# Image Compare. — Compare two images quickly.

> Tool for comparing two images with multiple viewing modes and zoom functionality. (iPhone/iPad app by Reiji Kobayashi.)

- Source: https://appshunter.io/ios/app/image-compare/id1544276764 (this page in markdown: same URL + `.md`)
- Developer: [Reiji Kobayashi](https://appshunter.io/developer/1513077226)
- Category: Photo & Video, Utilities
- Price: Free
- Rating: 4.45/5 from 31 App Store ratings · 9 written reviews indexed
- Age rating: 4+
- Requires: iOS 13.0 · 10 MB
- Languages: English
- Released: 2020-12-15
- Data updated: 2026-09-02
- Monetization: ad-supported
- User reviews in markdown: https://appshunter.io/ios/app/image-compare/id1544276764/reviews.md

## What is Image Compare.?

Compare two photos, instantly.
From photo edits and DIY projects to plant growth records — see exactly what changed, in four powerful modes.

# Four Comparison Modes

▼ Side by Side
View both images at once.
Perfect for progress photos.

▼ Slider
Drag a slider across one image to reveal the other underneath.
Smoothly check before/after photo edits.

▼ Opacity
Overlay two images and adjust transparency.
Great for spotting alignment shifts and subtle changes.

▼ Difference
Subtract one image from the other to highlight only what's changed.
Reveals details invisible to the naked eye.
* You can save the difference image to your Photos.

# Features

・Pinch to zoom in Slide, Opacity, and Difference modes for detailed inspection.
・Two processing options for Difference mode:
  - Express: Resizes to screen width before processing (fast).
  - Original: Processes at full resolution (high accuracy, takes longer. Both images must be the same size).
・Export the difference image to Photos or share it directly.

# Privacy First

・Works completely offline. Your images never leave your device.
・Photo library access is only used when selecting images to compare.

## Key features

- Concurrent side-by-side comparison
- Slider comparison
- Opacity comparison
- Difference comparison
- Zoom for detail
- Export difference images

## Recent user reviews (9 of 9)

All indexed reviews: https://appshunter.io/ios/app/image-compare/id1544276764/reviews.md

### 5/5 — Works great, ads aren't intrusive, it's super fast.

*2025-11-03*

I have absolutely nothing to complain about. It does everything I need and then some, it's easy to use, etc. I like it a lot.

### 4/5 — Exactly what I was looking for

*2025-02-03*

Should be at the top of the search when looking for “image comparer” Edit 4/23/24: I think you need to implement a clear cache button 🫤
Response on 2/3/25: A button to clear the cached image that the app saved internally.

**Developer response:** Thank you for your review!
Could you tell me about clear cache? Does it mean that the button to clear 2 images, or the button to clear cached image that the app saved internally?

### 1/5 — Really poor. Missing simple feature necessary to compare photos

*2024-12-30*

So many of these apps just dont seem to have simple overlay tool that allows you to overlay two images, semi transparent so you can line them up and then zoom in and out, rotate so they line up perfect. Only app that seems to do it is an app called PicDiff

**Developer response:** Thank you for your advice!

### 4/5 — Exactly what I was looking for

*2024-04-24*

Should be at the top of the search when looking for “image comparer”
Edit 4/23/24: I think you need to implement a clear cache button 🫤

**Developer response:** Thank you for your review!
Could you tell me about clear cache? Does it mean that the button to clear 2 images, or the button to clear cached image that the app saved internally?

### 4/5 — Solid

*2023-11-07*

Love the app.  The only complaint is you lose the pictures often when returning to the app.  You need to keep setting them up when we you return to it.

### 5/5 — Fantastic

*2023-09-20*

As far as I can find, this is the only app on the App Store that offers the functionality of comparing two photos for pixel-peeping. A bit silly to do on a phone but I’m glad the developer has made a good app for those of us that want to do that. Will be buying the paid version to support the dev and hopefully expand the functionality of the app.

### 5/5 — Just discovered it!

*2023-08-09*

It is exactly what I needed!

