This happens when the geofence is not well centered in the required place (example home). SoyMomo, in closed spaces stops receiving direct GPS signal, so it searches for an estimated location through triangulation of phone antennas and/or Wi-Fi networks. This location can be updated up to 150 [m], possibly leaving and entering the geofence repeatedly.
We recommend that you modify the geofence, centering it accurately in the required place.
Note: If after centering the geofence you still have issues, email us at email@example.com to help you.