# 数字空压站 vs Device Preview Exporter

The clearest difference is in-app purchases: 数字空压站 at none against Device Preview Exporter's 1. 数字空压站 also leads on ads (none vs shown). Device Preview Exporter's advantage is update cadence (every 10 days vs every 2 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Device Preview Exporter sells 1 one-off in-app purchase. 数字空压站 asks for nothing beyond the download.

数字空压站 ships an update every 2 months, Device Preview Exporter every 10 days. Both last shipped on October 30, 2026.

## The numbers

| Metric | 数字空压站 | Device Preview Exporter |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Every 10 days** |
| Size | 76 MB | 76 MB |
| Requires iOS | 11.0 | 11.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [苏州汇川技术有限公司](https://appshunter.io/developer/1441943965) | [博 彭](https://appshunter.io/developer/1293268076) |

## What reviewers say

### 数字空压站

[App page](https://appshunter.io/ios/app/id6447392098)

**Features:** macOS Compatibility

**In-app purchases:** none


### Device Preview Exporter

[App page](https://appshunter.io/ios/app/device-preview-exporter/id6467133500)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| UpgradeToPro | $0.99 | one-time |


## Frequently asked questions

### Is 数字空压站 free?

数字空压站 is free to download, with no in-app purchases.

### Is Device Preview Exporter free?

Device Preview Exporter is free to download, with in-app purchases available.

### Do 数字空压站 or Device Preview Exporter have ads?

Device Preview Exporter shows ads; 数字空压站 does not.

### Which is updated more often, 数字空压站 or Device Preview Exporter?

数字空压站 ships an update every 2 months, and Device Preview Exporter every 10 days. Most recently, 数字空压站 was updated on October 30, 2026 and Device Preview Exporter on October 30, 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.*