How does geofencing work with Taplytics and how many fences can we add?

We get the location from the IP address once in a session from iOS and Android's native geolocation APIs. If we have geofences set up, we get notified when the geofence is crossed - both work similarly on iOS and Android.

The maximum number of geofences for iOS and Android are 20 and 100 respectively.

Please see the docs for Android and iOS as they're relatively straightforward to follow. :)