You can modify the notification ringtones for both projects and chats on your mobile device.
1. My Settings
In order to access My Settings, click on the "More" option located in the bottom right corner and then click on the gear icon in the uppter right corner.
2. Go to Notifications
To choose your preferred notification tone, go to Notifications in your settings and select Notification Tone.
3. Choose your preferred ringtone
You have a choice of 12 ringtones that can be set for projects and chats.