Good, perhaps, in a pinch but I and all musos I know already have their favourite looping / slow-down / EQ / song segment apps. I use Anytune Pro on an iPad, my

Good, perhaps, in a pinch but I and all musos I know already have their favourite looping / slow-down / EQ / song segment apps. I use Anytune Pro on an iPad, myself, and for one thing it has fractional speed adjustment - 0.5 / 0.75 / 1 etc is just too broad a range, especially as I like practicing things at 0.7 then 0.8 then 0.9 etc if they are particular tricky to get down.