The Chipolo default ringtone was composed both with 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
Connect the Chipolo to the Chipolo app on your phone and make sure you can ring the Chipolo (the green 'Ring to find' button should be showing).
On the same screen, tap on the three dots in the top right corner and select Customize Chipolo.
On the next screen, tap on Change ringtone and then select and set up the ringtone you prefer from the list of available ringtones.