You’ll dig this app. – Tempo - Metronome with Setlist Review

Honestly - no complaints except on MY OWN INTERNAL CLOCK lol. Just buy the app - you won’t regret it. What’s a couple bucks - but this instead of your next cheap beer at a gig. Plus the app makers are always updating and making improvements.
Review by Scooobysnacks on Tempo - Metronome with Setlist.