# Mattermost vs AVI

The clearest difference is update cadence: Mattermost at every 8 days against AVI's every 4 months. AVI's advantage is iOS requirement (14.0 vs 16.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Mattermost ships an update every 8 days, AVI every 4 months. The most recent releases landed on September 25, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | Mattermost | AVI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (5.6K ratings)](https://appshunter.io/ios/app/mattermost/id1257222717/reviews)** | — |
| Number of ratings | **5.6K** | — |
| Positive reviews | 37.6% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 8 days** | Every 4 months |
| Monetization | Free | — |
| Size | 93 MB | 149 MB |
| Requires iOS | 16.0 | **14.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Mattermost, Inc.](https://appshunter.io/developer/654282837) | [KGSD Consulting LLC](https://appshunter.io/developer/1531744684) |

## What reviewers say

### Mattermost

[App page](https://appshunter.io/ios/app/mattermost/id1257222717)

This platform enables secure messaging, file sharing, and workflow automation for critical industries. It offers voice calls, project management, and enterprise mobility management for enhanced collaboration and data control.

**Highlights:** Secure messaging, file, and link sharing, 1:1 and group voice calls, Workflow automation with Playbook, Enterprise Mobility Management support, Private mobility with ID-only push notifications

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 🚀 Fast and responsive
- 🔒 Secure self-hosted solution
- 👍 Great Slack alternative
- 💡 Customizable and extensible
- 🧲 Integrates well with other tools

**What reviewers complain about**

- 🐛 Buggy and unstable
- 🔑 Frustrating login/authentication issues
- 🔔 Inconsistent or missing notifications
- 🖼️ Trouble with image/file uploads
- 🕰️ Slow performance and lag

**Reported bugs**

- Crashes on startup
- Unread message indicators not working
- Keyboard issues on iPad/desktop
- Compatibility problems with iOS 17+
- Randomly logs users out

**Requested features**

- Add voice messaging capability
- Improve multi-server support
- Integrate end-to-end encryption
- Introduce iPad-optimized layout
- Provide more customization options


### AVI

[App page](https://appshunter.io/ios/app/avi-chat/id1558771792)

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

**In-app purchases:** none


## Frequently asked questions

### Is Mattermost free?

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

### Is AVI free?

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

### Do Mattermost or AVI have ads?

Neither Mattermost nor AVI shows ads.

### Which is updated more often, Mattermost or AVI?

Mattermost ships an update every 8 days, and AVI every 4 months. Most recently, Mattermost was updated on September 25, 2026 and AVI on September 10, 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.*