OneSync: Autosync for OneDrive

Contains adsIn-app purchases
19.7K reviews
Content rating
PEGI 3
1M+
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Content rating
PEGI 3
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About this app

This app is an automatic file sync and backup tool. It lets you automatically synchronize files and folders with Microsoft OneDrive cloud storage and with your other devices. It is an ideal tool for photo sync, document and file backup, automatic file transfer, automatic file sharing between devices,...

New files in your cloud account are automatically downloaded onto your device. New files in your device are uploaded. If you delete a file on one side, it will be deleted on the other side. It works across multiple devices (your phone and your tablet). If their folders are synced with the same cloud account, they will be kept in sync with each other.

This is how OneDrive works on computers but not on Android. Two-way automatic synchronization should be an essential function of the official app. For whatever reason, it is not the case. OneSync is here to fill the gap.

All file transfers and communications between user devices and cloud storage servers are securely encrypted and do not go through our servers. No outsiders will be able to decrypt, see or modify any file contents.

MAIN FEATURES

• Full two-way automatic synchronization of files and folders
• Many sync modes. Not only two-way, you can also choose Upload only, Upload then delete, Download only, Download mirror,...
• Very efficient, consumes almost no battery
• Easy to set up. Once set up files will be kept in sync without any effort from users
• Works reliably under ever changing network conditions on your phone
• Monitors battery level, WiFi/3G/4G/LTE connectivity and adapts its behavior according to user preferences
• Configurable autosync interval: 15 minutes, 30 minutes, every hour,...

If you like this app, please consider upgrading to premium version. By doing so you support the development efforts and get access to premium features. You can upgrade via in-app purchase.

PREMIUM FEATURES

• Sync multiple pairs of folders
• Upload files larger than 10 MB
• Sync your entire cloud account with a folder in your device
• Sync with multiple accounts
• Sync with SharePoint sites
• Protect app settings with passcode
• No ads displayed in the app
• Email support by developer

SUPPORT

Please check out our website (http://metactrl.com/) for more information about the app, including User's Guide (http://metactrl.com/userguide/) and FAQ (http://metactrl.com/faq/). If you run into any issues or have suggestions for improvements, don't hesitate to email us at onesync@metactrl.com. We will do our best to assist you.
File sync and backup for Android and OneDrive
Updated on
Sep 29, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • This app may share these data types with third parties
    Personal info, App activity and 2 others
  • This app may collect these data types
    Personal info, App activity and 2 others
  • Data is encrypted in transit
  • You can request that data be deleted

Ratings and reviews

16.6K reviews
Norman Grieve
December 21, 2025
KEEP AWAY FROM THIS APP...........After using this for more than a decade, it suddenly deleted 8,200 photos from my photo collection then, in the same run, backed up that action and deleted both of my OneDrive copies as well! It then, quite suddenly, stopped supporting OneDrive. I try to reconnect or connect a OneDrive account and I only get a blank screen. I've force stopped it and cleared the cache to no avail. Before I discovered this, it did the same to my microSD copy!!!
8 people found this review helpful
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MetaCtrl
February 5, 2026
We've just released a new version with a fix for the login issue. Please update the app. Email us at onesync@metactrl.com if you still can't connect the app to your account.
A Google user
December 16, 2019
This app seems to sync what it claims to sync very efficiently, plus it has a straightforward user interface and is very intuitive to use. I find Samsung's own default backup software a tad clunky, plus I don't hugely enjoy being tied to one particular brand of phone. And Google's backup capabilities seem about 5 years behind the times. So I'm actually very impressed with this. (But obviously you do need to set it up properly and grant the relevant permissions. No, really. You do.😏)
21 people found this review helpful
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Bruce Melvin
February 7, 2021
Excellent app for making sure you don't lose any mix of file types, get them saved to the cloud frequently and free up space on your phone and/or have them on both places to suit your needs. Been using the Premium version of the app for a few months now and it's brilliant, monitors selected folders and files continuously and uploads to my cloud account without fail. Highly recommend this app for anyone who wants to sync files between their phones/tablets etc and computer.
45 people found this review helpful
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What’s new

In this update we fixed a few bugs and made some performance improvements.

If you like our app, please give it a nice 5-star rating. If you run into issues or have questions, don't hesitate to email us at onesync@metactrl.com. We'll follow up.