Ok, not the best choice of words but yours isn't the first post on here asking similar questions.
I would like one with a few buttons. Engine start, set off, moor up, and engine stop. It would then log the times and GPS position of each action and produce a log of where I've moored, what time I started, etc which could then be exported into Excel either by day or a range of dates.
An alert which detects when the boat hasn't moved for a while to remind me to stop recording would be handy.
Oh, and I don't really want to pay for it.
The thing with a stoppage notification and reporting type app is you need to get CRT on board really for it to be useful else it would become some sort of 'secret' club that only the app users know what is going on.
"Subscribe for £7.99 a month to get stoppage notices or pay £11.99 a month for our premium stoppage alert service to get stoppage alerts as they happen" 😄
Then you have the data coverage issue as not everyone is going to have signal all the time.
Also what is an important issue to one person isn't to another. If people started reporting every low hanging branch because they had to duck slightly it would soon become tiresome.