Really like the free version -- have been using it about a year -- and have beendebating upgrade if only to save my programs so I dont have to recreate every time. Last several months has been glitchy, though. 1) With the programming screen (when returning to programming mode from preview mode theres a window that wont close to allow you to Create workout unless you add another element to the workout -- I just add a cooldown of a few seconds so I can move on and it makes the app happy). 2) For some reason my music app wont work with the app anymore. If I have the music on before I start my circuit, the voiceover countdown disappears. I need to start the circuit and THEN open my music app. Countdown then works fine. Super annoying. Other than that its a great app.
segoviana about Seconds Interval Timer, v3.1