La descripción de App Manager

APP Manager helps you backup and restore installed application easily.
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The backup is stored in the /sdcard/BackUp folder by default.
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Uninstall apps quickly without navigating to setting page every time.
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Take a quick backup before you uninstall an app.
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View all backed up apps stored in sdcard and restore them if required.
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Share the apk/apps with your friends via bluetooth or mail
Features:
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Share apps instantly
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Backup apps to SD Card
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Restore apps from SD Card
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Quick Backup & Uninstall
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Backup to any custom folder
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Batch Backup
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No Ads
Note:
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APP Manager cannot backup data or settings of apps for you, but it only backup the apk files to SD card.
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App only displays user installed apps but not system apps
FAQ:
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Q: Does it backup data of apps?
A: No, currently it only backup the apk files of apps.
Q: Why can't I restore apps?
A: Go to "System Settings"->"Applications", enable the "Unknown sources" setting, then you can restore apps from SD card.
Q: What are "Protected" apps?
A: "Protected" means that the apps are protected by "Copy Protection", and the apk file of them cannot be copied to SD card.