I recently figured out that I could use ChatGPT Work on my Pixel Phone to build native Android apps. It builds the app and you can then directly download/install the APK. So now I just build small utility apps on-the-go whenever I need them :)
2. Open it and start a session in "Work" mode.
3. Prompt something like "Create an Android app that does XYZ, provide it as APK".
4. Download and install the APK.
5. Keep on iterating on the app by prompting stuff like "Now add feature XYZ" or "XYZ doesn't work, fix it.". It then always creates a new APK which you can download and update your installed app with.
Amusingly, I started walking recently at a local track. One day while I was walking, I thought, "I should create a little web app for a counter to keep track of my laps." So I asked Claude Code and it whipped up a nice little mobile app with a big "+1" button, a reset, the whole deal, all within less than a lap and a half. Great! A lap later I think, "I should have it keep track of the time it takes me to walk each lap."
As I'm typing out the description, I realize, "You dumbass, you're describing the built-in chronograph feature of the Clock app!" So I just switched to that.
If something in the UI of the app looks weird, you simply take a screenshot and ask ChatGPT to fix it. Or what I also like to do is add a logging functionality to the app. If something goes wrong, I then just upload the log to ChatGPT so that it can fix it.
Personally I can't remember the last time I needed an app and there weren't already several options to choose from.