I downloaded this to try it out for a couple of my students and was disappointed with the errors. I couldn't give this to my students because there are notes that are blatantly wrong. B-flat below middle C is shown on the back of the card as being played with 1st finger a whole step above open G. Then there are notes that are at least shown at the right pitch, but fingered unconventionally. For instance an A-flat above the top staff line would rarely be played with a high 3rd finger: almost always it would be played with a low 4th. Similar errors are made on other notes. A# on the G-string is shown being played with the 2nd finger, but it would normally be played with the 1st. Overall I'm not impressed with the editing of this app. The interface is decent, but it's not really useful if it's providing faulty or misguided teaching.
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