First thing this app does is request to be the default phone/calling app. Then, it requires you to register with them and provide them your personal information. Its a recording app, not a service provider. The fact that they mandate registration after initiation tells me they operate in a bait and catch methodology, and most provably track your information, and sell it on the side. Again, basic call recording app should not need require you yo Register with them, nor have any online connection