Tap Knock Strike app for iPhone and iPad

This is a counting app, you can tap the screen and it counts. If you tap and hold it opens a menu and a button where you can reset the counter to 0. Quite straight forward, just wanted a tap app without any other device permissions needed. I need this for doings some exercises to count for me and I just wanted to be able to slap the device and not worry about how many points touch the screen, many other counters block parts of the screen, requires that you touch them with a single point, has adds or ask for strange permissions like network access etc.. not necessary!