# AI嘴替 vs SynoSync

The clearest difference is device support: SynoSync at 3 against AI嘴替's 1. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. AI嘴替 sells 2 in-app purchases, starting at $2.99 per 7 days and SynoSync sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

AI嘴替 ships an update weekly, SynoSync every 4 days. The most recent releases landed on September 15, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | AI嘴替 | SynoSync |
| --- | --- | --- |
| 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 | Yes |
| Ads | No | No |
| Update frequency | Weekly | **Every 4 days** |
| Monetization | — | Free |
| Size | 22 MB | 20 MB |
| Requires iOS | 17.0 | **16.4** |
| Devices | iPhone | **iPhone, iPad, Mac** |
| Age rating | 17+ | 4+ |
| Developer | [正 张](https://appshunter.io/developer/1883579299) | [成豪 董](https://appshunter.io/developer/1584985602) |

## What reviewers say

### AI嘴替

[App page](https://appshunter.io/ios/app/ai/id6760478572)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Pass | $2.99 | per 7 days |
| Credits Pack | $2.99 | one-time |


### 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 AI嘴替 free?

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

### Is SynoSync free?

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

### Do AI嘴替 or SynoSync have ads?

Neither AI嘴替 nor SynoSync shows ads.

### Which is updated more often, AI嘴替 or SynoSync?

AI嘴替 ships an update weekly, and SynoSync every 4 days. Most recently, AI嘴替 was updated on September 15, 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.*