All of these apps are available for Android devices. I haven’t been compensated for my reviews, I just want to share what apps are out there. See more categories under menu Android App Reviews.
This app is meant more for piano technicians. You can look up some piano manufacturers and see what year an instrument was made by the serial number. It only has a few manufacturers so don’t be disappointed if yours isn’t there. This was very interesting to me.
The other options show installation/care instructions for automatic humidity controls for pianos.