### 5/5 — Exactly what I was looking for

*2023-06-26*

Should be at the top of the search when looking for “image comparer”

### 5/5 — As Advertised

*2022-10-19*

App makes it easy to compare images on iPad

## Frequently asked questions about Image Compare.

### What are the different ways to compare images in Image Compare?

Image Compare offers four distinct comparison modes: Concurrent for side-by-side viewing, Slide using a slider, Opacity by adjusting transparency, and Difference which subtracts images to highlight discrepancies.

### Can I zoom in on images while comparing them?

Yes, you can zoom to see fine details in the Slide, Opacity, and Difference comparison views within Image Compare.

### Does Image Compare allow exporting comparison results?

Yes, Image Compare enables you to export generated images specifically from the Difference view, allowing you to save the visual output of your comparisons.

### What devices is Image Compare compatible with?

Image Compare is designed for Apple devices and is supported on iPhone, iPad, and iPod.

### What is the age rating for Image Compare?

Image Compare has an age rating of 4+, making it suitable for a wide range of users.

### How often is Image Compare updated?

The latest version of Image Compare is 1.5.2, and it was last updated on September 23, 2025. Updates typically occur to improve functionality and address any issues.

### Does Image Compare have ads?

Yes, Image Compare contains advertisements to support its development and distribution.

### What is the user rating for Image Compare?

Image Compare has received positive feedback, with an average rating of 4.2 stars based on 22 user ratings.

## Version history (last 5 releases)

### 1.5.4 — 2026-05-02

Minor bug fixes and performance improvements.

### 1.5.2 — 2025-09-23

Updated with a brand-new app icon.

### 1.5.1 — 2025-09-17

Now compatible with iOS 26.

### 1.5.0 — 2025-02-03

Fine-tuning of image position is available in slide comparison and opacity comparison screens

### 1.4.1 — 2025-01-23

Fixed the tab becomes transparent.

## Apps similar to Image Compare.

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Photo Compare - Before & After](https://appshunter.io/ios/app/photo-compare-before-and-after/id1537250336) | 4.5 (2,596) | Free | Photo & Video |
| [Compare photos before after](https://appshunter.io/ios/app/compare-photos-before-after/id1091265117) | 4.5 (2) | Free | Photo & Video |
| [Collage Maker: Picture Layout](https://appshunter.io/ios/app/collage-maker-picture-layout/id6497485461) | 4.9 (42) | Free | Photo & Video |
| [Before and After:Photo Compare](https://appshunter.io/ios/app/before-and-afterphoto-compare/id1589506390) | 4.0 (21) | Free | Photo & Video |
| [similar faces](https://appshunter.io/ios/app/similar-faces/id1523619974) | 4.2 (327) | Free | Photo & Video |
| [TwinViewer](https://appshunter.io/ios/app/twinviewer/id531595249) | 4.0 (24) | Free | Photo & Video |

## More apps by Reiji Kobayashi

- [ToDo Kanban.](https://appshunter.io/ios/app/todo-kanban/id1513077227)
- [IP Address Bookmark.](https://appshunter.io/ios/app/ip-address-bookmark/id1517026198)
- [Image Compare+](https://appshunter.io/ios/app/image-compare-plus/id1524811594)
- [DropSpot Portable](https://appshunter.io/ios/app/dropspot-portable/id1539905495)
- [Photo Batch Resize & Converter](https://appshunter.io/ios/app/photo-batch-resize-and-converter/id1551730893)

All apps by Reiji Kobayashi: https://appshunter.io/developer/1513077226

## Related topics

[compare photos slide](https://appshunter.io/ios/topics/compare-photos-slide) · [gcode compare](https://appshunter.io/ios/topics/gcode-compare) · [picture comparison apps](https://appshunter.io/ios/topics/picture-comparison-apps) · [before and after photo compare slide](https://appshunter.io/ios/topics/before-and-after-photo-compare-slide) · [compare pictures](https://appshunter.io/ios/topics/compare-pictures) · [compare pro](https://appshunter.io/ios/topics/compare-pro)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-02.*