Comparison

ownCloud vs Möbius Sync

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

ownCloud

Access, sync, and share your private cloud files securely across all your devices. Create, edit, and collaborate on documents with colleagues, ensuring your data is always up-to-date and accessible.

Highlights
  • Private file sync and share
  • Cross-device synchronization
  • Secure file sharing
  • Create and edit files
  • iOS Files integration
  • Multi-select and drag-and-drop
Features
Read full description

Your files. Your server. Your ownCloud. Connect to your ownCloud Infinite Scale (oCIS) or ownCloud Classic server and access your private cloud from anywhere. Open source, self-hosted, no third-party cloud required. ownCloud gives you full control over your data. Whether you're a teacher accessing the school cloud, a sysadmin managing a federated deployment, or someone who simply refuses to hand their files to a big-tech provider — this app is built for you. FEATURES - Browse, Edit and Create files Work with your files directly on your device with Files integration, built-in markup tools*, and the document scanner*. Switch between list view and three grid views — all updating live as changes happen locally or remotely. - Built-in viewers View common file types right in the app. Swipe through images in carousel view. Navigate PDFs using their table of contents or full-text search. - Spaces (oCIS) On ownCloud Infinite Scale servers, organise work into Spaces with dedicated permissions, members, and quotas. Full Spaces support is built in. - Sharing and Collaboration Share files and folders with other users on the same server or externally via public links. Fine-grained permissions, password protection, and expiry dates give you control over every share. - Search (Local and Remote) Filter by date, size, type, or location. Save searches and create reusable templates. Local search works fully offline. On oCIS servers, server-side search can also find content inside files (depending on server configuration). - Offline Support Mark files and folders for offline availability. Work without a connection. Changes sync automatically when you're back online. Built from the ground up with offline-first in mind. - Multiple Accounts Connect to several ownCloud servers and accounts simultaneously. Switch between them seamlessly. - Deep OS Integration Native iPadOS multitasking, drag and drop, File Provider, and Shortcuts support. Built by developers who care about how apps should feel on Apple platforms. - Security The app tracks your server's TLS certificates and warns you about unexpected changes. Review certificate details (including a diff of what changed) and accept or reject — right from the app. * Some features may require an In-App Purchase or Subscription. SYSTEM REQUIREMENTS iOS 15.4 or later, iPadOS 15.4 or later ABOUT OWNCLOUD ownCloud is the original open source platform for self-hosted file sync, share, and collaboration. Founded in 2010 in Germany, ownCloud is trusted by millions of users in education, government, research, and enterprise worldwide. ownCloud is maintained by Kiteworks through its Open Source Program Office. Learn more: https://owncloud.com/ Open source: https://github.com/owncloud/ios-app/ Terms of Use: https://raw.githubusercontent.com/owncloud/ios-app/master/LICENSE Privacy Policy: https://owncloud.com/privacy-statement/

About

Möbius Sync

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.

Highlights
  • 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
Features
Read full description

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

Screenshots

ownCloud4 screens
Möbius Sync1 screens

Verdict

The call

The clearest difference is rating: ownCloud at 4.5 against Möbius Sync's 3.8. Möbius Sync's advantage is review sentiment (55% vs 32%). On price, ratings volume, update cadence and ads there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. ownCloud sells 6 in-app purchases, starting at $1.99 per year and Möbius Sync sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

ownCloud holds the better App Store score, 4.5 against 3.8. Both are backed by a comparable volume of ratings — 352 and 140 respectively. Written reviews complicate that: 32% of ownCloud's written reviews are positive against 55% of Möbius Sync's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

ownCloud ships an update every 3 months, Möbius Sync every 2 months. The most recent releases landed on September 28, 2026 and September 29, 2026 respectively.

Scorecard2 real differences · 8 level
ownCloud versus Möbius Sync: the parameters behind the verdict, then further details
ParameterownCloudMöbius Sync
PriceFreeFree
Rating4.5 (352 ratings) — better3.8 (140 ratings)
Positive reviews32.5% of reviews55.0% of reviews — better
Number of ratings352 — better140
Update frequencyEvery 3 monthsEvery 2 months — better
AdsNoNo
In-app purchasesYesYes
MonetizationFreemiumFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.414.1 — better
Further details — not scored
Size72 MB23 MB
Age rating4+4+
DeveloperownCloud GmbHPickup Infinity Limited

Customer experience

ownCloud

All ratings352 ratings
Positive87.5%
Neutral3.4%
Negative9.1%
Written reviews197 reviews
Positive32.5%
Neutral16.8%
Negative50.8%

Möbius Sync

All ratings140 ratings
Positive67.9%
Neutral8.6%
Negative23.6%
Written reviews171 reviews
Positive55.0%
Neutral14.0%
Negative31.0%

User reviews

ownCloud

From 352 App Store ratings

What we love

  • 👍 Good Dropbox alternative with privacy control
  • 🚀 Fast synchronization when working properly
  • 📱 Works well on desktop and iOS
  • 🎨 Clean, modern user interface
  • ♿ Accessible for VoiceOver users

