Google Play Link: https://play.google.com/store/apps/details?id=com.nintendo.znej
App Store Link: https://apps.apple.com/ca/app/nintendo-store/id1495746988
The app, which can be used to browse Nintendo systems, accessories, games, and merchandise, was originally released as the My Nintendo app in Japan in April 2020—and has now been updated, rebranded, and available worldwide.
For me, the 3DS gameplay statistics are wildly undercounted. For example, in 2016 I played 21 hours of Phoenix Wright: Ace Attorney Spirit of Justice. According to the Nintendo Store app, I have never played that game.
Not to mention that the app only has 3DS and Wii U stats only until February 2020.