!!! Checkout Presto Metronome 2!
https://rmatter.com/presto/
Presto Metronome is free and can improve your speed and accuracy on any instrument. Presto has all of the typical things you would expect from a modern metronome, plus some excellent training tools.
The training tools include a Accelerando (Accel.) Trainer; which will gradually increment the start tempo to your goal tempo over a fixed length of time.
The Step Trainer is more like a hands free metronome. It bumps up the tempo...