One thing almost any alarm app/program does, is impose an arbitrary limit. A limit that is oftentimes too low. One example would be that my smart watch can set alarms using voice commands, which is quite handy. That is, until you realize it can only have ten alarms total. It also is not able to delete alarms using voice commands...
On my phone, I like to have a lot of alarms for different times and will often reuse them. There just aren't enough alarm slots since I constantly need to edit old ones. The limit is 100, which isn't even enough for one every 5 minute interval.