# moii.ai vs Message Viewer Pro

The clearest difference is price: moii.ai at Free against Message Viewer Pro's $3.99. moii.ai also leads on iOS requirement (15.1 vs 17.0). On update cadence, ads, in-app purchases and device support there is nothing between them.

moii.ai is free to download; Message Viewer Pro costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

moii.ai ships an update every 3 weeks, Message Viewer Pro every 5 weeks. The most recent releases landed on October 8, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | moii.ai | Message Viewer Pro |
| --- | --- | --- |
| Price | **Free** | $3.99 |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/message-viewer-pro/id6740704561/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 5 weeks |
| Monetization | — | Paid |
| Size | 40 MB | 15 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [MoiiAi Inc](https://appshunter.io/developer/1664460292) | [Matrix Logic Corporation](https://appshunter.io/developer/303074412) |

## What reviewers say

### moii.ai

[App page](https://appshunter.io/ios/app/moiiai/id1664460290)

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

**In-app purchases:** none


### Message Viewer Pro

[App page](https://appshunter.io/ios/app/message-viewer-pro/id6740704561)

Easily view EML and MSG email files, including attachments, directly on your iOS or macOS device. Share or print attachments, or compose new emails using the content of your saved messages.

**Highlights:** View EML and MSG files, Access attachments, Share attachments, Print attachments, Compose new emails from viewed messages

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

**In-app purchases:** none


## Frequently asked questions

### Is moii.ai free?

moii.ai is free to download, with no in-app purchases.

### Is Message Viewer Pro free?

Message Viewer Pro costs $3.99, with no in-app purchases.

### Do moii.ai or Message Viewer Pro have ads?

Neither moii.ai nor Message Viewer Pro shows ads.

### Which is updated more often, moii.ai or Message Viewer Pro?

moii.ai ships an update every 3 weeks, and Message Viewer Pro every 5 weeks. Most recently, moii.ai was updated on October 8, 2026 and Message Viewer Pro on October 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.*