# Möbius Sync vs KNOWLY AI

The clearest difference is review sentiment: KNOWLY AI at 100% against Möbius Sync's 54%. KNOWLY AI also leads on rating (5.0 vs 3.8) and update cadence (every 3 days vs every 3 months). Möbius Sync's advantage is ratings volume (141 vs 1). 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 KNOWLY AI sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

KNOWLY AI holds the better App Store score, 5.0 against 3.8. That said, the two scores are not equally well evidenced: Möbius Sync has 141 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 54% of Möbius Sync's written reviews are positive against 100% of KNOWLY AI's.

Möbius Sync ships an update every 3 months, KNOWLY AI every 3 days. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Möbius Sync | KNOWLY AI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.8 (141 ratings)](https://appshunter.io/ios/app/mobius-sync/id1539203216/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/knowly-ai-document-analyzer/id6760889568/reviews)** |
| Number of ratings | **141** | 1 |
| Positive reviews | 54.3% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 3 days** |
| Monetization | Free with in-app purchases | Freemium |
| Size | 28 MB | 18 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Pickup Infinity Limited](https://appshunter.io/developer/1118833408) | [TEMNE ADAH HARDAWAY](https://appshunter.io/developer/1874712586) |

## What reviewers say

### Möbius Sync

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

Sync files between your iOS devices and other Syncthing-compatible platforms without relying on cloud services. Access files within the app's sandbox or, with a paid upgrade, integrate with other apps' sandboxes and export photos.

**Highlights:** Peer-to-peer file synchronization, Syncthing engine integration, Sync with other Syncthing devices, Access files via iOS Files app, Paid access to other app sandboxes, Paid export of iOS Photo Library

**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


### KNOWLY AI

[App page](https://appshunter.io/ios/app/knowly-ai-document-analyzer/id6760889568)

This AI-powered tool helps you quickly understand and simplify complex information. It extracts key details from documents, articles, and conversations, providing clear explanations and insights for learning and productivity.

**Highlights:** Text scanning and smart extraction, Clear summaries of content, Easy-to-understand explanations, Document comparison tools, Fast insights for learning and organizing

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium monthly | $4.99 | per month |
| Premium annual | $39.99 | per year |


## Frequently asked questions

### Is Möbius Sync free?

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

### Is KNOWLY AI free?

KNOWLY AI is free to download, with in-app purchases available.

### Which has better reviews, Möbius Sync or KNOWLY AI?

KNOWLY AI is rated higher. Möbius Sync averages 3.8 out of 5 from 141 ratings, while KNOWLY AI averages 5.0 from 1 ratings.

### Do Möbius Sync or KNOWLY AI have ads?

Neither Möbius Sync nor KNOWLY AI shows ads.

### Which is updated more often, Möbius Sync or KNOWLY AI?

Möbius Sync ships an update every 3 months, and KNOWLY AI every 3 days. Most recently, Möbius Sync was updated on November 3, 2026 and KNOWLY AI on October 31, 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.*