Aura ( account needed) developer.aura.com
vpngate ( account not needed)
This Code contains Anchorfree SDK (and VPNGate (no account needed for vpngate )) So Please check the Demo APK before Purchasing it, you should have your own account for it to get Carrierid and insights about the demographics of your users ( you have to contact there support as registration page is not available support@aura.com) or you can contact us at infusiblecoder@gamil.com for assistance.
NOTE: we don’t take any responsibility if your app stop working or your Carrier id is blocked, and if you use our id and our account gets blocked because of which your app is not working so please don’t email us or comment about that, its your own responsibility. And you must have Aura account if you want to use the Aura version