MyCellstar+Sync is a free app developed by セルスター工業株式会社 to conveniently and enjoyably use their safety radar ASSURA and drive recorder. This app allows users to download the latest GPS data, real CG warning images, public transportation enforcement information data, and high-speed road gasoline station price information for free. It also provides features such as content downloads for ASSURA's standby screen, digital photo frame functionality, easy customization of images and sounds for ASSURA's opening, warning, and guidance, GPS spot registration, display of driving logs created by ASSURA, and information provision on speed enforcement devices. The recommended operating system for this app is Android 5.0 or later.