Lazarus and/or Free Pascal? Android is looking good, though maybe not really a pleasing experience for those with less experience. It even has multiple approaches. iOS is still dark, no one seems interested in making it work, even Arduino gets its place before iOS.

Delphi? Some big mobile apps are written in it already. WPS Office for Android and/iOS, if you ever heard, was written in Delphi. At least the last time I decompile their APK it confirms a Delphi runtime existence. Disadvantage would be the framework that's not native, thus you may end up in jumbo size APK even for a form + label containing hello world.

Haven't tried it yet, once I get desktop tech demo stable (hopefully this month, barring work & laziness) and can see it run on non-Macs, mobile's the next target.

No idea how I'll test Android, I'm a Mac and iOS guy, and years ago when I tried the Android IDE the emulator was appalling.