From Hitokotonushi Shrine

Direct download of the APK is provided for users of the app who don't have access to Google Play on their device (hardware and/or geographical restriction). This ability is provided as a courtesy and comes without warranty the app will fully work. Please make sure it does with the free access videos before paying a subscription to Kinomap. To be able to install the APK, you need to make sure that the first selection, Unknown Sources, is checked in the Settings/Application menu. A warning message about the phone being vulnerable to attack will be displayed. You can change this setting back after the installation is complete.

Bypassing Google Play, the automated process of app updates is not active so please follow the insctructions inside the app when recommendation to update are displayed, by coming back to this page and download/install the latest version.