Free practice version of the award-winning one-hand keyboard layout that lets any former touch-typist type with one hand.

Use if you've broken your arm, fractured your wrist, lost a finger, or have any other medical condition that limits the use of one hand.

One-Hand Keyboard app uses your existing two-hand typing muscle memory, so it's extremely easy to learn. Your five fingers already know how to do the work of ten.

Former two-hand touch typists will be able to type with one hand in minutes.

How it works:
Examine a keyboard. The motion you use to type "G" is the same motion you use to type "H". Index finger, home row, towards the center of the keyboard.

It's the same motion, but with the other hand. The keys "E" and "I" are also a pair: they're both middle finger, top row.

If you are or were a touch-typist, your brain already knows how to make these substitutions.

So when you want to type a key on your bad hand, type the good-hand equivalent key instead. It's the same finger, same motion as the key you should be typing, the only difference is that you're using your good hand instead of the injured one.

So to type "this" with your left hand, you press the keys "tges". As you're typing, the program figures out the most likely word for that combination of letters. So it types the word "this" despite you pressing the keys "tges".

Use the Caps-Lock key to toggle between the normal keyboard and the one-hand keyboard. When typing a word with one hand, pressing the Tab key will cycle through available word options.

NOTE: Currently only works in English, with the standard QWERTY keyboard layout or the Dvorak keyboard layout. More languages and keyboard layouts coming in the future.

What's New
  • All word prediction options are now shown in a window as you are typing.
  • Tweaked prediction algorithms.

    The word prediction window should appear directly under the text you are typing. However, some apps do not correctly implement the Apple accessibility guidelines. In these apps the pop-up window will appear in the middle of the screen.

  • One-Hand Keyboard Practice Version ( is a Mac software application that has been discovered and submitted by users of

    Operating System: Mac

    Default Install Path: /Applications/One-Hand Keyboard [Practice Version].app

    Bundle Identifier: One-Hand Keyboard [Practice Version] (

    Minimum OS version: 10.6