Never even got it to open

This is a review of the app, per se, as I was never able to get the app to launch. It downloads from the Mac App Store just fine, then on opening reports:

“Howler Timer.app” is damaged and can’t be opened. Delete “Howler Timer.app” and download it again from the App Store.

MBP 15” (2015) running Yosemite 10.10.4.

davepend about Howler Timer