Diff Counter Hack 1.0 + Redeem Codes

Allows users to keep a count of white blood cells while doing a blood differential. Tapping the images of the corresponding cell types will increment the counter and update a running percentage. Upon reaching a count of 100, the app will play an alert sound to indicate that the count is complete.

The undo button allows users to remove input errors as many times as necessary. The reset button will reset all values back to zero.