Based on our experience at Estimote entering the region is triggering iOS action much faster than leaving the region and this is how it works for iOS at the mom

Based on our experience at Estimote entering the region is triggering iOS action much faster than leaving the region and this is how it works for iOS at the moment (probably phone battery optimization). Entering region is super responsive (aprox. few seconds). Exit the region might take up to a minute+. If you are building smart alarm-clock it is much better to detect if you entered the bathroom or kitchen than detecting if you left bedroom.