The BatteryBot app has a claim in its description about having an alarm feature. I tried it out. The alarm feature is only in the PRO version (or you have to pay for it).
I recommend either removing that part of the sentence or put it under a heading that says, “Pro feature”
If there’s a free beer app that chimes out when a phone gets hot this mightbe a place to include that also.
BatteryBot Pro is also on F-Droid. You don’t have to pay for it if you get it from F-Droid (although I’m sure the author would appreciate a donation) and I think it has the full functionality of alarms.
Maybe F-Droid could add a link to the (free) pro version from (free) free version description, but I haven’t seen those links in other similar situations, dunno