# 后湾 vs Syna

The clearest difference is in-app purchases: Syna at none against 后湾's 3. 后湾's advantage is update cadence (every 2 days vs weekly). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. 后湾 sells 3 in-app purchases, starting at $2.99 per 7 days. Syna asks for nothing beyond the download.

后湾 ships an update every 2 days, Syna weekly. The most recent releases landed on October 25, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | 后湾 | Syna |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 days** | Weekly |
| Size | 110 MB | 82 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 17+ |
| Developer | [Jiangyu Technologies](https://appshunter.io/developer/1657976686) | [Synapse Information](https://appshunter.io/developer/1868243885) |

## What reviewers say

### 后湾

[App page](https://appshunter.io/ios/app/id1663608485)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1周 | $2.99 | per 7 days |
| 1个月 | $7.99 | per month |
| 3个月 | $19.99 | per 3 months |


### Syna

[App page](https://appshunter.io/ios/app/syna-share-and-inspire/id6757681418)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 后湾 free?

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

### Is Syna free?

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

### Do 后湾 or Syna have ads?

Neither 后湾 nor Syna shows ads.

### Which is updated more often, 后湾 or Syna?

后湾 ships an update every 2 days, and Syna weekly. Most recently, 后湾 was updated on October 25, 2026 and Syna 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.*