Mattermost vs GAM
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Mattermost
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.
- 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
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Requires Mattermost Server v11.7.0+. Older servers may not be able to connect or have unexpected behavior. ------- Mattermost is the leading collaborative workflow platform for defense, intelligence, security, and critical infrastructure. The platform runs on-premises and in private clouds, delivering secure messaging, file sharing, workflow automation, audio/screenshare, and project management—all with full data and operational control. - Securely share messages, files, and links across from your preferred mobile devices. - Start 1:1 and group voice calls with a single click without leaving Mattermost. - Keep critical workflows moving forward with Playbook. - Get the message out without having to manage every endpoint with Enterprise Mobility Management (AppConfig) support. - Private mobility with ID-only push notifications to keep sensitive data protected while keeping stakeholders informed. To use this app, you need a URL for a Mattermost server. ------- Deploy your own server: https://docs.mattermost.com/guides/deployment.html Terms of Service: https://mattermost.com/terms-of-service/ Contribute to the project: https://github.com/mattermost/mattermost-mobile
GAM
A secure platform for communication and collaboration. Organize team projects, track news, and store files in a unified workspace. Features include channels for focused discussions, tagging for mentions, and a task management board.
- Team channels for organized discussions
- Tagging for direct mentions
- Advanced search and filtering
- Task management board
- Reliable file storage
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A messenger for communication and work. Connect with friends and colleagues, create projects with teams, track news, and store files in one secure place. In the app: - Channels. Create shared connections for topics and projects. Divide discussions into subchannels for individual groups to stay on task. - Tags. Tag people with @ to keep them relevant. The mentions tab shows where you've tagged them. - Search. Read messages and files in private chats and channels. Filter by sender, chat, date, or file type. - Tasks. Manage a task board: assign tasks, times, and statuses—everyone stays on top of progress. - Reliable file storage. Send, receive, and save documents and photos directly in chats—they won't get lost. Designed to keep your daily communication and collaboration organized. This app does not provide public access or in-app purchases.
Screenshots
Verdict
The clearest difference is review sentiment: GAM at 75% against Mattermost's 38%. GAM also leads on rating (5.0 vs 4.8) and iOS requirement (15.1 vs 18.0). Mattermost's advantage is update cadence (every 9 days vs every 4 months) and ratings volume (5.7K vs 1). On price, ads, in-app purchases and monetization model there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
GAM holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Mattermost has 5.7K ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 38% of Mattermost's written reviews are positive against 75% of GAM's.
Mattermost ships an update every 9 days, GAM every 4 months. The most recent releases landed on October 29, 2026 and October 24, 2026 respectively.
| Parameter | Mattermost | GAM |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (5.7K ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 37.7% of reviews | 75.0% of reviews — better |
| Number of ratings | 5.7K — better | 1 |
| Update frequency | Every 9 days — better | Every 4 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 18.0 | 15.1 — better |
| Further details — not scored | ||
| Size | 94 MB | 78 MB |
| Age rating | 4+ | 17+ |
| Developer | Mattermost, Inc. | Золотое яблоко |
Customer experience
Mattermost
GAM
Bugs and requests
Mattermost
Reported bugs
5 issues- Crashes on startup
- Unread message indicators not working
- Keyboard issues on iPad/desktop
- Compatibility problems with iOS 17+
- Randomly logs users out
Requested features
5 requests- Add voice messaging capability
- Improve multi-server support
- Integrate end-to-end encryption
- Introduce iPad-optimized layout
- Provide more customization options
GAM
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Mattermost
No in-app purchases
GAM
No in-app purchases
