TDR Wait Time Check is a free, unofficial Android app developed by ThreeSixtyApps that offers visitors of Tokyo Disneyland and Tokyo DisneySea a convenient way to keep track of wait times for attractions, the status of the Fastpass service, and the current operational status of the parks.

With the app's real-time attraction wait times, visitors can plan their day more efficiently and avoid long lines, while the Fastpass service status feature helps them to secure a spot on their favorite rides. The app also provides information on the park's opening hours, making it easier for visitors to plan their visit ahead of time.

Overall, TDR Wait Time Check is a useful app for anyone visiting Tokyo Disneyland and Tokyo DisneySea. Despite being an unofficial app, it is accurate and provides valuable information to its users. However, users should note that if an error occurs while installing the app, they should re-install it.