This app was removed from the App Store.
Mac OS Utilities
MySwitch - switching between running applications with keys F1 , F2 etc.
● Hide all of the other apps
Choose Apple menu > System Preferences, and then click Keyboard.
Select the “Use all F1, F2, etc. keys as standard function keys” checkbox.
Note : Enable access for Assistive Devices
MySwitch requires the ability to control your computer for it to work.
To grant access to MySwitch:
* Open Security preferences
* Click the Privacy tab
* Select Accessibility in sidebar
* Ensure MySwitch is enabled
* Relaunch MySwitch.