# MailCat vs Exo

The clearest difference is price: Exo at Free against MailCat's $3.99. Exo also leads on rating (5.0 vs 1.0). MailCat's advantage is update cadence (every 4 months vs every 15 months). On ratings volume, ads, in-app purchases and device support there is nothing between them.

Exo is free to download; MailCat costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Exo holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

MailCat ships an update every 4 months, Exo every 15 months. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | MailCat | Exo |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | [1.0 (1 ratings)](https://appshunter.io/ios/app/mailcat/id459361669/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/exo-file-uploader/id1631050658/reviews)** |
| Number of ratings | 1 | 1 |
| Positive reviews | 13.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 15 months |
| Monetization | Paid | **Free** |
| Size | 4 MB | 21 MB |
| Requires iOS | 16.6 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Seimitsusakufu LLC](https://appshunter.io/developer/459361672) | [Jaydon Lynch](https://appshunter.io/developer/1463135375) |

## What reviewers say

### MailCat

[App page](https://appshunter.io/ios/app/mailcat/id459361669)

This app helps organize your inbox by automatically categorizing emails using machine learning and custom rules. It can filter spam and move messages to designated mailboxes, supporting IMAP accounts.

**Highlights:** Machine learning spam filtering, Rule-based email categorization, IMAP account support, Move emails to specified mailboxes, Blacklist and spam learning data, Multiple account switching

**Features:** Vision Pro support

**In-app purchases:** none


### Exo

[App page](https://appshunter.io/ios/app/exo-file-uploader/id1631050658)

Securely store and share files with decentralized, encrypted storage. Organize, preview, and rename files effortlessly with an intuitive interface. Enjoy lightning-fast access and enhanced privacy with no central servers.

**Highlights:** Decentralized encrypted storage, Automatic file organization, Instant file previews, Secure file sharing, Edit file names, Lightning-fast access

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is MailCat free?

MailCat costs $3.99, with no in-app purchases.

### Is Exo free?

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

### Which has better reviews, MailCat or Exo?

Exo is rated higher. MailCat averages 1.0 out of 5 from 1 ratings, while Exo averages 5.0 from 1 ratings.

### Do MailCat or Exo have ads?

Neither MailCat nor Exo shows ads.

### Which is updated more often, MailCat or Exo?

MailCat ships an update every 4 months, and Exo every 15 months. Most recently, MailCat was updated on November 1, 2026 and Exo on November 3, 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.*