Double or triple "soft resets" are the most forgotten things one can do in an OS.Nothing pending in the store. The app is installed to my phone's internal storage, with no available option to move or uninstall it. According to the app, I have version 10.1512.58020.0. I'm thinking a hard reset might be my best shot here.
Edit: After two soft resets my alarms are working. Sure was a lot easier than a hard reset and restore.