# SynoSync vs Mellow

The clearest difference is in-app purchases: Mellow at none against SynoSync's 1. SynoSync's advantage is update cadence (every 4 days vs every 10 days). On price, ads, device support and iOS requirement there is nothing between them.

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

SynoSync ships an update every 4 days, Mellow every 10 days. The most recent releases landed on October 16, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | SynoSync | Mellow |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/synosync/id6762731663/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 4 days** | Every 10 days |
| Monetization | Free | — |
| Size | 20 MB | 4 MB |
| Requires iOS | **16.4** | 17.0 |
| Devices | **iPhone, iPad, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [成豪 董](https://appshunter.io/developer/1584985602) | [海鑫 李](https://appshunter.io/developer/6786503119) |

## What reviewers say

### 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 |


### Mellow

[App page](https://appshunter.io/ios/app/mellow-thoughtful-writing/id6791000132)

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

**In-app purchases:** none


## Frequently asked questions

### Is SynoSync free?

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

### Is Mellow free?

Mellow is free to download, with no in-app purchases.

### Do SynoSync or Mellow have ads?

Neither SynoSync nor Mellow shows ads.

### Which is updated more often, SynoSync or Mellow?

SynoSync ships an update every 4 days, and Mellow every 10 days. Most recently, SynoSync was updated on October 16, 2026 and Mellow on October 7, 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.*