How it works

How to Get Started

C2Call SDK integration is quick and simple. All you need is to signup a developer account, download SDK and update a couple of credentials in your application code.

  1. Register for C2Call SDK Developer account. Register here

  2. Download SDK with sample code. You can find it in the Developer Area. Click here

  3. Read our Tutorials.
    Tutorials for iOS can be found here
    Tutorials for Android can be found here
    Informations about the WebSDK can be found here

  4. Try our sample Apps. Click here

  5. Further information can be found in our frequently asked questions and in our forum.


C2Call SDK gives you full control of monetizing your apps with a wide variety of effective methods to choose from. SDK Subscribers of Pro and Enterprise packages also receive an Ad mediation service, which is provided by C2Call Team for free. More

ico call credit and pricing

Call Credit and Pricing

With up to 400+ global cellular network coverage, users of apps built using C2Call SDK can call landlines and mobile phone numbers worldwide, at the most economical call rates. There is no additional or hidden start-up fee, connection or roaming charges. All calls are billed per minute.

Users can purchase call credits online via credit card. Also, they can earn free credits with OfferWall by watching short videos, completing offers and downloading other apps. More

About us

C2Call GmbH leads the way in introducing next generation mobile and browser-based calling solutions for the computing cloud. FriendCaller for iOS and Android are built using C2Call SDK, and demonstrate the unique capabilities to establish a peer-to-peer connection with any mobile platform and with any Internet browser without prerequisite software installations. With the new C2Call SDK, developers would now be able to integrate features alike FriendCaller in their existing or new apps on mobile.