A common pitfall that makes difficult to properly square the clubface is having too much wrist extension at the top. Use HackMotion sensor to detect excessive amount of extension and effectively train to correct this with biofeedback.
Absolute wrist angle values can change for different players, however, there are a number of patterns that are similar for most good players. Use the Tour player data provided in the app to compare your swings to professionals.
Body movements very often are significantly different than they feel. Therefore it is super important to always measure the progress. Use HackMotion sensor to track and visualize the actual movement during the golf swing.