I've just updated the scoring mechanism. Previously it was derived from the number of turns taken to solve the puzzle rather than time. This was to fit in with the relaxed, casual nature. However, I realised that this limits progression, because it could become nigh on impossible to beat a previous score at later stages. 

I've now changed it to a time based value. This means a new high score is always possible by being a bit quicker. 

⚠️If you tried Beta version 1.2.0, the scoring mechanism now creates lower scores as you start out. You may want to do a Factory Reset using the Gear button to reset your scores, otherwise you may not be able to get a new high score.