Meaningful periods only by automatically verlängerndem subscription; only then you can see if you are good thing. But this is not so, and I can not figure out how someone unsubscribes again (in the app is only the so-called "premium status" along with current maturity shown).
Most important for me were the wind arrows - and which are far too small and barely readable. Only half hurricanes can then detect slow times.
Conclusion: very nice media Wetterbespaßung (this, however far too expensive), but not a serious prediction / visualization tool.