different, and possible risks. Be honest and critical.3. Define an MVP
My app idea is [idea]. List the minimum features needed for a first version (MVP), then a list of features to add later. Keep the MVP buildable by one beginner developer in [number] weeks.4. Choose between Flutter and native Android
I want to build [type of app] and I know [skills]. Compare Flutter and native Android (Kotlin) for this project in a table covering performance, learning curve, UI flexibility, libraries, and long-term maintenance. Then recommend one and explain why.5. Explain a concept simply
Explain [concept, e.g., the Android Activity lifecycle / Flutter widget tree / coroutines] like I'm a beginner. Use a simple real-life analogy, then a short code example, then list three common mistakes.6. Plan the project structure
Suggest a clean folder structure for a [Flutter/Android] app with [features, e.g., login, home feed, profile] using [architecture, e.g., MVVM/Clean Architecture]. Explain what goes in each folder.B. Writing Code (Prompts 7–16)
7. Build a Jetpack Compose screen
Act as a senior Android developer. Create a Jetpack Compose screen for [describe screen]. Use Material 3, a ViewModel, and state hoisting. Add short comments and a preview function.8. Build a Flutter screen
Create a Flutter screen for [describe screen] using Material 3. Break the UI into small reusable widgets, use const constructors where possible, and add short comments.9. Show a list from an API
Write code for a [Compose LazyColumn / Flutter ListView] that shows a list of [items] loaded from this JSON: [paste sample JSON]. Include loading, empty, and error states.10. Make an API call
Show me how to fetch data from [API URL or sample JSON] using [Retrofit with Kotlin coroutines / Dio in Flutter]. Include the data model, error handling, and a repository class.11. Set up a local database
Create a [Room database for Android / sqflite or Drift for Flutter] setup for a [notes/tasks/expense] app. Include the entity, DAO or queries, and an example of insert, update, delete, and read.12. Save simple settings
Show how to save and read user settings like [dark mode, language, login status] using [DataStore / SharedPreferences / shared_preferences package]. Include a small example screen.13. Use ViewModel with state
Write a ViewModel for [feature] that exposes UI state using StateFlow, handles loading, success, and error, and survives screen rotation. Add a Compose screen that observes it.14. Manage state in Flutter
Convert this Flutter code to use [Provider/Riverpod/Bloc] for state management. Explain each change in simple words. Code: [paste code]15. Add navigation
Set up navigation between [list of screens] in [Jetpack Compose Navigation / Flutter using go_router]. Include passing an argument from one screen to another.16. Add dark mode and theming
Add light and dark themes to my [Android Compose / Flutter] app using Material 3, with a color scheme based on [primary color]. Include a toggle switch that remembers the user's choice.C. Debugging and Fixing Errors (Prompts 17–26)
17. Explain an error message
I'm getting this error in [Android Studio/Flutter]: [paste full error]. Explain what it means in simple words, the most likely causes, and the steps to fix it, starting with the most probable.18. Fix a Gradle build failure
My Android project fails to build with this Gradle error: [paste error]. My setup: Android Studio [version], Gradle [version], Android Gradle Plugin [version], Kotlin [version]. Explain the cause and give step-by-step fixes.19. Debug a crash using Logcat
My app crashes when I [describe action]. Here is the Logcat stack trace: [paste]. Here is the related code: [paste]. Explain the cause and show the fixed code.20. Fix a Flutter overflow error
I get "A RenderFlex overflowed" in Flutter on this screen: [paste widget code]. Explain why it happens and give me a fixed version that works on small screens too.21. Fix null safety problems
Help me fix these null safety errors in my [Kotlin/Dart] code: [paste errors and code]. Explain the safest approach for each one and avoid using unsafe null assertions.22. UI not updating
My [Compose/Flutter] UI doesn't update when [data] changes. Here is my code: [paste]. Explain why this happens and how to fix it using proper state handling.23. Find a memory leak
My Android app's memory keeps growing when I [describe action]. Here is the related code: [paste]. List the most likely causes of leaks and show how to fix them.24. Fix emulator or device problems
My [Android Emulator/physical device] shows this problem: [describe]. My system: [OS, RAM, Android Studio version]. List possible causes and step-by-step fixes, from the quickest to the most complex.25. Resolve a dependency conflict
I get this dependency version conflict: [paste error]. Here are my dependencies: [paste build.gradle or pubspec.yaml]. Tell me which versions are compatible and how to fix it.26. Works in debug but crashes in release
My app works in debug mode but crashes in the release build. I use [R8/ProGuard, Flutter release mode]. Give me a checklist of likely causes, such as missing keep rules and reflection issues, and how to find the real error.D. Code Review and Refactoring (Prompts 27–32)
27. Review my code
Act as a strict senior [Android/Flutter] code reviewer. Review this code for bugs, bad practices, performance issues, and readability: [paste code]. List the problems by priority and show improved code.28. Refactor to cleaner code
Refactor this code to be cleaner and easier to maintain without changing its behavior. Explain each change in one line: [paste code]29. Convert Java to Kotlin
Convert this Java code to idiomatic Kotlin. Use null safety, data classes, and extension functions where it makes sense. Explain any important differences: [paste code]30. Convert XML to Compose
Convert this Android XML layout to Jetpack Compose with the same look and behavior: [paste XML]. Keep it readable and use Material 3 components.31. Write comments and documentation
Add clear KDoc/Dart doc comments to this code and write a short README section explaining how it works: [paste code]. Don't change the logic.32. Check for security problems
Review this [Android/Flutter] code for security issues such as hardcoded secrets, insecure storage, unsafe network calls, and exposed data. List each issue and how to fix it: [paste code]E. UI and UX (Prompts 33–36)
33. Design a screen from a description
