Shake tally counter

This is a tally counter app that can help you to keep track of numbers simply by shaking your smartphone.
Of course, you can tap the buttons to keep track as well.
The counted results will be saved to the app history and you can view the full list of past results.
The current count will also be preserved even after closing the app.
How to use:
+ button
Increase the current count.
- button
Reduce the current count.
"Clear" button
Save the current count to app history and reset the current count to 0.
"History" button
Display the full list of past results.
"Sound" button
Switch to a mode where the app plays a sound per count.
"Vibration" button
Switch to a mode where the app vibrates per count.
"Shake" button
Switch to a mode where the app registers each shake as a count.