まんぞく通話アプリ is a free social networking app developed by Toshimitsu Suzuki for iPhone. It allows users to make and receive calls with their desired conversation partners by inputting their respective IDs. To make a call, users simply enter the ID of the person they want to talk to and tap the call button. On the other hand, to receive a call, users need to inform their conversation partner of their own ID and wait for the incoming call.

It's important to note that users should refrain from making any statements that violate public order and morals or engage in defamatory speech when talking to their call partners. Additionally, making voice calls requires points, while receiving calls is free of charge. For any further inquiries or clarifications, users are encouraged to contact the developer.