NTT Docomo has launched an official app that allows users to easily check their data usage, fees, and dPoints. The app displays the total data usage for the current month and the remaining data usage before the speed is reduced. It also shows the total data usage for the past three days and one month, as well as the total data usage for the current month's packet pack. Users can also check their dPoints and contract plan information. The app is available for Android OS 7.0 to 13.0 on Docomo smartphones and tablets.

In addition to data usage and fee information, the app also provides support services and frequently asked questions. Users can log in with their dAccount and the app supports up to 20 accounts. The app can display up to 12 months of usage fees, and users can receive notifications when their data usage is running low. The app also includes links to data usage addition options and data usage confirmation sites.

Users should note that the app requires packet communication fees, so it is recommended to have a packet flat-rate service contract. The app is not available for customers who have joined the Docomo Business Premium Club. The data usage displayed is for reference only and may differ from the data usage used to calculate the billing amount.

Overall, the Docomo official app is a convenient tool for users to check their data usage, fees, and dPoints. It also provides support services and frequently asked questions. Users can easily log in with their dAccount and the app supports up to 20 accounts. However, users should be aware of the potential delay in data usage updates due to system maintenance.