β Ragtime is most simple Metronome for iOS. β You can control Ragtime Metronome with wired or wireless audio remote control. (make your own bluetooth earphone as tiny simple metronome) - Use play/pause button to start/stop metronome play - Use next/previous track button to increase/decrease BPM by adjust unit - Use fast forward/backward button to increase/decrease beats β Set Max Bpm and Step count to change bpm by adjust unit for speed trading.