I love my Fenix3's built in timer app. The basic countdown app with sounds and vibration. I use it almost every single day. However, I'd love to have an app like this on my Forerunner 235. Right now I have GymTimer which is okay, but it can't function as a regular timer without recording HR as an activity and it doesn't support sound alerts which I need, as the vibration isn't likely to get my attention. I don't use the alarm function because it doesn't function like a timer should, I like to reset it, stop it, etc.
So a basic countdown timer app (not an alarm or gym app or stopwatch) would be great!