# 压缩专家 vs 数形加油站HD

The clearest difference is ads: 数形加油站HD at none against 压缩专家's shown. 数形加油站HD also leads on update cadence (every 3 weeks vs every 2 months) and iOS requirement (9.0 vs 14.0). 压缩专家's advantage is device support (3 vs 1). On price and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

压缩专家 ships an update every 2 months, 数形加油站HD every 3 weeks. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | 压缩专家 | 数形加油站HD |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.2 (76 ratings)](https://appshunter.io/ios/app/id1482479741/reviews)** | — |
| Number of ratings | **76** | — |
| Positive reviews | 62.5% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | Ad-supported | — |
| Size | 98 MB | 191 MB |
| Requires iOS | 14.0 | **9.0** |
| Devices | **iPhone, iPad, iPod** | iPad |
| Age rating | 4+ | 4+ |
| Developer | [岚 赵](https://appshunter.io/developer/1352261434) | [Beijing Ruozhuo Technology Co., Ltd](https://appshunter.io/developer/1758901031) |

## What reviewers say

### 压缩专家

[App page](https://appshunter.io/ios/app/id1482479741)

This tool efficiently compresses various file types including documents, videos, audio, and images. It helps optimize phone storage by cleaning up duplicate photos and unnecessary data, making file transfer and sharing easier.

**Highlights:** Full-format file compression, Quick packaging and sharing, Intelligent photo album optimization, Deep phone storage cleanup, Supports documents, videos, audio, images, PDFs, GIFs

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

**In-app purchases:** none


### 数形加油站HD

[App page](https://appshunter.io/ios/app/hd/id6751450237)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 压缩专家 free?

压缩专家 is free to download, with no in-app purchases.

### Is 数形加油站HD free?

数形加油站HD is free to download, with no in-app purchases.

### Do 压缩专家 or 数形加油站HD have ads?

压缩专家 shows ads; 数形加油站HD does not.

### Which is updated more often, 压缩专家 or 数形加油站HD?

压缩专家 ships an update every 2 months, and 数形加油站HD every 3 weeks. Most recently, 压缩专家 was updated on October 24, 2026 and 数形加油站HD on October 25, 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.*