portableapp

noun
UK /ˈpɔːtəbl æp/
US /ˈpɔːrtəbl æp/

A small computer program you can carry on a stick and run on many computers without installing it.

I put the portableapp on my USB drive so I could play the game at school.


OTHER MEANINGS

2. A mobile application designed to run on phones and tablets.

She downloaded a portableapp to track her steps.

3. A version of software packaged to run from any folder without setup.

The portableapp version of the editor fits on a memory card.

4. Any lightweight program that is easy to move between devices.

This portableapp works on both my laptop and my desktop.