You can import contacts from your Contacts app into the Grasshopper Connect app. Also see How do I add a new contact?
- Tap Contacts in the lower toolbar.
- Tap the blue Add icon in upper toolbar.
- Tap Import Contacts.
- Select all the contacts you want to add, then tap Add Contacts.
Please note that importing contacts is a one-way sync; any updates you make to a contact in the Grasshopper Connect app will not impact the corresponding entry in your Contacts app (and vice versa).