Essentially all I need is for a single Android app to run on the Pi 4 with touchscreen. Normally we sell this app and the solution to the clients on mobile or tablets etc. But now a new client of ours doesn't want to carry any mobile devices on their oil trucks due to safety concerns. So they asked ...

Hi, I know there is a version of LineageOS for Android on Raspberry Pi 4.
Unfortunately that has a commercial license attached to it.

Is there any Android versions for Raspberry Pi 4 that I can use commercially? (Similar to what emteria.OS had for the Pi 3B)

Is there no way for me to use this in a commercial environment? Or are there at least any alternatives that allow for commercial use? (Android on Raspberry Pi 4)