This is a simple timer that counts down in a set interval designed for Behavioral Analyst and the likes. It was made for individuals who need a timer for things such as lab experiments, tracking an item or schedule of reinforcements. Features: Set an interval that counts down until the main timer runs out. You may set a "limited hold" every after interval. Set random interval values from a certain range. Make random values deviations from interval time. Create random intervals based on a max set iteration of the total time. Set vibration patterns. Set alarm tone. Keeps track of the iteration numbers. The notification bar, if you're out of the app will show the interval time and the total time left. Material Light and Material Dark themed- Keep the device awake while timer is running. Profile system to store your different setups. Clicker to keep track of. anything. Please feel free to email me and suggest further features.