Note-by-Note Practice Mode
There needs to be an options that stops playback in practice mode until you hit a note or chord correctly. This would make it much easier to get a feeling for what you are doing wrong and correct these mistakes immediately.
Currently this impossible since you only get feedback that you played something wrong but no chance to fix these mistakes since you are directly meant to play the next note/chord.

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mj662 commented
There are other suggestions on this topic, There needs to be a way of combining topics. This would be one of the top topics if combined with the others.
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Bee commented
Note-by-Note Practice Mode would be extremely useful for learning standard notation. My only option at the moment is to slow it down to a speed I can read standard notation at, but that's too slow to play at and I get marked wrong for rhythm reasons.
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Kiwimg commented
If you have an iPhone you can do a screen recording with sound. I found this helpful as I could go back and watch the video and see exactly where I’d made the mistake (late, early, missed altogether, etc.) Be sure to turn your mic on when you start the screen recording as well, because it won’t turn mic on automatically the first time you start your recording.
This is also a great function to use when you want to send people a- “how to video” rather than typing in step by step instructions. -
Brylie Christopher Oxley commented
This feature is common in other piano apps like Flowkey and Simply Piano.
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Anonymous commented
Also a ton of mistaken notes are at the fault of the app. Which requires good internet connection for the app to properly play the song. If the app rushes or lags, the song rushes and lags and punished the player for not having perfect internet.
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Nick commented
Yeah, I wish I could press a button or just say "Back" to rewind to the beginning of the current song section"