Comparison

Mattermost vs AVI

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • 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
Features
Read full description

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

About

AVI

Features
Read full description

AVI-Chat is a communication app to ensure your pet’s arrival into the United States is seamless and stress free as possible! Our app allows you to stay in constant communication with your shipper and our customs processing team. Provide responsive communication with text-like chats, phone, and video calling capability directly from the app. Request, receive, and securely store sensitive documents and photos in a central location within the app. Keep track of the progress of each your pet’s pre-arrival to ensure that your pet is released from US Customs as quickly as possible. Stay aware of your pet’s import to the US at your fingertips with AVI-Chat from anywhere.

Screenshots

Mattermost4 screens
AVI4 screens

Verdict

The call

The clearest difference is update cadence: Mattermost at every 8 days against AVI's every 4 months. AVI's advantage is iOS requirement (14.0 vs 16.0). 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Mattermost ships an update every 8 days, AVI every 4 months. The most recent releases landed on September 25, 2026 and September 10, 2026 respectively.

Scorecard2 real differences · 8 level
Mattermost versus AVI: the parameters behind the verdict, then further details
ParameterMattermostAVI
PriceFreeFree
Rating4.8 (5.6K ratings) — better—
Positive reviews37.6% of reviews—
Number of ratings5.6K — better—
Update frequencyEvery 8 days — betterEvery 4 months
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.014.0 — better
Further details — not scored
Size93 MB149 MB
Age rating4+17+
DeveloperMattermost, Inc.KGSD Consulting LLC

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

AVI

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Mattermost

No in-app purchases

None

AVI

No in-app purchases

Questions

Is Mattermost free?
Mattermost is free to download, with no in-app purchases.
Is AVI free?
AVI is free to download, with no in-app purchases.
Do Mattermost or AVI have ads?
Neither Mattermost nor AVI shows ads.
Which is updated more often, Mattermost or AVI?
Mattermost ships an update every 8 days, and AVI every 4 months. Most recently, Mattermost was updated on September 25, 2026 and AVI on September 10, 2026.

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