OneSync: Autosync for OneDrive

Contains adsIn-app purchases
14.1K reviews
Content rating
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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.


• 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.


• 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


Please check out our website ( for more information about the app, including User's Guide ( and FAQ ( If you run into any issues or have suggestions for improvements, don't hesitate to email us at We will do our best to assist you.
Updated on
Aug 10, 2022

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
Device or other IDs
This app may collect these data types
App activity, App info and performance, and Device or other IDs
Data is encrypted in transit
You can request that data be deleted
14.1K reviews
Amit dev
August 8, 2022
the best companion app with one drive subscription. You can just link a local folder to a cloud folder and forget it. it will sync any changes in the files either placed in the local or directly uploaded to the cloud. all files are available in both locations. I am surprised One drive doesn't provide an option like this on their own app.
1 person found this review helpful
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Thermal Meltdown
October 13, 2020
I have been using this app for quite a while now, using the paid version. It was working fine, as I intended it to. Until right after an update glitches and resets all of my settings a few month ago. Causing it to try to send "and receive' data in both directions! So my phone was trying to back up my PC! My phone was absolutely FULL of data, it was just barely working! But I finally managed to get it to go back to a saved restore point from the day before on my phone. Working fine now.
30 people found this review helpful
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August 22, 2020
Please double check the app folder pair config. OneSync only syncs what it is configured to sync. If you believe the config is correct, email our support team at We'll get the app log file from you and investigate.
Paul Belli
November 22, 2020
I had purchased the previous version and now have had this version on both a Samsung Galaxy S5 and an S6 and the Two-way sync method has never worked. 'Download only' is the setting I have to use and it's very inconvenient. I would give it 5 stars if I could get two-way to work. Update: Another brand new Samsung phone and I cannot get two-way sync to work. I get "Network Error." I will contact the developer. Update: The developer was quick to assist so now the Two-way sync is working flawlessly. The problem was I had my important file in a Boxcryptor folder. Great app and super helpful. 5 stars!
52 people found this review helpful
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May 20, 2019
Thank you for your review. If you want us to look into your issue, please email our support:

What's new

- Advise and guide users to exclude app from battery optimization. This is needed for reliable automatic sync in the background.
- Various bug fixes and some UI 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 We'll follow up.