Pico Compiler is a lightweight development environment for writing Java programs.

Key features:

• Java 9 offline compiler

• Developer keyboard - Developer keyboard adds a new row of keys to the default on-screen keyboard. It consists of swipe buttons with all common symbols, punctuation and brackets, and a special navigation key.

• Smart code completion - Pico will complete the names of classes, methods, fields, and keywords within the visibility scope. When you invoke code completion, Pico Compiler analyses the context and suggests the choices that are reachable from the current position of the caret.

• Black UI theme - protect your eyes with the dark theme.

The app is designed as an educational tool and cannot be used to develop complex projects (Spring, Hibernate, Java EE etc). Visit project website at to learn all Pico features and limitations.

Java is registered trademark of Oracle and/or its affiliates.
The Pico Compiler project is not affiliated with Oracle.

What's New

Version 2.0.2

• Bug fixing

Ratings and Reviews

Java 7 and Connor edit source in this free version

A Java Developer

Java 7 only, so you cannot use lambdas, for example. You cannot modify the code in this free version. You have to buy the pro version.

Developer Response

From version 2.0 you have Java 9 and you can use lambda.Yes, the app is paid, but is this $1 so expensive?


Marcin Olawski
92.8 MB
Requires iOS 11.0 or later. Compatible with iPhone, iPad and iPod touch.
English, French, German, Italian, Japanese, Polish, Russian, Simplified Chinese, Spanish, Turkish
Age Rating
Rated 4+
© 2018 Marcin Olawski
In-App Purchases
  1. Pro 9 version 3,49 €
  2. Pro version 2,29 €


  • Family Sharing

    Up to six family members will be able to use this app with Family Sharing enabled.

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