Have to say I have only used with iOS. Tbh having previously owned a Fender GT40 with Bluetooth dropouts, I’m more than happy to have a wired connection. Also the amp charges the iPad which would have to be plugged into a wall socket anyway, so I consider it a bonus not a negative. Also unlike Spark you can go completely wireless as you have a screen to scroll through patches plus built in wireless guitar. Also there’s a foot switch. I do agree about the G10 and wish I’d never ‘upgraded' it and got reduced playing time!
considering the bigger and more powerful V60 is actually cheaper the spark, even with constant discounts, it also overpriced imho