# 图片转压 vs TieYulan

The clearest difference is in-app purchases: 图片转压 at none against TieYulan's 1. TieYulan's advantage is update cadence (every 9 days vs every 12 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. TieYulan sells 1 one-off in-app purchase. 图片转压 asks for nothing beyond the download.

图片转压 ships an update every 12 months, TieYulan every 9 days. The most recent releases landed on October 27, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | 图片转压 | TieYulan |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 12 months | **Every 9 days** |
| Size | 83 MB | 27 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [静 胡](https://appshunter.io/developer/1687913013) | [春华 兰](https://appshunter.io/developer/1869338884) |

## What reviewers say

### 图片转压

[App page](https://appshunter.io/ios/app/id6479608625)

**Features:** macOS Compatibility

**In-app purchases:** none


### TieYulan

[App page](https://appshunter.io/ios/app/tieyulan/id6757894231)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 100 AI Generation Credits | $24.99 | one-time |


## Frequently asked questions

### Is 图片转压 free?

图片转压 is free to download, with no in-app purchases.

### Is TieYulan free?

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

### Do 图片转压 or TieYulan have ads?

Neither 图片转压 nor TieYulan shows ads.

### Which is updated more often, 图片转压 or TieYulan?

图片转压 ships an update every 12 months, and TieYulan every 9 days. Most recently, 图片转压 was updated on October 27, 2026 and TieYulan on October 24, 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.*