I have grandma, who has old iPhone, but she is in hospital, and I had to call her with out super payment on regular number, and used this app. It was easy to install, find phone number at my regular contact book and call just. Great service. Not sure only if this one free fully or need to pay something.. 🤔but over all I had chance to reach out to family, wile they don’t have WiFi there, but she needs support even I’m far away, this helps so much to be closer, to hear her voice and let her know, that I love her..😊🫂❤️🙏🏻thank you!