トーク君Talkkun is a free Android social and communication app developed by hanzawamasaki. The app allows you to enjoy a 30-second conversation with your friends. To use the app, you need to register your ID first. Once you have registered, you can search for your friends' IDs and connect with them if they are also using the app.

The app has a simple and user-friendly interface, making it easy to navigate. The 30-second conversation feature is a unique and fun way to connect with friends. It is a great app to use if you want to catch up with your friends quickly. However, the app lacks some features that other communication apps have, such as video chat and instant messaging. Overall, if you are looking for a simple and fun way to connect with friends, give トーク君Talkkun a try.