How do I add/delete contacts to Talkatone ?

Talkatone app can only display contacts from your local phone book. When you add contacts to your Contacts app (on your Device), they will show in Talkatone.

If you wish to add/delete/edit contacts, then you have to add/delete/edit these contact's details directly to/from/on your Contacts app (on your device).

Next time you restart the app, then the contact's details will update on Talkatone.