Local client API call on Cordova app

I am building an app which is consuming a remote third party API (RESTFUL).
This API limits usage to max traffic per day. HTTP-calls via server methods as broadly advised work but will add up traffic counting on IP address of meteor server (digitalocean).
Direct calls on client-side run into same-origin limitations (CORS).
Is there a way to have app users consume the traffic limitations of remote API via their own IP-addresses (client side API call?)

Thanks heaps