I looked this up and found myself redirected from website to website. All I could find was that it registers temperature and humidity and also the app takes some sort of feed from local weather data. I think it would take a lot of skill to interpret such simple data and then determine the "risk of swarming, food shortage, sudden collapse in the population, risks of pathogens due to humidity, etc.". Furthermore there was a warning to visit a website to check coverage in your area before purchase and that link just took me to a Google map of France with the symbol "Hostabee" centred on Paris
At a £100 per hive and then 36 euros per year subscription for each device after the first year, they do suggest you could monitor say 1 in 3 hives but then sods law says that it's one of the other hives not monitored that swarms.
It all looks a bit start up to me so I'll pass on this. But it will tell you where the hive is just in case you forget (or it's stolen I guess....
In any event, is it not more satisfying to visit your hives and see what's happening, learning to interpret what you see and hear rather than have a app try and do the job for you?