1. My only issue is occasionally the intervals get a little mixed up (the sound I chose for low intensity will play, but it should be high intensity, but then the high intensity sound plays, and then I have to look to make sure we are on the same intensity), but it doesn't happen that often, and what do I expect for a free app?I love this app! I do Sprint interval and I used to have to watch my timer which would slow me down.
2. Unskippable adds prevent me from starting and stopping at a precise timer at precise times, rendering it useless.Doesn't work when locked? I set the app up and loaded a bunch of music into it for walking/jogging intervals.
3. There has been multiple times now where the timer will pause or the sound/vibration wont go off and I'm left having to hold my phone in my hand and look at it every 10 seconds instead of focusing on my workout.
4. With the latest update, it now has pop-up ads during the middle of the session that stops the timer from providing the interval alarms and every time the pop-up ad is closed the timer resets without saving what was completed.
5. I deleted it.This used to be the only interval timer I would use but now the ads are invasive and interrupting when trying to set up your timer, which is a killer when you are amped up to start your workout.
6. HIIT Training will make their pennies from the aggressive use of ads, but the ads make their app useless.Unskippable ads that play upon opening the app ruin this interval timer.
7. Also, recently I've noticed when my screen is locked the timer is inaccurate and it can slow down to as slow as half speed.Great free app.
8. It was a simple interval timer with no unnecessary frills and the ads were simple and did not interfere with the functionality of it.
9. Especially during group runs where I need to sync my timer to those of other runners.
10. Update, I had to delete the app because for some reason if I open a document it automatically opens this timer instead.
11. I start the app, make sure it is locked, close the screen, put the phone in my pocket and go.