1. Home
  2. 📊 Productivity
  3. Möbius Sync
Möbius Sync

Möbius Sync

File sync with Syncthing

122 ratings
155 reviews
🔧 Utilities
📊 Productivity
Free
In-App Purchases

Details

  • Released
  • Updated
  • November 22, 2020
  • January 27, 2025

Features

Developer

Pickup Infinity Limited
✨Promote your app ✨
Möbius Sync screenshot #1 for iPhone
iphone
ipad
🧾$4.99
In-App Purchase↘︎
📌Ready
Reviews summary↘︎
⭐155
Reviews↘︎
📝9+ tags
Tags↘︎
🔄6+ apps
Alternatives↘︎
❓5 answered
FAQ↘︎
📦w/o updates
Updates frequency↘︎
🖼️Get Icon
Icons↘︎

About

Synchronize files between your iOS devices and other Syncthing-supported platforms without relying on cloud storage. Manage multiple folders and remote devices, with options for sandbox or experimental cross-app sandbox syncing.

✓File synchronization between iOS and other Syncthing devices
✓No cloud service required
✓Supports multiple folders and remote devices
✓Sync within app sandbox or other app sandboxes (paid)
✓Uses open-source Syncthing engine
Show original description

What users say

Summarized from real user reviews of Möbius Sync. Based on 122 reviews and a 3.8/5 average, it highlights the 8 positives and 14 negatives reviewers mention most about this Productivity app.

Positive things

  • ✅Effective Syncthing implementation for iOS
  • 💰Fair one-time purchase model (no subscription)
  • 🔒Privacy-focused peer-to-peer syncing
  • 📱Good Files app integration
  • ⚡Fast file synchronization when working
  • 🎯Works well with Obsidian and Logseq
  • 🛠️Stable once properly configured
  • 📂Supports syncing large file collections

Negative things

  • 🐛Outdated internal Syncthing version (1.28 vs 2.x)
  • 💸Aggressive paywall at 20MB free limit
  • 🔌No true background sync (iOS limitation)
  • 🚫Cannot sync iOS Photos app natively
  • ⚠️Inconsistent purchase restoration across devices
  • 🔧Complex setup and configuration required
  • 📵App stops syncing when closed or locked
  • ❌Limited selective sync capabilities
  • 🐛Frequent 'insufficient space' errors despite available storage
  • 📞Poor developer communication and support
  • ⏱️Infrequent app updates
  • 🎨Unintuitive UI (uses web interface)
  • 🚫No family sharing for in-app purchases
  • 🐛Purchase button non-functional on some devices
See all reviews

What's New in Möbius Sync

1.28.0

January 27, 2025

Incorporates Syncthing 1.28.0 (https://github.com/MobiusSync/MobiusSync/issues/210) Enhancement: Support family sharing (https://github.com/MobiusSync/MobiusSync/issues/208) Enhancement: Photo Collection option: export as read-only (https://github.com/MobiusSync/MobiusSync/issues/182) Bug fix: External folder stops syncing after restore onto new device (https://github.com/MobiusSync/MobiusSync/issues/201) Bug fix: Background crash reported via TestFlight (https://github.com/MobiusSync/MobiusSync/issues/211) Bug fix: External Bookmarks Persist Even When Folders Are Removed (https://github.com/MobiusSync/MobiusSync/issues/188) Bug fix: Vision Pro - camera used for QR Code scanning (https://github.com/MobiusSync/MobiusSync/issues/214)

More
1

In-App Purchases

$4.99

Unlimited file sync

Sync unlimited files with unlimited devices

User reviews

Most RecentHighest RatedLowest Rated

Open external folder doesn't work

Title. Whenever I try to open a folder, and tap "external folder," it just doesn't work. No file explorer is brought up, no folder is created where I want it, etc.
LovingLich9258LovingLich9258

not updated

latest version with breaking chang
paul zqwpaul zqw

Old Syncthing Version

I’ll revise my 1-Star rating when the internal Syncthing version 1.28 is updated to a 2.# release. Right now my iPhone can only see 1 of the 5 devices it’s paired with, and it can’t even sync files with it. The problem is all those devices are running Syncthing v2 and as they’re updated to newer and newer versions my iPhone has more and more trouble connecting with them. I could downgrade all my other devices to 1.28 but just no.
Show more
Andy-000000Andy-000000

best app in this category supports from algeria

than you
t nazimt nazim

Приложение больше не обновляется

Автор забросил приложение. Ишка с syncthing v1.29.2 на гитхабе висит ещё с 5 мая 2025. Уже давно syncthing v2 вышел. Жалею, что купил Pro-версию.
Val SavenVal Saven

Response from developer

The way iOS reports free space to the app is very conservative, so you may need to decrease the Minimum Free Disk Space value under advanced folder settings.

See 150 more reviews

Developer apps

TWiTfinity
TWiTfinity

Unofficial twit.tv app

🔍 Reference

(7)

Free
Heckle Live Streaming
Heckle Live Streaming

Heckle here... (nicely)

🌐 Social Networking

(86)

Free
In-App PurchasesWith Ads
Möbius Sync Pro
Möbius Sync Pro

File sync with Syncthing

📊 Productivity

(20)

$4.99
See developer apps

User experience

🐞

Reported Bugs

16 issues

Syncthing version incompatibility with v2.x devices

Bug

Device discovery limited to 1 of 5 paired devices

Bug

Insufficient space errors despite available storage

Bug

Purchase dialog rendering issues on older devices

Bug

Purchase not persisting after app reinstall

Bug

Settings reset after app updates

Bug

External folder bookmark path cannot be changed

Bug

.stfolder sync failures and naming conflicts

Bug

Sync hangs at intermediate percentages

Bug

Files not appearing in designated folders despite sync confirmation

Bug

App crashes and becomes unresponsive

Bug

Language preference not saved between sessions

Bug

Syncthing disabled errors with no explanation

Bug

Quick Sync feature not working reliably

Bug

Accessibility issues with VoiceOver

Bug

App storage consuming excessive disk space (10GB+)

Bug
✨

Requested Features

15 requests

Update internal Syncthing to version 2.x or higher

Feature

iOS Photos app sync capability (at least one-way upload)

Feature

True background synchronization

Feature

Selective folder sync to save storage space

Feature

File Provider extension for deeper iOS integration

Feature

Widget for continuous background operation

Feature

Photo library backup functionality

Feature

Family sharing support for purchases

Feature

Better UI/UX with custom frontend instead of web interface

Feature

Automatic sync without manual app opening

Feature

Support for untrusted devices

Feature

Folder encryption support

Feature

Location-based sync triggers

Feature

More frequent Syncthing core updates

Feature

Better documentation and setup guides

Feature

FAQ

What does Möbius Sync do?

Möbius Sync allows you to synchronize selected files between your iPhone or iPad and other devices that support Syncthing. It operates without the need for any cloud service, facilitating direct peer-to-peer file transfers.

What are the key features of Möbius Sync?

Key features include synchronizing files between iOS devices and other Syncthing-supported platforms, supporting multiple folders and remote devices, and the ability to sync within the app's sandbox or, with a paid upgrade, access other apps' sandboxes.

How much does Möbius Sync cost?

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

What devices is Möbius Sync compatible with?

Möbius Sync is designed for iPhone and iPad devices. It synchronizes with other devices supported by the Syncthing protocol, which includes a wide range of desktop and mobile operating systems.

What are common use cases for Möbius Sync?

Common use cases include keeping documents, photos, or project files consistent across your iPhone, iPad, and computer without relying on cloud storage. It's ideal for users who prioritize privacy and direct control over their data.