There are three different modes you can use the WARP app. 

Services that are, and will remain, free:

• 1.1.1.1 lets you protect your DNS queries by encrypting them with HTTPS and TLS. We use our public DNS resolver 1.1.1.1 to resolve your queries and prevent ISPs from seeing and selling your data.
• WARP is 1.1.1.1, but better. In addition to encrypting your DNS requests, we leverage our global network of data centers and a more modern protocol to make your internet even faster.

Paid service:

• WARP+ Unlimited is accessed via a monthly, paid subscription. With WARP+ Unlimited, we route your internet requests to avoid Internet traffic jams, making it even better. Currently, WARP+ Unlimited can only be purchased via Apple App Store and Google Play Store.