# TwinViewer vs Images Comparison

The clearest difference is rating: Images Comparison at 4.9 against TwinViewer's 4.0. Images Comparison also leads on review sentiment (100% vs 64%) and monetization model (free vs free with in-app purchases). TwinViewer's advantage is iOS requirement (16.0 vs 18.0). On price, ratings volume, update cadence and ads there is nothing between them.

Both are free to download. TwinViewer sells 1 one-off in-app purchase and Images Comparison sells 4 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Images Comparison holds the better App Store score, 4.9 against 4.0. Both are backed by a comparable volume of ratings — 24 and 14 respectively. Written reviews point the same way: 64% of TwinViewer's written reviews are positive against 100% of Images Comparison's.

TwinViewer ships an update every 5 weeks, Images Comparison every 2 months. The most recent releases landed on September 17, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | TwinViewer | Images Comparison |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (24 ratings)](https://appshunter.io/ios/app/twinviewer/id531595249/reviews) | **[4.9 (14 ratings)](https://appshunter.io/ios/app/images-comparison/id1639770274/reviews)** |
| Number of ratings | **24** | 14 |
| Positive reviews | 64.0% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 2 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 1 MB | 3 MB |
| Requires iOS | **16.0** | 18.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Masako Sakanashi](https://appshunter.io/developer/410497749) | [Jumpei Adachi](https://appshunter.io/developer/1516414955) |

## What reviewers say

### TwinViewer

[App page](https://appshunter.io/ios/app/twinviewer/id531595249)

View and compare two photo albums side-by-side. This app allows you to pick the best shots, delete unwanted ones, create combined images, and access detailed EXIF data. It offers intuitive gestures for navigation and zooming.

**Highlights:** Dual-screen photo viewing, Side-by-side photo comparison, Create combined images, View EXIF data, Zoom and swipe navigation, Sync/Async viewer modes

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Version | $4.99 | one-time |


### Images Comparison

[App page](https://appshunter.io/ios/app/images-comparison/id1639770274)

Easily compare two images side-by-side. This app allows you to slide between images to highlight differences or similarities. Perfect for visual analysis and detailed review.

**Highlights:** Side-by-side image comparison, Sliding width adjustment, Highlighting visual differences, Detailed image review

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 寄付A | $0.99 | one-time |
| 寄付B | $2.99 | one-time |
| Paid Version | $2.99 | one-time |
| 寄付C | $5.99 | one-time |


## Frequently asked questions

### Is TwinViewer free?

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

### Is Images Comparison free?

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

### Which has better reviews, TwinViewer or Images Comparison?

Images Comparison is rated higher. TwinViewer averages 4.0 out of 5 from 24 ratings, while Images Comparison averages 4.9 from 14 ratings.

### Do TwinViewer or Images Comparison have ads?

Neither TwinViewer nor Images Comparison shows ads.

### Which is updated more often, TwinViewer or Images Comparison?

TwinViewer ships an update every 5 weeks, and Images Comparison every 2 months. Most recently, TwinViewer was updated on September 17, 2026 and Images Comparison on September 8, 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.*