CallKoro

CallKoro provides reliable international calling with clear voice..

A reliable international calling service from USA and Canada to any country in the world. CallKoro provides:

- Premium call quality.

- Competitive rates.

- Free minutes to test before you pay.

- No auto refill, pay as you call.

- Full featured Android Application, easy to use.

- See the rates before the call.

- Transparent billing, see your bill just after call.