This app is perfect for random interval rewards. But I have two huge problems, the first is that it does not run in the background, it has to be open at all times and the second is that it only runs for an hour. I always forget to start it again after it runs out. Fix these two issues and you have a perfect app for behavior reinforcement.

Highest level of reinforcement is variable schedule. There has not been an option for variable interval timer on iPhone for years now. I am SO GLAD to finally have this option!!! PLEASE KEEP THIS APP UP TO DATE - YOURS IS THE ONLY ONE I CAN FIND FOR IPHONE!!! THANK YOU SO MUCH FOR MAKING THIS APP!!!!Only drawback is that there is a preset menu of average times - you can’t set your own, however the times offered should cover most classroom / home environments.The one star rating on this app is from someone who does not understand variable interval timers - this is not a repeating timer. If you are looking for fixed durations to repeat, there are TONS of those timers available.

Nice app- 2 updates that would make it perfect. 1- give option to have fixed or variable intervals. 2- allow users to set time, for example variable 5min intervals for 30 minutes. (instead of only having the default 1 hr) These 2 options would make the app usable in more ways.

I bought this app for behavior modification. I wanted to set the timer for 2 minute intervals repeating on vibrate. I follow the steps and start the timer. It all went down hill from there. The timer begins going off for different and wrong interval times. Round 1 sets the timer at 0:47 seconds instead of 2 minutes. Round 2 at 1:30. Round 3 at 0:54. Never giving me the correct interval time to provide reinforcement. All I want is a timer that vibrates in my pocket every 2 minutes without having to be reset or clicked.