# TwinViewer vs AlphaFTP

The clearest difference is review sentiment: TwinViewer at 64% against AlphaFTP's 0%. TwinViewer also leads on price (Free vs $9.99) and ratings volume (24 vs 1). AlphaFTP's advantage is rating (5.0 vs 4.0) and in-app purchases (none vs 1). On ads, device support and iOS requirement there is nothing between them.

TwinViewer is free to download; AlphaFTP costs $9.99 up front. TwinViewer sells 1 one-off in-app purchase. AlphaFTP asks for nothing beyond the download.

AlphaFTP holds the better App Store score, 5.0 against 4.0. That said, the two scores are not equally well evidenced: TwinViewer has 24 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 64% of TwinViewer's written reviews are positive against 0% of AlphaFTP's, so the app with the better star average is not the one people write more warmly about.

TwinViewer ships an update every 5 weeks, AlphaFTP every 3 days. The most recent releases landed on October 10, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | TwinViewer | AlphaFTP |
| --- | --- | --- |
| Price | **Free** | $9.99 |
| Rating | [4.0 (24 ratings)](https://appshunter.io/ios/app/twinviewer/id531595249/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/alphaftp/id6777174817/reviews)** |
| Number of ratings | **24** | 1 |
| Positive reviews | **64.0% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Every 3 days** |
| Monetization | **Free with in-app purchases** | Paid |
| Size | 1 MB | 6 MB |
| Requires iOS | 16.0 | 16.0 |
| Devices | iPhone, iPad | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Masako Sakanashi](https://appshunter.io/developer/410497749) | [Kristopher Linquist](https://appshunter.io/developer/921302972) |

## 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 |


### AlphaFTP

[App page](https://appshunter.io/ios/app/alphaftp/id6777174817)

This app allows photographers to wirelessly transfer photos directly from compatible Sony Alpha cameras to an iPhone, iPad, or Mac. It supports saving images to folders, importing them into the Photos library, and viewing them full-screen with EXIF data as they are received.

**Highlights:** Direct Sony Alpha camera-to-iOS FTP transfers, Save photos to a folder, Import uploads into Photos library, Live connection and upload activity, View photos full-screen with EXIF data, Built-in Sony camera setup guide

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is TwinViewer free?

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

### Is AlphaFTP free?

AlphaFTP costs $9.99, with no in-app purchases.

### Which has better reviews, TwinViewer or AlphaFTP?

AlphaFTP is rated higher. TwinViewer averages 4.0 out of 5 from 24 ratings, while AlphaFTP averages 5.0 from 1 ratings.

### Do TwinViewer or AlphaFTP have ads?

Neither TwinViewer nor AlphaFTP shows ads.

### Which is updated more often, TwinViewer or AlphaFTP?

TwinViewer ships an update every 5 weeks, and AlphaFTP every 3 days. Most recently, TwinViewer was updated on October 10, 2026 and AlphaFTP on October 15, 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.*