I use the software on an iPad with IOS 12. The app installed easy and I could calibrate all my sensors. I made 20 cm rubberfoam disks to be used as targets for snare, hi-hat, tom and cymbals.
I found that you need to have different ANGLES (horizontal and/or vertical) to have a good detection of which pad is detected. When your stick points in more or less the same direction to two pads the software gets confused. I have my pads as far apart as on a regular drumset. Also my cymbals are higher than the toms.
I have no latency problems.
The red light stays on after the sensors are charged 100%. Reconnecting makes the light turn green.
You don’t have to calibrate the sensors every time.
I had to slim down my sticks (Vic Firth 7A) in order to fit the sensors.
I already reported the problem with configuring the hi-hat pedal.
It would be nice if the configuration is saved. Then you only have to configure next time if you change the setup (different angles, different assignments).
More drumsounds to choose from please ?
I’m looking forward to the sofware/firmware updates …