runtime-configurableapp

noun
UK /ˈrʌn.taɪm kənˌfɪɡ.ər.ə.bəl æp/
US /ˈrʌn.taɪm kənˌfɪɡ.jɚ.ə.bəl æp/

An app that you can change the settings of while it is running.

The game is a runtime-configurable app, so players can switch the language without restarting it.


OTHER MEANINGS

2. Software whose options can be edited through a settings screen during use.

The runtime-configurable app let her pick a dark theme from the menu.

3. A program that reads its setup from a file each time it starts and can reload changes on the fly.

Because it is a runtime-configurable app, the server picked up the new port number instantly.

4. An application designed so that features can be turned on or off without a rebuild.

Developers shipped a runtime-configurable app so testers could enable new tools themselves.