Mattermost 4+

Mattermost, Inc.

    • 4.6 • 2.5K Ratings
    • Free



Requires Mattermost Server v7.8.0+. Older servers may not be able to connect or have unexpected behavior.


Mattermost is an open source platform for secure collaboration across the entire software development lifecycle.

- Keep all of your team communications in one place.
- Orchestrate work across your tools and teams.
- Plan projects and hit milestones.
- Unite your entire technology stack through a single point of collaboration.
- Meet the strictest security, privacy, and compliance requirements.

To use this app, you need a URL for a Mattermost server.


Deploy your own server:

Terms of Service:

Contribute to the project:

What’s New

Version v2.8.0

iPhone 5s devices and later with iOS 12.1+ is required. Server version v7.8.0 or later is required.

- Calls: Added incoming call notifications for Direct Message and Group Message calls.
- Added some performance improvements.
- Removed unneeded requests to the server with malformed mentions.
- Added toast info when the Copy Info button is tapped on the About screen.
- Slightly improved performance of Markdown rendering.
- Added a limit to the maximum complexity of Markdown rendered.
- Removed some inconsistencies between mobile and browser in the way Direct Messages are shown in the sidebar.
- The Member/Admin label is now correctly shown inside the Members screen when managing users.
- Fixed UI issues with the Mark all as read button where the Thread disappeared when the font size was too large.
- Fixed an issue where users could not scroll down the acknowledgement bottom sheet in the user list when there were many users.
- Fixed a potential issue causing Calls sessions to be stuck.

Ratings and Reviews

4.6 out of 5
2.5K Ratings

2.5K Ratings

ntwrkguru ,

Bugs, lagging feature parity, and poor support

Unfortunately, I’m forced to use this service for my job but it’s definitely not Slack. First, there are a lot of bugs with the server, the Mac client, and the iOS app. Specifically to the iOS app, there are “stuck” notifications on the app icon. Secondly, support is pretty much non-existent unless you want to go through a hassle of opening a GiuHub issue and hoping someone looks at it. Open-source should not equal poor support. Lastly, the feature parity is just not there.

This app works, apart from the notification bug, so I’ll give it 3 stars. But the overall service and apps combined is pretty awful. I can’t believe people would pay for an “Enterprise” license given its issues.

[update] Took a YEAR for the developers to respond to this, and then it’s a “try our new version”. In that time, we moved to Slack and now to Teams. Sorry, but that’s just too slow. I mean, it does work, but I would never choose it for wide scale Enterprise use.

Developer Response ,

Hi there, appreciate your feedback. Can you attempt to upgrade to our latest release and try again? Our support team is really helpful and always available at if your issues persist

Anon.111 ,

Buggy as can be.

Look, I decided to implement this instead of Slack for my company because I can host on prem and have total control over the functionality. It also ties in nicely with Jira and other well known webhooks: Cloudwatch, Jira etc. But my god, is this the buggiest software/app. Notifications sometimes send (we’re on the enterprise version) - the notification server works when it wants to. If you’re on your phone while a Mattermost notification comes through, you won’t see the pop up. If you’re lucky you’ll see a badge number, but that’s rare. If you do get a badge number, it won’t go away until you log out which is a pain especially if you’re using 2FA. It’s odd, because Mattermost is supposed to be Enterprise level, and their interface is so nice and nice to use, but for whatever reason they can’t seem to iron out all their bugs. How hard is it to fix a badge icon? Or actually push notifications? What’s funny is that on this latest release it says badge icon issue fixed - I updated - and the issue is still there. Ughh. What can you do? Fix your bugs Mattermost!

Developer Response ,

Hi there, can you attempt to upgrade to our latest release and try again? We've addressed some issues around badges and notifications. Please contact our support team if your issue persists at

Sarahtwinmom ,

Bugs introduced with latest releases

Unfortunately this app is getting worse instead of improving with the newest releases. It used to be a super helpful addition to using the desktop app, but now I have to click into each individual channel to see if there are new messages, which didn’t used to be the case, and the status messages for each individual direct message channel are stuck, so I can no longer skim through and see who’s online at any given time unless I walk back to my desktop and check. Also, if I answer a message on the desktop, now, the notification on the phone doesn’t go away unless I also click all the way in to the app and into the message that is no longer new, which means I really never have any idea if I have messages waiting unless I’m actively looking for them.

Submitted feedback more than once to their feedback bot. No change.

Developer Response ,

Hi there, thank you for reporting this. We'd be happy to investigate these issues further. Would you be open to sharing more details, including your server version and reproduction steps by opening a GitHub issue here

App Privacy

The developer, Mattermost, Inc., indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Linked to You

The following data may be collected but it is not linked to your identity:

  • Identifiers
  • Usage Data
  • Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More

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