All paid services will be terminated on August 31, 2021, and no new paid services will be accepted. If you have paid for the service before May 28, 2021, you will be able to use it until August 31, 2021, free of charge.
If you have paid for a previous version of the software, you may continue to be billed without the free support period until August 31, 2021.
One-time billing will be operated as a paid billing service, but it is only available for older versions. Please note that we will not be able to provide support for problems caused by using the old version.


Thanks to the support of our users, JS Backup apps have achieved over 6 Million downloads!
We will continue to strive to improve the app to best suit your needs. Please continue to support us, thank you.



"JS Backup" is the best backup and data transfer tool: the No.1 backup app in Japan.
Backup, restore, scheduled differential backups, cross-platform data transfer is just a small list of the many features it can perform. You can backup your contacts, photos, videos, music and document files,　etc. to SD card, cloud or computer.




■ Main Features ■

･ Backup and restore contacts, call history, SMS, MMS text messages, calendars, bookmarks, system settings, home shortcuts, alarms, dictionaries, music playlists, images, songs and videos.
･ Transfer your smartphone data to another device with “Easy Data Transfer” in just a few clicks.
･ Automatically schedule backups for new files to keep the backup up-to-date
･ Save backup data to SD card, cloud storage services (Dropbox, SugarSync, Google Drive supported) or computer
･ Backup app apk files to SD card and the list of installed apps to cloud storage services.
･ Restore compatible files (image, sound, video, text, etc.) attached to MMS messages
･ Backup, restore, send and synchronize smartphone data with PC via Wi-Fi




■ Easy Data Transfer Feature■

･ Generate QR code, which enables the restoration of smartphone data, therefore there is no need of SD card, USB cables or computer data transfer software.
･ Just scan the generated QR code with JS Backup on the new device and voilà, important contacts, calendars, text messages, etc. are back.
※Camera access permission is required to read the QR codes




■ Recommended OS ■

Android OS 4.0 / 4.1 / 4.2 / 4.3 / 4.4 / 5.0 / 5.1 / 6.0




■ Notes ■
・Support for German, French, Spanish, Korean, Thai and Russian are added in addition to Japanese and English.

※Devices with Android OS version older than 2.2 or have not gone through security updates are not supported. If an Android OS update is available, please perform the update.

※If a single file exceeds the size maximum capacity of cloud service (Dropbox: 10GB, SugarSync: 2GB, Google Drive: 30GB), it cannot be backed up.

1. Click the download button to Downloading Page.

2. For Normal APK File, you can direct download the file, or you can choose fast download the file with our Installer.

3. For Speicial file such as XAPK or BAPK, you must to choose fast download the file with our Installer.

4. When you finish the file downloading, you must allow your phone to install the file from unknown resource.

Ver 4.4.5
Bug fixs.