Register provides quick access to the fingerings for every note on the Boehm-system clarinet, from low E all the way up to high C. You'll never have to lug out a fingering book again! In addition, it includes the standard trill fingerings for every note, in both half- and whole-step increments. You can even add your own custom fingerings!
You can also keep comments for each fingering in the app, so you can keep track of the characteristics of each fingering as it plays on your own instrument.
And unlike most fingering charts, this app also includes fingerings that use the left E-flat key that is present on many high-end clarinets (you can turn this option on and off in the app's settings).
If you are just beginning to learn the clarinet, fingerings for notes from C4 (middle C) to G5 (the G on top of the staff) are included for free. Fingerings for other notes, as well as trill fingerings, adding comments, and adding custom fingerings, can be unlocked with a one-time in-app purchase.