Run Code in a Dozen Languages on Android — On-Device & Offline

Most ways to "run code" on a phone quietly send it somewhere else — a cloud runner, a remote sandbox, a website's server. That's fine until the signal drops or you'd rather your code didn't leave your device. PocketCode does the opposite: it executes real languages on the device itself, so running a script is as local as opening a note.

Here's the full picture of what runs, what's ready instantly, and what needs a one-time download.

Five languages, ready the moment you install

These ship inside the app. No download, no account, no connection — install PocketCode, open a file, tap Run:

Language	What runs on-device
Python	A complete CPython 3.11 with the full standard library
JavaScript	A real bundled Node.js runtime
C	An on-device C compiler that compiles and runs your code
Ruby	A real Ruby interpreter
PHP	A real PHP interpreter

On top of those, HTML, Markdown and JSON get instant local preview and rendering — no runtime required. So the everyday trio of "write a script, build a page, check some data" works the second you open the app, on a plane or off-grid.

Want the deep dive on one of them? We wrote a full guide to running Python on Android — how CPython executes locally, what the standard library covers, and its honest limits (no pip, so it's a scripting and learning environment, not a data-science stack).

More, one download away

Beyond the bundled five, PocketCode offers optional language packs. You download a pack once, and from then on that language runs on-device and offline, just like the built-in ones. The packs available today:

Go · TypeScript · C# · C++ · Lua — plus Rhai, a Rust-style scripting language (not rustc).

That takes the total to about eleven languages you can execute from the same editor, on the same phone, without a server in the loop. Some packs are interpreters (Go runs via Yaegi, not a full go build) and some are full compilers (C++ via Clang), so per-language guides are precise about exactly what each one runs. A few more — including a real Rust toolchain, Swift and Dart — are on the roadmap but not available yet; we don't count those until they ship.

Why "on-device" is the whole point

Running locally isn't a technical footnote — it changes what a phone can be for:

• It works with no connection. Every bundled language, and every pack once installed, runs fully offline. This matters most exactly where mobile shines: commutes, flights, patchy coverage, emerging-market networks.
• Your code stays yours. Nothing is shipped to a third-party runner to execute. Network access is off by default and gated by a setting.
• There's nothing to assemble. No terminal environment to bootstrap, no toolchain to hand-compile. The runtime is already there; you just press Run.
• It's instant. No cold-start on a remote container — execution begins on the device immediately.

The editor around it

A runner is only half the story; you also want to write the code well. Every language plugs into the same desktop-class editor: LSP-backed autocomplete and IntelliSense, TextMate syntax highlighting, on-device formatting, multi-cursor editing, a programming symbol bar, and real code navigation. Output streams into a proper console — print/console.log, stack traces, exit codes and all — and for anything shell-shaped there's a built-in terminal alongside it.

What this is, and isn't

Being straight about scope keeps expectations honest:

• Great for scripting, learning a language, algorithm practice, automation, prototyping, and running real code away from a desk.
• Not a full native build farm. Heavy compute runs at interpreter speed, and runtimes that rely on huge native ecosystems (think Python's C-extension packages) stay within what each language ships on-device.

Within those lines, it's genuinely a pocket-sized multi-language runtime — and there isn't much else on Android that runs this many languages, this locally.

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One phone, a dozen languages, all executing on the device in your hand.

Running code on Android: quick answers

Can you run code on Android? Yes — real languages, on the phone itself. Five are bundled and offline from the start (Python, JavaScript, C, Ruby, PHP).

What languages can you run? The bundled five, plus Go, TypeScript, C#, C++ and Lua as optional packs — about eleven in total.

Do you need a computer or a server? No — everything runs on-device, offline, with nothing uploaded.

Do you need Termux? No — the runtimes are built in; nothing to install or compile by hand.

Can you compile on a phone? Yes — C compiles and runs on-device; C++ via an optional Clang pack.

Does it work offline? Yes — every bundled language, and every pack once downloaded, runs fully offline.

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