The answer is easy: yes you can!
But: it depends on your phone what you need to set up! There is a difference between Android and iPhones.
Setting up a hostspot on your iPhone
The default hotspot you can configure on an iPhone is not compatible with the KiddieAlarm. To make it compatible however you need to enable the options “Allow Other to Join” and “Maximize Compatibility”. Doing this enables the hotspot to be findable by KiddieAlarm devices.
Setting up a hotspot on your Android phone
In theory most Android phone hotspots are out-of-the box compatible with KiddieAlarm. However you need to make sure that you have enabled the option “Extend compatibility” from the hotspot settings. We also recommend to not use any uppercase and lowercase mixing in the name of the hotspot as well as to avoid special characters and numbers.