Design a modern Material 3 UI for a [type of screen] in [Compose/Flutter]. The style should be [clean/colorful/minimal]. Include spacing, typography, and colors, and explain your design choices.34. Improve accessibility
Review this UI code for accessibility. Check content descriptions, touch target sizes, color contrast, and screen reader support. Show an improved version: [paste code]35. Add animations
Add a smooth, simple animation to this [Compose/Flutter] screen for [action, e.g., button press, list item appearing]. Use built-in animation APIs and explain how it works: [paste code]36. Make the layout responsive
Make this [Compose/Flutter] layout work well on phones, foldables, and tablets. Use adaptive layouts and explain which breakpoints you chose: [paste code]F. Firebase and Backend (Prompts 37–40)
37. Add Firebase login
Give me step-by-step instructions and code to add Firebase Authentication with [email/password, Google Sign-In] to my [Android/Flutter] app. Include setup in the Firebase console, gradle or pubspec changes, and error handling.38. Plan a Firestore structure
Suggest a Firestore database structure for an app with [features]. Show collections, documents, example fields, and common queries. Explain how to keep reads and costs low.39. Add push notifications
Explain how to add Firebase Cloud Messaging push notifications to my [Android/Flutter] app. Cover permissions for the latest Android versions, notification channels, handling taps, and testing.40. Create mock JSON for testing
Create realistic sample JSON data for a [type of app] with [number] items, including fields like [list fields]. Also give me the matching [Kotlin/Dart] model classes.G. Testing and Performance (Prompts 41–44)
41. Write unit tests
Write unit tests for this [Kotlin/Dart] code using [JUnit and MockK / flutter_test and mocktail]. Cover normal cases, edge cases, and error cases: [paste code]42. Write UI tests
Write [Compose UI tests / Flutter widget tests] for this screen to check that [describe behavior] works: [paste code]. Explain how to run them.43. Improve performance
My [Android/Flutter] app is slow when [describe, e.g., scrolling a long list, opening a screen]. Here's the code: [paste]. List the likely causes and show specific optimizations.44. Reduce app size
My [APK/AAB] is [size] MB. List practical ways to reduce the size of a [Android/Flutter] app, such as shrinking, resource optimization, image formats, and splitting by ABI. Give the exact settings or commands.H. Publishing and Monetization (Prompts 45–50)
45. Write a Play Store listing
Write a Google Play Store listing for my app [name] that [what it does]. Include a short description (80 characters max), a full description with natural keywords, and 5 key feature bullets. Keep it honest and don't promise anything the app doesn't do.46. Draft an app privacy policy
Draft a simple privacy policy for my Android app [name] that uses [Firebase Auth, AdMob, analytics, camera, etc.]. Explain what data is collected and why. Keep it in plain English. I will review it with a professional before publishing.47. Create a pre-release checklist
Create a detailed pre-release checklist for publishing a [Android/Flutter] app on Google Play. Cover signing the release build, testing, store listing, content rating, data safety form, target API level, and policy checks.48. Integrate AdMob
Give me step-by-step instructions and code to add AdMob [banner/interstitial/rewarded] ads to my [Android/Flutter] app. Use test ad IDs, include consent handling for users in regions that require it, and explain how to switch to real ad units safely.49. Check my app against ad policies
My app is a [type of app] with ads placed [describe placement]. Based on AdMob policies, list anything that could be a policy risk, such as accidental clicks, ad placement, or content issues, and suggest safer alternatives. I will confirm with the official policy pages.50. Write release notes and reply to reviews
Write short, friendly release notes for version [number] of my app with these changes: [list]. Then write polite replies to these user reviews: [paste reviews]. Keep them professional and helpful.How to Get Better Results from AI Coding Prompts
- Give your versions. “Android Studio [version], Kotlin [version], Flutter [version]” prevents outdated code.
- Paste the full error. Not a summary, the exact message and stack trace.
- Ask for explanations. Add “explain each step in simple words” so you learn, not just copy.
- Go step by step. For big features, ask for one part at a time.
- Ask follow-ups. If the answer isn’t right, tell the AI what happened when you ran it.
- Say what to avoid. For example, “don’t use deprecated APIs” or “don’t add extra libraries.”
- Save your best prompts. Keep a personal prompt library in a notes app.
Common Mistakes to Avoid
- Copy-pasting without understanding. You’ll struggle later when something breaks.
- Sharing private keys or credentials.
- Trusting policy or legal answers blindly. Always check official documentation.
- Writing one huge prompt for a whole app. Break big tasks into smaller steps.
- Not testing on a real device. Emulators don’t catch everything.
Frequently Asked Questions
Do these prompts work with other AI tools?
Yes. They work with ChatGPT, Claude, Gemini, and other AI assistants. Results may vary slightly between tools.
Are these prompts only for beginners?
No. Beginners can use them to learn, and experienced developers can use them to save time on repetitive work.
Can AI replace a developer?
No. AI is a helpful assistant, but you still need to understand code, test it, and make design decisions.
Is AI-generated code safe to use in my app?
Only after you review and test it. Check security, licenses, and compatibility yourself.
Which is better for beginners, Android (Kotlin) or Flutter?
It depends on your goals. Prompt #4 helps you compare them for your specific project.
Final Thoughts
AI won’t build your app for you, but a good prompt can make you a much faster developer. Use these 50 prompts as a starting point, adapt them to your projects, and always test and understand what you ship.
If this was useful, check my other guides on How to Install Android Studio and Create Your First App and How to Add AdMob Banner and Interstitial Ads. Have a prompt suggestion? Send it through my Contact page.
Disclaimer: AI-generated code and advice can contain mistakes. Always test code and verify important information with official documentation. This article is for educational purposes only.
