Möbius Sync 4+

File sync with Syncthing

Pickup Infinity Limited

    • 4.0 • 95 Ratings
    • Free
    • Offers In-App Purchases



Möbius Sync brings Syncthing to your iPhone or iPad, allowing you to synchronize selected files between iOS devices and other devices supported by Syncthing, without the need for any cloud service.

Supports multiple folders and multiple remote devices. Synchronized folders can be created either:
1. in the Möbius Sync sandbox and files can be added to and retrieved from shared folders via the iOS Files app; or
2. (PAID feature) by accessing other apps' sandboxes. This feature is EXPERIMENTAL and may break other app's functionality.

Uses the open-source Syncthing engine internally.

Usage within the Möbius Sync sandbox is free up to 20MB. Unlimited file sync, including files in other apps' sanboxes is available for a one-time purchase.

The functionality unlocked by in-app purchase is identical to that in Möbius Sync Pro (which is purchased up-front).

What’s New

Version 1.23.2

Incorporates Syncthing 1.23.2.
Fixes problem with Filesystem Watcher Errors - now silently disabled as they serve no purpose on iOS.

Ratings and Reviews

4.0 out of 5
95 Ratings

95 Ratings

lookalivesoftware ,

a couple of frustrating bugs

When I go to add a folder, if I first add an external folder (outside the mobius sync folder) it creates the bookmark:xxx identifier as "file path", but when I add a "folder label" (the first text field in the general tab of the add folder modal) the file path is overwritten by your new label, you have to type a label and then select your external folder

Also I deleted the default folder because I didn't need it, when my only folder was that external folder and I tried to sync, there would be no error, the file path would be correct, the state of the folder on my other machine would be correct ("3 directories, 500kb" etc) but nothing would appear on that filesystem. When I added a file on the remote folder, it showed up in the mobius sync folder on my iphone as if it was treating the default folder as the external folder. very screwy and I cried and reinstalled everything before getting it to work.

4 stars because once its setup it works smooth and i know iOS is a PITA so thanks for your work

Stee-rider ,

Missing a key feature for mobile

This is a pretty solid GUI for Syncthing. I’m still experimenting, but there is one key feature that appears to be missing — *especially* important for mobile devices.

I need the ability to selectively sync. I want to see a listing of everything that’s in a given shared directory, but don’t actually download it to my phone unless I say so.

This is available in Resilio Sync, which is the main app I’m considering other than Syncthing. In Resilio I have a synced folder on my home computer that has almost a Terabyte of stuff. On my phone I can browse all of it, and if I want a particular file I tap to download that file to my phone.

Unless I’m missing a setting somewhere, Mobius and Syncthing doesn’t have anything like this. I either download it to my phone or it’s not linked at all. No in between.

Calvin Corrieri ,

Doesn’t work, don’t waste your money.

No matter what I do, when I click “open folder” it won’t take me to the folder I’ve designated for a synced folder. It takes me to the “on my device” folder, and when I manually navigate to the folder I designated, it’s empty. Under the panel in mobius, it claims that my files have been synced. But they’re nowhere to be found in the files app, no matter what I do or where I look. Extremely frustrating. There is no documentation whatsoever on how to properly set up folders, which I have to assume is intentional at this point. Just another iOS app taking your money in exchange for false promises. Extremely frustrating. I’d happily pay $50 for an app that legitimately delivered on the promise of bringing full Syncthing functionality to iOS. But sadly it looks like that will never happen. Unfortunately, I just have to accept that I’m stuck with iCloud Drive as the only working way to sync my files.

Developer Response ,

A few users have reported this and found that the files appear within the Files app after a phone reboot. Hopefully this works for you, if not please contact us via support channels.

App Privacy

The developer, Pickup Infinity Limited, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Collected

The developer does not collect any data from this app.

Privacy practices may vary, for example, based on the features you use or your age. Learn More

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