OT- accessible metronome for IOS

[Brian Howerton]

Hello folks,
I know this is off-topic, but I was wondering if anyone knew of an accessible 
metronome I can use with my iPhone or iPad to be able to run click track at 
church?  Our worship leader did it tonight with an app and I downloaded that 
app and it is almost completely accessible accept for the tap tempo feature and 
the one I have to program the metronome on the fly would take way to long in 
between songs.  Thanks,
Brian