Beware.

I think these guys are trying to do too much. It was a nice app to begin with – but now theyre tripping over themselves. They are supposedly releasing a new version for iOS 10 – but its going to be a new app and we will have to pay all over again ( so far theyve just warned us – they havent told us how much its going to cost! ) In addition, I have already paid for the macOS version – but they still have not integrated contacts into the calendar - the most basic benefit of PI when you compare to other calendar apps ( and it wasnt cheap ).
Just beware what you buy now will be left behind in a couple of weeks.

PremiereFan about Informant - Agenda, Tasks, Notes Planner, v4.94