With this "hack" you can have more hints, edit the time you have in any level, mark with a gold medal, and other things..
1) Go to data/data/com.noodlecake.huebrix/files with any explorer with a write permission
2) Edit the file .GNUstepDefaults.
-- Undo any hints used: (If you used any hints, you will not have any medal)
<key>hint_taken_0_1</key> (number of level - I didnt get the numeral system)
<string>YES</string> --> Just put NO
-- Reset your time
<real>96.02228</real> --> Just put 0 (zero)
-- Gold medal
<integer>3</integer> --> Just put 0 (zero)
-- More hints
<integer>10</integer> --> Just put a value, like 99
There are some other options to edit.
Save and make a backup to save any errors... (Put the backup in other folder)