ReflexDriver tests and graphs your reflex speed. There are three stimulus modes: sound, vibration, and visual. The app can be used to practice or study reaction times. A bonus 2-person game will settle claims of superiority between friends, siblings, or competitive spouses.
The app saves all performance data and creates in-app graphs to show performance trends. For those serious about analyzing their reaction times, the app allows data exports to SQLite or CSV files. CSV files can be opened with applications like Excel.
To compare your reflexes under varying conditions, add that condition to your name, such as "Alicia--morning" and "Alicia--evening."
Works best on tablets or phones with screen sizes greater than about 4 inches. There is an ad-supported version if you prefer to try it before buying.