Starting Metronaut version 4.2.0, you can print your sheet music from the App and using Air Print.
You can print the same score as many times as you wish without limit.
During your 7-day free trial before your first subscription payment, you can print one score for free.
Once your paid subscription starts, you can print 10 different scores each month (each can be printed as many times as you wish).
To print a score, open the piece of your choice, then select the version you want to print. A printer icon will appear right from the version name.
By tapping the Print icon you will open a window which will ask you to confirm your print. The score will not be counted among your monthly printed scores until you confirm the print.