# TwinViewer vs かんたんタイムスタンプ

The clearest difference is update cadence: かんたんタイムスタンプ at every 2 weeks against TwinViewer's monthly. かんたんタイムスタンプ also leads on iOS requirement (17.0 vs 26.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. TwinViewer sells 4 one-off in-app purchases and かんたんタイムスタンプ sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

TwinViewer ships an update monthly, かんたんタイムスタンプ every 2 weeks. The most recent releases landed on November 12, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | TwinViewer | かんたんタイムスタンプ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (23 ratings)](https://appshunter.io/ios/app/twinviewer/id531595249/reviews)** | — |
| Number of ratings | **23** | — |
| Positive reviews | 62.7% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 2 weeks** |
| Monetization | Free | — |
| Size | 6 MB | 6 MB |
| Requires iOS | 26.0 | **17.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Masako Sakanashi](https://appshunter.io/developer/410497749) | [RAINBOW TREE LLC](https://appshunter.io/developer/1619997282) |

## What reviewers say

### TwinViewer

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

Easily compare and manage photos from two albums simultaneously. This tool allows side-by-side viewing, zooming, and deletion of unwanted images. Create combined images and view EXIF data for detailed analysis.

**Highlights:** Side-by-side album viewing, Photo comparison and selection, Delete and sort photos, Create combined images, View EXIF data, Zoom and full-screen modes

**Features:** Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Version | Free | one-time |
| Buy Me a Coffee | $3.00 | one-time |
| Buy Me Lunch | $5.00 | one-time |
| Big Thank-You | $10.00 | one-time |


### かんたんタイムスタンプ

[App page](https://appshunter.io/ios/app/id6796752742)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Easy Timestamp Pro | $4.99 | one-time |


## Frequently asked questions

### Is TwinViewer free?

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

### Is かんたんタイムスタンプ free?

かんたんタイムスタンプ is free to download, with in-app purchases available.

### Do TwinViewer or かんたんタイムスタンプ have ads?

Neither TwinViewer nor かんたんタイムスタンプ shows ads.

### Which is updated more often, TwinViewer or かんたんタイムスタンプ?

TwinViewer ships an update monthly, and かんたんタイムスタンプ every 2 weeks. Most recently, TwinViewer was updated on November 12, 2026 and かんたんタイムスタンプ on October 31, 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.*