SGIタイマー is a free Android app developed by SGI-APP and designed for Buddhists. It is a timer that helps users keep track of their chanting sessions, with a focus on the practice of Nichiren Buddhism. The app is compatible with Android 9.0 and has recently added an automatic backup feature that saves chanting time data to a server. However, the app does not backup prayer items.

The app suffered a data loss issue on December 11th and 12th, which affected many users. The cause of this was a bug in Google's Android/Chrome79 update. The app indirectly uses Chrome through its WebView feature, and the update caused data loss for many apps. The developer has apologized for the incident and promised to implement a new backup system that will send chanting time data to the server whenever the user records it. This will be a forced backup to avoid data loss in the future.

Overall, SGIタイマー is a useful app for Buddhists who want to keep track of their chanting sessions. The automatic backup feature adds an extra layer of security, and the forthcoming update should ensure that user data is better protected.