# PicDiff vs 图片对比

The clearest difference is price: PicDiff at Free against 图片对比's $0.99. PicDiff also leads on update cadence (monthly vs every 20 months). 图片对比's advantage is in-app purchases (none vs 1) and ads (none vs shown). On device support and iOS requirement there is nothing between them.

PicDiff is free to download; 图片对比 costs $0.99 up front. PicDiff sells 1 one-off in-app purchase. 图片对比 asks for nothing beyond the download.

PicDiff ships an update monthly, 图片对比 every 20 months. The most recent releases landed on September 25, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | PicDiff | 图片对比 |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | **[4.5 (2 ratings)](https://appshunter.io/ios/app/picdiff/id1266238855/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Monthly** | Every 20 months |
| Monetization | Free with in-app purchases | — |
| Size | 23 MB | 1 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Aceca Corp.](https://appshunter.io/developer/983165401) | [飞 陈](https://appshunter.io/developer/1499198751) |

## What reviewers say

### PicDiff

[App page](https://appshunter.io/ios/app/picdiff/id1266238855)

Compare photos with precision by overlaying two images. Analyze subtle differences down to the pixel with an intuitive and user-friendly interface, perfect for professionals and enthusiasts alike.

**Highlights:** Overlay comparisons, Pixel-level precision, User-friendly interface, In-depth photo analysis, Subtle variation detection

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Upgrade | $17.99 | one-time |


### 图片对比

[App page](https://appshunter.io/ios/app/id1490431826)

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

**In-app purchases:** none


## Frequently asked questions

### Is PicDiff free?

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

### Is 图片对比 free?

图片对比 costs $0.99, with no in-app purchases.

### Do PicDiff or 图片对比 have ads?

PicDiff shows ads; 图片对比 does not.

### Which is updated more often, PicDiff or 图片对比?

PicDiff ships an update monthly, and 图片对比 every 20 months. Most recently, PicDiff was updated on September 25, 2026 and 图片对比 on September 10, 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.*