Run Ruby on Android — On-Device and Offline

Ruby is a joy to write and, until now, awkward to run on a phone. PocketCode fixes that by bundling a real Ruby interpreter inside the app and running your .rb files on the device — offline, with nothing to install.

Real Ruby, running locally

This is a genuine Ruby interpreter, not a lookalike. Open a .rb file, tap Run, and Ruby executes on your device:

• The expressive core you actually use — blocks, iterators, puts, string methods, ranges, hashes, symbols — behaves as Ruby should.
• Output and errors stream into a proper console.
• It runs with no connection, and nothing leaves the device.

What it's great for

• Learning and practicing Ruby — follow a tutorial, drill exercises, test an idea on the spot.
• Scripting — quick text processing, data munging, small automations.
• Prototyping logic — sketch a method or a small class and run it immediately.

Around it you get the editor's autocomplete, navigation and on-device formatting, plus a programming symbol bar so Ruby's punctuation isn't a fight with the phone keyboard.

The honest limits

• Standard-library Ruby, run locally. It's for running your own scripts, not a gem-install workflow — think Ruby without a package round-trip.
• Interpreter speed on a phone. Great for scripts and exercises; heavy compute will trail a desktop.
• Not a Rails server. It runs the language for scripting and learning, not a full web-app stack.

Within those lines, it's real Ruby, in your pocket.

One of many

Ruby is one of five languages bundled and ready offline the moment you install — alongside Python, JavaScript, C and PHP — with half a dozen more as optional packs. See the full lineup.

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Your phone runs real Ruby — offline, private, instant.

PocketCode is heading to Google Play. Join the pre-registration to run it on your own device.