Room to improve

  • 🐛 Frequent app crashes and freezes
  • ⏱️ Slow file loading and navigation
  • 📤 Unreliable upload functionality
  • 🔄 Inconsistent synchronization issues
  • 🔋 High battery consumption

Möbius Sync

From 140 App Store ratings

What we love

  • ✅ 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

Room to improve

  • 🐛 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

Bugs and requests

ownCloud

Reported bugs

33 issues
  • App crashes on startup
  • Login screen freezes
  • Files app integration returns unknown errors
  • Blank screen on certain iPhone models
  • Screen rotation breaks file list display
Show 28 more
  • Photo upload limited to 3 at a time
  • Videos lose metadata during upload
  • App closes unexpectedly
  • Preview crashes when viewing images
  • Media access permission issues
  • Infinite loading without results
  • Files disappear from folders
  • Duplicate file downloads
  • Upload stuck in pending state indefinitely
  • Annotation changes not saved
  • Hand/palm movements close documents during annotation
  • iOS 18 compatibility issues
  • iOS 16 compatibility issues
  • Offline files not cached without internet
  • Shortcuts fail silently without in-app purchase
  • Make available offline hangs after first file
  • OAuth grant expires after device restart
  • Invalid grant errors on photo sync
  • App hangs waiting for server response
  • Scanning documents causes crashes
  • Folders become inaccessible after failed uploads
  • App requests password every 2 minutes
  • Dark mode text visibility issues
  • HEIC format instead of JPEG on upload
  • CSRF check failed on share link creation
  • Slow download speeds compared to web version
  • Battery drain in background
  • Synced files in hidden/unusable directories

Requested features

20 requests
  • Ability to unload/delete offline files
  • Cancel/stop upload functionality
  • Upload only on WiFi option
  • Show upload progress percentage
  • Show file sizes in status
Show 15 more
  • Priority queue for uploads
  • Folder upload capability
  • Text file editing support
  • Activity/modification tracking
  • Turkish language support
  • Automatic backup for all phone data
  • Photo gallery-style grid view with adjustable tiles
  • Swipe-down gesture to exit image view
  • Separate Photos/Videos menu tab
  • Improved web media access for faster photo viewing
  • Video controls for offline playback
  • External storage support visibility
  • Disable global search option for large folders
  • Notification badge removal option
  • Share links creation without CSRF errors

Möbius Sync

Reported bugs

16 issues
  • Syncthing version incompatibility with v2.x devices
  • Device discovery limited to 1 of 5 paired devices
  • Insufficient space errors despite available storage
  • Purchase dialog rendering issues on older devices
  • Purchase not persisting after app reinstall
Show 11 more
  • Settings reset after app updates
  • External folder bookmark path cannot be changed
  • .stfolder sync failures and naming conflicts
  • Sync hangs at intermediate percentages
  • Files not appearing in designated folders despite sync confirmation
  • App crashes and becomes unresponsive
  • Language preference not saved between sessions
  • Syncthing disabled errors with no explanation
  • Quick Sync feature not working reliably
  • Accessibility issues with VoiceOver
  • App storage consuming excessive disk space (10GB+)

Requested features

15 requests
  • Update internal Syncthing to version 2.x or higher
  • iOS Photos app sync capability (at least one-way upload)
  • True background synchronization
  • Selective folder sync to save storage space
  • File Provider extension for deeper iOS integration
Show 10 more
  • Widget for continuous background operation
  • Photo library backup functionality
  • Family sharing support for purchases
  • Better UI/UX with custom frontend instead of web interface
  • Automatic sync without manual app opening
  • Support for untrusted devices
  • Folder encryption support
  • Location-based sync triggers
  • More frequent Syncthing core updates
  • Better documentation and setup guides

In-app purchases

6 purchases

ownCloud

Subscriptions1
  • Pro Features$1.991 Year
One-time5
  • 30 Day Pro TrialFree
  • Document Scanner$2.99
  • Shortcuts Actions$2.99
Show 2 more
  • Markup Documents$2.99
  • Photo Pro Features$2.99
1 purchases

Möbius Sync

One-time1
  • Unlimited file sync$4.99

Questions

Is ownCloud free?
ownCloud is free to download, with in-app purchases available.
Is Möbius Sync free?
Möbius Sync is free to download, with in-app purchases available.
Which has better reviews, ownCloud or Möbius Sync?
ownCloud is rated higher. ownCloud averages 4.5 out of 5 from 352 ratings, while Möbius Sync averages 3.8 from 140 ratings.
Do ownCloud or Möbius Sync have ads?
Neither ownCloud nor Möbius Sync shows ads.
Which is updated more often, ownCloud or Möbius Sync?
ownCloud ships an update every 3 months, and Möbius Sync every 2 months. Most recently, ownCloud was updated on September 28, 2026 and Möbius Sync on September 29, 2026.

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