# PicDiff vs ZMK Editor

The clearest difference is ads: ZMK Editor at none against PicDiff's shown. ZMK Editor also leads on update cadence (every 4 days vs monthly). PicDiff's advantage is iOS requirement (12.0 vs 17.0). On price, in-app purchases and device support there is nothing between them.

Both are free to download. PicDiff sells 1 one-off in-app purchase and ZMK Editor sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

PicDiff ships an update monthly, ZMK Editor every 4 days. The most recent releases landed on November 3, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | PicDiff | ZMK Editor |
| --- | --- | --- |
| Price | Free | Free |
| 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 | Yes |
| Ads | Yes | **No** |
| Update frequency | Monthly | **Every 4 days** |
| Monetization | Free with in-app purchases | — |
| Size | 23 MB | 31 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Aceca Corp.](https://appshunter.io/developer/983165401) | [Shingo Matsuda](https://appshunter.io/developer/6775475954) |

## 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 |


### ZMK Editor

[App page](https://appshunter.io/ios/app/zmk-editor/id6775475952)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Access | $9.99 | one-time |


## Frequently asked questions

### Is PicDiff free?

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

### Is ZMK Editor free?

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

### Do PicDiff or ZMK Editor have ads?

PicDiff shows ads; ZMK Editor does not.

### Which is updated more often, PicDiff or ZMK Editor?

PicDiff ships an update monthly, and ZMK Editor every 4 days. Most recently, PicDiff was updated on November 3, 2026 and ZMK Editor on November 5, 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.*