Boxing Round Timer

Could you fix the sound on it cause if you have headphones on it’s super loud even with the sound being off and it’s counting down. Made a button where you can adjust the volume. Please and thank you!

I don’t listen to music while I work the bag, and I don’t need to put my phone in my pocket. All I want is a useful timer and this app is perfectly adequate. I leave my phone open and either on top of the speed bag platform or on a bench near me. I work out at home so I don’t have to worry about my phone getting stepped on or stolen, so I have the advantage over people who use a public gym. I don’t like or need the bells and whistles of other apps, just a reliable timer, and this app does that just fine.

I really like except it doesn't work with the phone locked. It would be nice to hear it while it is in my pocket through the ear phones.