Its okay
Soooo, it should have different tones for different timers, the timer only goes off for a moment, and then just leaves a push notification :( it should just keep going off. If you can keep looking at your timer its fine I guess, but as a chef I expect my timer to alert me without having to constantly check the timer. I think the standard single timer that comes with the iPhone is better
Haute chef about
Sous Chef : Timers & Recipes