"Mattermost Classic" is the original mobile app for Mattermost. For our newer second generation mobile apps, look for "Mattermost" on the App Store.

To use this app, you need a "Server URL" from a Mattermost server v3.0+.


Mattermost is secure workplace messaging from behind your firewall.

Host your own server:

Terms of Service:

This is a reference implementation of an open source Mattermost iOS app available at:

What’s New

Version 3.10.3

- Various bug fixes
- Support for servers with APIv3 disabled

Ratings and Reviews

1.8 out of 5
6 Ratings

6 Ratings

Quadband ,

Suddenly can’t send message

Out of the blue the return key on my iPad adds a new line instead of sending my message. It’s always been slow and buggy. I don’t understand why this app is so bad.

zhw44 ,

Horrible app

Super buggy to the point where it’s essentially unusable due to sheer frustration.

The_Plague ,

Not the app you're looking for

Imagine the titillating experience I had while setting up MatterMost on my server and enjoying the chains of propriety bondage be ripped away as I could host my own version of Slack. Now imagine the complete and utter sadness that was brought before me when I installed this app.
I was able to login and just for one second, I felt as happy as an overweight sysadmin could feel before everything was ripped away. I found myself logged out. I had a mere glimpse into my team's default room, only to be immediately logged out. This feeling is all too common- rejection. Yet again, I have gotten my hopes up and what do I receive in return?
Thanks, MatterMost. You reminded me what matters most in life- the fact that I can never obtain happiness so my existence is left to be nothing more than a underpaid sysadmin with a white stained office chair.


Mattermost, Inc.
28 MB

Requires iOS 9.0 or later. Compatible with iPhone, iPad, and iPod touch.



Age Rating
Rated 4+
© Copyright 2017 Mattermost, Inc. All Rights Reserved


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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