# SyncML LITE 4 vs SynoSync

The clearest difference is rating: SynoSync at 5.0 against SyncML LITE 4's 1.7. SynoSync also leads on update cadence (every 4 days vs every 26 months). SyncML LITE 4's advantage is in-app purchases (none vs 1) and iOS requirement (10.0 vs 16.4). On price, ratings volume, ads and monetization model there is nothing between them.

Both are free to download. SynoSync sells 1 one-off in-app purchase. SyncML LITE 4 asks for nothing beyond the download.

SynoSync holds the better App Store score, 5.0 against 1.7. Both are backed by a comparable volume of ratings — 3 and 2 respectively.

SyncML LITE 4 ships an update every 26 months, SynoSync every 4 days. The most recent releases landed on October 5, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | SyncML LITE 4 | SynoSync |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.7 (3 ratings)](https://appshunter.io/ios/app/syncml-lite-4/id1170925516/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/synosync/id6762731663/reviews)** |
| Number of ratings | **3** | 2 |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 26 months | **Every 4 days** |
| Monetization | Free | Free |
| Size | 6 MB | 20 MB |
| Requires iOS | **10.0** | 16.4 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Lukas Zeller](https://appshunter.io/developer/299521020) | [成豪 董](https://appshunter.io/developer/1584985602) |

## What reviewers say

### SyncML LITE 4

[App page](https://appshunter.io/ios/app/syncml-lite-4/id1170925516)

This app synchronizes iOS contacts with servers using the legacy SyncML standard. It's designed for users who specifically need this older technology, often recommended by IT departments. It can also act as a local SyncML server for older devices.

**Highlights:** Contacts-only synchronization, SyncML engine, Syncs selected iOS contact stores, Acts as local SyncML server, Assign/remove contact group membership

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

**In-app purchases:** none


### SynoSync

[App page](https://appshunter.io/ios/app/synosync/id6762731663)

This app synchronizes files between your iOS device and Synology NAS, WebDAV, or SMB servers. It integrates seamlessly with the iOS Files app, offering multiple sync modes and conflict resolution options for efficient file management.

**Highlights:** Synology NAS, WebDAV, SMB support, iOS Files app integration, Server-to-Local sync, Local-to-Server sync, Two-Way synchronization, Flexible conflict resolution, Background syncing

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SynoSync-Plus | $4.99 | one-time |


## Frequently asked questions

### Is SyncML LITE 4 free?

SyncML LITE 4 is free to download, with no in-app purchases.

### Is SynoSync free?

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

### Which has better reviews, SyncML LITE 4 or SynoSync?

SynoSync is rated higher. SyncML LITE 4 averages 1.7 out of 5 from 3 ratings, while SynoSync averages 5.0 from 2 ratings.

### Do SyncML LITE 4 or SynoSync have ads?

Neither SyncML LITE 4 nor SynoSync shows ads.

### Which is updated more often, SyncML LITE 4 or SynoSync?

SyncML LITE 4 ships an update every 26 months, and SynoSync every 4 days. Most recently, SyncML LITE 4 was updated on October 5, 2026 and SynoSync on October 1, 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.*