What is wrong with the Foursquare database? – Calendars 5 by Readdle Review

I've used this app for several years and am generally happy, but why have they stuck with the Foursquare database? Whenever I try to make an appointment and go to select the meeting location, there is a 93% chance the app can't find it. I feel like I emailed the developers about this years ago and they said they were changing it, but they have not. I'd like to find something better. This is so annoying.
Review by Tiny Chum on Calendars 5 by Readdle.