May be a slightly mad idea, who knows. But I was on Zwift today and my power started dropping out. I assume it's probably the batteries in the meter (which happens to be an older PowerTap wheel).
It's annoying if you lose a ride because the batteries in one sensor or another go. And many Ant+ sensors, I know, broadcast battery levels with other information. I think you can use the Ant+ Plugin Sampler on Android to read meters, but it's all in text and you have to go to each sensor one by one.
So it struck me that an app that checked all your sensors and showed their levels, on one screen, would be a good one to run before any significant ride. Obviously only for sensors that provide the information, but preferably for various manufacturers all in one app. As it happens, my other sensors are Garmin.
Probably something that would be included in an app with wider fitness features. Is there anything like this?