I'm honestly amazed some (especially undo!) were shrugged away so easily.
Text editor? Those have undo.
Image editor? Also have undo.
Video Games? Depends. Should you be allowed to "undo" in a game of minesweeper? Probably not- it kind of ruins the game. Should you be allowed to "undo" in Chess? Probably not. Should you be allowed to undo in Solitaire? Maybe.
Chat client? What would you undo? Can't unsend a message.
Web Browsers have back buttons, to the extent that those can undo.
I could see file managers maybe having undo. I honestly don't know if the popular ones today do or not.
What apps are missing undo functionality for you?
They also seem to support app development for Android: https://wiki.lazarus.freepascal.org/Portal:Android and iOS: https://wiki.lazarus.freepascal.org/Portal:iOS
Some time ago they acquired a cross-platform component library, FireMonkey[2], which does not use native controls.
[1]: https://docs.microsoft.com/en-us/windows/win32/controls/indi...
[2]: http://docwiki.embarcadero.com/RADStudio/Sydney/en/FireMonke...