Ouisync Peer-to-Peer File Sync

4.6
59 reviews
5K+
Downloads
Content rating
Teen
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About this app

Ouisync is a free and open source tool enabling file sync and backups between devices, peer-to-peer.

Features:
- 😻 Easy to use: Simply install and quickly create files and folders to sync and share with trusted devices, contacts and/or groups.
- 💸 Free for everyone: no in-app purchases, no subscriptions, no ads, and no tracking!
- 🔆 Offline-first: Ouisync uses an innovative, synchronous, peer-to-peer design that allows users to access and share files and folders whether or not your device can connect to the internet.
- 🔒 Secure: End-to-end encrypted files and folders - both in transit and at rest - secured by established, state-of-the art protocols.
- 🗝 Access Controls: Create repositories that can be shared as read-write, read-only, or blind (you store files for others, but cannot access them).
- Open Source: Ouisync's source code is 100% free and open source software, now and forever. All code can be found on Github.

Status:
Please note that Ouisync is currently in BETA and under active development, and as such some features and functionality may not work as expected. We encourage users to report bugs and request new features via Github: https://github.com/equalitie/ouisync-app
Updated on
Jun 24, 2025

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.
No data shared with third parties
Learn more about how developers declare sharing
No data collected
Learn more about how developers declare collection

Ratings and reviews

4.6
56 reviews
David Molnar
March 23, 2025
An open source alternative to Resilio and the now unsupported Syncthing Android sounds great. The only problem I have with it, that there is no option to syncronize folders of other apps. Like documents, e-books, galleries, that are using their own folders.
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sajad ashrafpoor
March 25, 2024
I installed the app but it doesn't work offline. It only works when your internet is on. When you are offline it gives you a QR code that only copies the name of the repository in the destination device. I cannot find out how to work with this app offline and as far as i know there is no guidance for using this app
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eQualitie
April 4, 2024
Hi. For Ouisync to work, the devices need to be connected via wifi or similar local network, even when there is no connection to internet. In general, in the Peers page (in Settings) you should see the device that your device is connected to - and when you see that, they will sync with each other. Have fun syncing. Regards, the Ouisync team
BETI RIBOLT
December 1, 2024
شاید بهتر بود ی اموزش ویدیویی براش تهیه میشد. من که نتونستم استفاده کنم Maybe it would have been better to prepare a video tutorial for it. I could not use it
2 people found this review helpful
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What’s new

* Breaking changes: Due to the sync protocol changes this version can no longer sync with peers running any of the the previous versions.
* Protocol improvements
* Implement background service icon on Android
* Allow resetting repository access using share token.
* Implement operations on multiple files/directories (copy, move, delete, download and upload).
* Support edge-to-edge mode on Android 15+.
* Various smaller UI/UX improvements.