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データお引っ越し is a tools app by KDDI株式会社 with 1,000,000+ downloads (about 3.9M estimated). +10K installs in the last 7 days. Install growth, rank history, SDKs and ad networks.
From the store listing: “au's free official data migration app!
With this app, you can easily transfer data when changing models.
It is also possible to move data from Android to iPhone to different models / OSs.
All you need to do is log in with your au ID!
Anyone can easily migrate data.
□ ■ Main functions of the data moving app ■ □
・…”