Дешевые звонки за границу is a free Android app developed by INVATONE SYSTEMS LLP. It falls under the category of Social & Communication and provides an easy and affordable way to make international calls. With this app, you can make calls from anywhere in the world to Russia, or from Russia to any part of the world at a low cost.

One of the best features of the app is that you can use your existing phone number to receive calls without any roaming charges. The call quality is good, and there are no hidden fees. You can make calls even without an internet connection, making it a convenient option for those who travel frequently. Overall, the app provides a simple and hassle-free way to make international calls without breaking the bank.