The launcher of the App is called Tottori Loop, a Japanese group in Tottori prefecture (South West of Honshu) protesting the Dowa policy of Japan. The Dowa policy is favorable treatment of the descendants of those who used to be discriminated against. Already in around 2012, the group ran a site called "Jusho de Pon!," or "Enter the Address and Telephone Number Pops Up!" As the name shows, this is a database site where personal information like the name or the telephone number is searchable by entering the address. The intention of the group is not clear. As most of these people treated favorably live in a certain area called the "Dowa Area" or "Dowa Chiku," one possible intention is that they want to let people know the information of those who currently live in the Dowa Area. The group seems to be using the data in published phone books from around 2007, before everyone started being concerned about privacy and is now trying to obtain the newest data by letting users share their own address book information.
Whether the apps will be removed from Google Play is not clear. But it can be an "unauthorized publishing or disclosure of people's private and confidential information" in violation of the policies.
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