# Möbius Sync vs VaultSync for Obsidian

The clearest difference is update cadence: VaultSync for Obsidian at weekly against Möbius Sync's every 2 months. Möbius Sync's advantage is review sentiment (55% vs 33%) and iOS requirement (14.1 vs 18.0). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Möbius Sync sells 1 one-off in-app purchase and VaultSync for Obsidian sells 4 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

Möbius Sync ships an update every 2 months, VaultSync for Obsidian weekly. The most recent releases landed on October 13, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Möbius Sync | VaultSync for Obsidian |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.8 (140 ratings)](https://appshunter.io/ios/app/mobius-sync/id1539203216/reviews)** | — |
| Number of ratings | **140** | — |
| Positive reviews | **55.0% of reviews** | 33.3% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Weekly** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 23 MB | 25 MB |
| Requires iOS | **14.1** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Pickup Infinity Limited](https://appshunter.io/developer/1118833408) | [Umut Erdem](https://appshunter.io/developer/1891737870) |

## What reviewers say

### Möbius Sync

[App page](https://appshunter.io/ios/app/mobius-sync/id1539203216)

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:** Family Sharing, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlimited file sync | $4.99 | one-time |

**What reviewers like**

- ✅ 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

**What reviewers complain about**

- 🐛 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

**Reported bugs**

- 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

**Requested features**

- 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


### VaultSync for Obsidian

[App page](https://appshunter.io/ios/app/vaultsync-for-obsidian/id6761845197)

Sync your Obsidian notes between your devices and your own server using peer-to-peer technology. This app provides a direct connection without relying on cloud storage, ensuring your data remains private and accessible on your iPhone and iPad.

**Highlights:** Peer-to-peer sync with your own server, No managed note cloud or third-party storage, Direct sync into Obsidian's iOS sandbox, Markdown conflict resolver with side-by-side diffs, Sync activity timeline and diagnostics, Optional Cloud Relay for faster incoming sync

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Cloud Relay | $1.99 | per month |
| Cloud Relay | $14.99 | per year |
| Small Contribution | $2.99 | one-time |
| Big Contribution | $9.99 | one-time |


## Frequently asked questions

### Is Möbius Sync free?

Möbius Sync is free to download, with in-app purchases available.

### Is VaultSync for Obsidian free?

VaultSync for Obsidian is free to download, with in-app purchases available.

### Do Möbius Sync or VaultSync for Obsidian have ads?

Neither Möbius Sync nor VaultSync for Obsidian shows ads.

### Which is updated more often, Möbius Sync or VaultSync for Obsidian?

Möbius Sync ships an update every 2 months, and VaultSync for Obsidian weekly. Most recently, Möbius Sync was updated on October 13, 2026 and VaultSync for Obsidian on October 6, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*