MostlyMatter vs MattCha for Mattermost
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
MostlyMatter
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MostlyMatter ist die Team-Kommunikations-App von SIRPLUS. Bleibe mit deinem Team in Verbindung – überall und jederzeit. Funktionen: • Nachrichten in Echtzeit mit Kanälen und Direktnachrichten • Sprachnachrichten senden und empfangen • Dateien, Bilder und Dokumente teilen • Push-Benachrichtigungen für neue Nachrichten • Threads für übersichtliche Diskussionen • Suchfunktion über alle Nachrichten und Dateien • Dunkelmodus MostlyMatter basiert auf Mattermost (Open Source) und wird von SIRPLUS betrieben. Deine Daten bleiben auf unserem eigenen Server – sicher und DSGVO-konform.
MattCha for Mattermost
A fast, native client for team communication, offering voice messaging, SSO, and AI-powered reply suggestions. It provides a seamless experience across Apple devices with features like quick switching and saved messages.
- Voice messages with pause and attach functionality
- Support for multiple Mattermost servers and teams
- Single Sign-On (SSO) integration
- AI-powered reply suggestions
- Quick channel and message switching
- Saved messages for easy access
- Syntax-highlighted code blocks
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MattCha is a fast, native Mattermost client for iPhone, iPad and Mac. Reply with your voice, and keep up with your team's channels, threads and direct messages in an app that feels at home on every Apple device. WHY MATTCHA • Voice messages, built in: tap the mic, talk, send. Pause when you need to, or attach the recording to a message. Your music keeps playing, and a recording in progress is kept if you leave the conversation. • All your teams and servers: add several Mattermost servers and switch between them and their teams from the header, or the side rail on iPad. Unread and mention counts for the others update live. • Sign in with SSO: if your company signs in to Mattermost with GitLab, Google, Microsoft 365, SAML or OpenID Connect, MattCha signs in the same way. • Built for AI agents: open any thread in the Reader as one clean article. Agent reasoning folds away so the answer comes first, and answers sent in several parts read as one. • Reply suggestions: on devices with Apple Intelligence, an empty composer suggests your next message, generated privately on your device. Turn it off any time in Settings. • Quick Switcher: jump to any channel, person or message with one tap. • Saved Messages: keep important messages one tap away in the sidebar. • Truly native: Liquid Glass design, and sidebar, channel and thread side by side on iPad. • Ready for iPhone Duo: optimized for both screens, folded or open, with controls in the new side bar. • Code that reads like code: syntax-highlighted code blocks, tables, checklists and Markdown. • Find anything: search every channel, with highlighted results. • Fast and light: smooth typing and scrolling, and low battery use while connected. EVERYTHING YOU NEED • Sign in with SSO, username and password (including MFA) or a personal access token, on any server address, including a custom port • Public and private channels, direct messages and group messages • Send, edit, delete and reply to messages, and add emoji reactions • Attachments preview inline: images, PDFs, text, code and audio. Channel Settings lists every file shared in a channel • Share and save attachments • Unread badges, favorites, Mark All as Read with Undo, and pull to refresh • Shortcuts actions to set, check and clear your status, plus Home Screen and Lock Screen widgets, including Quick Compose • Light and dark mode, adjustable text size, and VoiceOver support NOTIFICATIONS New messages and unread badges update live while MattCha is open. Push notifications while the app is closed need extra setup on your Mattermost server and are not available on most servers yet. YOUR SERVER, YOUR DATA MattCha connects directly to the Mattermost server you choose and works with Mattermost Server 10.11 (ESR) and newer. No tracking, no ads, and no account with us. MattCha does not provide a server, create accounts or host workspace data. Your account, messages, files, permissions and retention rules stay under the control of your server. MattCha is not affiliated with, endorsed by, or sponsored by Mattermost, Inc. Mattermost is a trademark of Mattermost, Inc.
Screenshots
Verdict
The clearest difference is update cadence: MattCha for Mattermost at every 5 days against MostlyMatter's every 2 months. MostlyMatter's advantage is iOS requirement (16.0 vs 26.0). On price, ads, in-app purchases and device support 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.
MostlyMatter ships an update every 2 months, MattCha for Mattermost every 5 days. The most recent releases landed on October 31, 2026 and November 10, 2026 respectively.
| Parameter | MostlyMatter | MattCha for Mattermost |
|---|---|---|
| Price | Free | Free |
| Rating | — | 2.0 (1 ratings) — better |
| Positive reviews | — | 0.0% of reviews |
| Number of ratings | — | 1 — better |
| Update frequency | Every 2 months | Every 5 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPad | iPhone, iPad, Mac — better |
| Requires iOS | 16.0 — better | 26.0 |
| Further details — not scored | ||
| Size | 87 MB | 15 MB |
| Age rating | 4+ | 12+ |
| Developer | sirplus.de | Johannes Leimbach |
In-app purchases
MostlyMatter
No in-app purchases
MattCha for Mattermost
No in-app purchases





