[App] gforth – GNU Forth for Android

gforthGforth is the GNU’s project implementation of the programming language Forth. This APK is the binary distribution for the Android platform, for ARM and x86-processors. You can find more information and links to source code on, and more information about Android-specific features on

For optimum experience when programming, use a soft keyboard made for that task, like Hacker’s Keyboard.

Gforth is available under GPLv3.

Gforth uses GCC to compile a fast direct or indirect threaded Forth; Gforth is fully ANS-Forth and Forth-2012 compliant. Authors of Gforth are Anton Ertl, Bernd Paysan, Jens Wilke, Neal Crook, David Kühling and others.

The goal of the Gforth Project is to develop a standard model for ANSI Forth. This can be split into several subgoals:

Gforth should conform to the ANSI/200x Forth standard.
It should be a model, i.e. it should define all the implementation-dependent things.
It should become standard, i.e. widely accepted and used. This goal is the most difficult one.

To achieve these goals Gforth should be

Similar to previous models (fig-Forth, F83)
Powerful. It should provide for all the things that are considered necessary today and even some that are not yet considered necessary.
Efficient. It should not get the reputation of being exceptionally slow.
Available on many machines/easy to port.

gforth user reviews :

Awsome forth

A full ANS forth and more on Android, very nice !. Just one feature I would like to add. I would like to use adb to connect to the phone and then have gforth interact with me in that way.
  • Bernd Paysan August 31, 2015
  • You can use telnet. Type in “t” (and return), and then you can telnet to port 4444 of your phone.

Awesome! Updated review: this is gforth on Android, with an extremely fast OpenGL UI that is written in Forth code that’s installed under /sdcard/gfoth/ . I really recommend digging into that code; I’ve had a lot of fun learning OpenGL with this app. NB. tools to create android apps *with* this app, ala AIDE or Terminal IDE, aren’t intended; you’ll need to set up a toolchain under some other OS. Also, depending on your hardware, you might not enjoy the console as much (it might aggressively scroll before ever using half of the screen; it might not update the display after each typed character)

Contact developer :


Source : Download gforth from Play Store

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