The Chipolo default ringtone was composed with both low and high tones so that people of different ages will have no problem hearing it from a distance.
The Chipolo app features a few other ringtones as well for those who think the default ringtone is hard to hear or would just prefer to use a different one.
Changing the Chipolo ringtone
Open Chipolo app and make sure the Chipolo you wish to change the ringtone for is connected (there is a green dot next to it), then tap on the Chipolo name to select it.
On the next screen, tap on "Change ringtone".
You will see a list of available ringtones (you will also be able to hear a preview), select the one you like, and tap on "Set" to apply it.