Mattermost

4.6
17.7K reviews
1M+
Downloads
Content rating
Rated for 3+
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About this app

Requires Mattermost Server v10.5.0+. Older servers may not be able to connect or have unexpected behavior.

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Mattermost is secure workplace messaging from behind your firewall.

- Discuss topics in private groups, one-to-one or team-wide
- Easily share and view image files
- Connect in-house systems with webhooks and Slack-compatible integrations

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

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Host your own server: https://about.mattermost.com/download

Terms of Service: http://about.mattermost.com/terms/

Contribute to the project: https://github.com/mattermost/mattermost-mobile
Updated on
21 Oct 2025

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region and age. The developer provided this information and may update it over time.
No data shared with third parties
Learn more about how developers declare sharing
This app may collect these data types
Personal info, Messages and 3 others
Data is encrypted in transit
Data can’t be deleted

Ratings and reviews

4.6
17.2K reviews
Valery Ushakov
10 September 2024
It's impossible to customize fonts in either the mobile or desktop apps. On top of that the mobile app doesn't cope with system-wide font zoom, and clips pixels off of text in text fields, etc. This makes your product a source of constant eye strain, pain, and discomfort. I hope the positive "impact on [your] first page load time" was worth it...
Did you find this helpful?
Mattermost
10 September 2024
Hi there, feel free to share any feature requests on Uservoice here https://mattermost.uservoice.com/forums/306457-general.
Alf W
29 October 2025
5 stars if I wouldn't have a weird bug where it always forgets the servers. I have to add them every time I start the app. Notifications work though
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Mattermost
29 October 2025
Thank you for the feedback, would you be able to help share reproduction steps and your Mattermost server version? Feel free to open a new issue with details at https://github.com/mattermost/mattermost-mobile/issues.
Emily Anderson
7 November 2025
server cant be reached. constantly out of date and out of sync. Just overall horrible to use on a mobile device.
Did you find this helpful?
Mattermost
7 November 2025
Thank you for the feedback, would you be able to help share reproduction steps and your Mattermost server version? Feel free to open a new issue with details at https://github.com/mattermost/mattermost-mobile/issues.

What's new

Requires Mattermost server v10.5.0+ to avoid incompatibilities and crashes. Requires Android 7.0 or higher.

- Fixed an issue where links would change colors when navigating to a channel with a channel banner.