# 工程相机 vs Auto Gray Remove Background

The clearest difference is review sentiment: 工程相机 at 75% against Auto Gray Remove Background's 0%. 工程相机 also leads on rating (4.0 vs 3.0) and update cadence (monthly vs every 5 months). Auto Gray Remove Background's advantage is ads (none vs shown) and iOS requirement (9.0 vs 13.0). On price, ratings volume, in-app purchases and device support there is nothing between them.

Both are free to download. 工程相机 sells 10 one-off in-app purchases and Auto Gray Remove Background sells 1 in-app purchase, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

工程相机 holds the better App Store score, 4.0 against 3.0. Both are backed by a comparable volume of ratings — 4 and 2 respectively. Written reviews point the same way: 75% of 工程相机's written reviews are positive against 0% of Auto Gray Remove Background's.

工程相机 ships an update monthly, Auto Gray Remove Background every 5 months. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | 工程相机 | Auto Gray Remove Background |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (4 ratings)](https://appshunter.io/ios/app/id1441878925/reviews)** | [3.0 (2 ratings)](https://appshunter.io/ios/app/auto-gray-remove-background/id1460545841/reviews) |
| Number of ratings | **4** | 2 |
| Positive reviews | **75.0% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Monthly** | Every 5 months |
| Monetization | — | Free with in-app purchases |
| Size | 153 MB | 14 MB |
| Requires iOS | 13.0 | **9.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Xiao Pang Xie (Xiamen) Information Technology Co., Ltd.](https://appshunter.io/developer/1441780348) | [俊华 罗](https://appshunter.io/developer/1339023360) |

## What reviewers say

### 工程相机

[App page](https://appshunter.io/ios/app/id1441878925)

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 去水印（15点） | $0.99 | one-time |
| 无广告VIP(一个月) | $0.99 | one-time |
| VIP1(一个月) | $3.99 | one-time |
| SVIP1(一个月) | $4.99 | one-time |
| VIP2(一个月) | $9.99 | one-time |
| SVIP2(一个月) | $14.99 | one-time |
| VIP3(一个月) | $19.99 | one-time |
| SVIP3(一个月) | $24.99 | one-time |
| VIP4(一个月) | $29.99 | one-time |
| SVIP4(一个月) | $39.99 | one-time |


### Auto Gray Remove Background

[App page](https://appshunter.io/ios/app/auto-gray-remove-background/id1460545841)

Effortlessly remove or change photo backgrounds with a single tap. This AI-powered tool automates the entire process, eliminating the need for manual pixel selection or masking. Enjoy a seamless background editing experience.

**Highlights:** Automatic background removal, One-tap background change, No manual pixel selection, AI-powered editing, Ad-free Pro version

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Version | $0.99 | per month |


## Frequently asked questions

### Is 工程相机 free?

工程相机 is free to download, with in-app purchases available.

### Is Auto Gray Remove Background free?

Auto Gray Remove Background is free to download, with in-app purchases available.

### Which has better reviews, 工程相机 or Auto Gray Remove Background?

工程相机 is rated higher. 工程相机 averages 4.0 out of 5 from 4 ratings, while Auto Gray Remove Background averages 3.0 from 2 ratings.

### Do 工程相机 or Auto Gray Remove Background have ads?

工程相机 shows ads; Auto Gray Remove Background does not.

### Which is updated more often, 工程相机 or Auto Gray Remove Background?

工程相机 ships an update monthly, and Auto Gray Remove Background every 5 months. Most recently, 工程相机 was updated on November 2, 2026 and Auto Gray Remove Background on November 3, 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.*