My Bowling Scoreboard

Bowling is my favorite hobby. I need an app to record down the score and pin location for further analyst. For example, what is the percentage of spare of “Big four”? or how many times of continuous 4 strike ? So, I decide to write this app.
Features:
* Record bowling score or pin location in a database
* Retrieve scores or pin locations from a database
* Show statistics of scores, strikes, and pin locations
* Export history to a CSV (Excel) file
* Support two bowlers
* Support up to 10 history records
Features in the PRO version only:
* Support up to 3 bowlers
* No limitation on the number of history records
* Support no-tap
* Support shoe
* No ads
Features in the Ultra version only:
* No limitation on the number of bowlers
* No limitation on the number of history records
* Export history records to XLS files
* History records printing (for Android 4.4 or above)
* Support bowler's icon
* Support handicap
* Support oil pattern
* Support achievements
* No ads
Pro version
https://play.google.com/store/apps/details?id=com.peterhohsy.mybowlingpro
Ultra version
https://play.google.com/store/apps/details?id=com.peterhohsy.mybowlingultra
Permission
* Modify/delete SD card contents is used to write CSV file to SD card
* Internet access is used for backup/restore database from cloud storage
Note :
For those who need support please email to the designated email.
Do NOT use either the feedback area to write questions, it is not appropriate and that is not guaranteed that can read them.