Java Kotlin IDE & Compiler

NanoIDE is an offline Java and Kotlin IDE for Android that lets you write, compile, debug, and run code directly on your phone or tablet. Now with Android Basic Activity project support, you can create, edit, build, and generate APKs for basic Android applications without a laptop, cloud IDE, or manual JDK installation.

Whether you're learning programming, practicing coding, preparing for interviews, building Android apps, or prototyping ideas, NanoIDE delivers a fast, lightweight, and mobile-first development experience.

Why developers and students choose NanoIDE

• Offline Java compiler and Kotlin compiler

• Build Android Basic Activity projects and generate APKs

• Built-in debugger with step-by-step debugging

• Smart code editor with syntax highlighting, auto-completion, and code suggestions

• AI coding assistant to generate and improve code

• Git integration for version control and project management

• File and folder explorer for managing projects

• DSA tutorials with runnable examples

• Optimized for low-memory Android devices

• Designed for phones and tablets

Build Android apps on your phone

Create Android Basic Activity projects, write Java or Kotlin code, build APKs, and test your applications directly on your Android device. NanoIDE provides a lightweight mobile development environment for learning Android development and building simple Android applications without a desktop computer.

Code and debug anywhere

Write and execute Java and Kotlin programs using the built-in offline compiler. Debug applications with breakpoints, inspect variables, and trace program execution to identify and fix issues quickly.

Learn Java, Kotlin, Android, and DSA

Explore interactive tutorials and runnable examples for Java, Kotlin, Android development, and Data Structures & Algorithms. Modify sample code instantly and see results in real time to improve your programming skills.

Real mobile development workflow

Create projects, organize files, edit source code, manage Git repositories, and build lightweight Android applications directly from your phone or tablet. NanoIDE brings a real coding workflow to Android.

Perfect for

• Java programming

• Kotlin programming

• Android app development

• Android Basic Activity projects

• APK building on Android

• Offline Java compiler

• Offline Kotlin compiler

• Android coding practice

• DSA learning and interview preparation

• Competitive programming

• Student programming projects

• Mobile software development

• Quick prototyping and testing

Note: Android APK building currently supports Basic Activity projects. Support for advanced Android Gradle projects, Jetpack Compose projects, and complex multi-module applications is under active development.