Least lag or no lag
You wont find a better rhythm accuracy trainer than this (probably). Plus the red/green circles at the end of each exercise are an amazing indicator of where you tend to play the beat.
Totally worth $3. Dont be ridiculous about the price.
The only thing Id like more of is easy/basic rhythm (quarter/half/dotted half/whole notes). I have a lot of beginner piano students who should use this but theres not much for beginners. (That said, it had a lot of great intermediate and advanced rhythms!)
kate.larocque about
Rhythm Sight Reading Trainer, v6.9