價格：免費
檔案大小：64.2 MB
版本需求：系統需求：iOS 9.0 或以後版本。相容裝置：iPhone、iPad、iPod touch。
If you still have that slow and time-consuming digit, you can come and practice with Fast Digit.
On the other hand if you find yourself fast come and test your speed with other users in a real-time ranking.
Improve your time more and more to climb the ranking.
