What are Slack's main features?

Slack's key features include Channel-based Communication, Direct Messaging, File Sharing and Integration.

Is Slack available on iOS and Android?

Yes, Slack is available on iOS (App Store) and Google Play (Android).

Slack

Slack Technologies

Slack

Name: Slack
Availability: InStock
Rating: 4.6558948 (228482 reviews)
Author: Slack Technologies, Inc.

v26.03.40

Slack Technologies

228.5K ratings

App Store →Play Store →

Business #18

Report updated Apr 1, 2026

Slack

v26.03.40

Slack Technologies

228.5K ratings

Professional teams and organizations looking to streamline internal communication and replace fragmented email threads.

App Store →Play Store →

Business #18

What Is Slack?

Launched Mar 20, 2013
Updated Mar 2026

Slack is a premier team collaboration platform designed to centralize communication, replacing fragmented email threads with organized, channel-based workspaces. It serves professional teams and organizations of all sizes, positioning itself as the digital headquarters for modern work. Currently holding the #18 spot in the Business category (US), Slack maintains a strong market presence. Its primary differentiator is its product-led growth strategy, which leverages a robust freemium model to drive enterprise-wide adoption.

What does it look like?

What are the key features?

Channel-based CommunicationStandard

Organizes team conversations into dedicated spaces for projects, topics, or teams.

Direct MessagingStandard

Private one-on-one or group messaging for quick, focused communication.

File Sharing and IntegrationStandard

Allows users to share files and integrate with third-party productivity tools.

What do users think? iIndependent intel reports to help builders create better apps or enhance existing ones. Still in beta, accuracy and relevancy get better every day. For informational purposes only.

Gathering public signals...

Sentiment analysis will be available once enough user reviews are collected.

How is it ranked?

Chart	Rank	Change
Free	#18

No ranking data for this selection.

What are the pros and cons?

Pros

Strong brand recognition
Extensive third-party integration ecosystem
Intuitive UI/UX

Cons

Limited free tier history
High cost-per-user at scale
Potential for notification fatigue

What is the market outlook?

Growth Opportunities

AI-driven summarization features
Expansion into asynchronous work tools
Niche industry compliance modules

Market Threats

Bundling strategies by Microsoft and Google
Rise of all-in-one project management platforms
Disruptive free-forever pricing models

Who competes with Slack?

The Nemesis

Microsoft Teams

★4.7 (8533K)

Microsoft Corporation

Frustrated

Direct enterprise-grade competitor offering identical channel-based communication and deep integration with productivity suites.

Contenders

Discord - Talk, Play, Hang Out

★4.3 (6726K)

Discord Inc.

Mixed

Offers a highly similar channel-based structure and real-time communication, increasingly adopted by professional teams for its speed and flexibility.

Mattermost

★4.8 (5K)

Mattermost, Inc.

Self-hosted, secure communication platform specifically targeting the same professional team collaboration use case.

Same Space

Google Chat

★4.4 (340K)

Google

Mixed

Enterprise communication tool integrated into the Google Workspace ecosystem, competing for the same business user base.

ClickUp: Tasks, Chat, Docs, AI

★4.0 (21K)

Mango Technologies, Inc.

Frustrated

While primarily project management, its robust chat and collaboration features pull users away from dedicated messaging apps.

monday.com - Work Platform

★4.8 (46K)

monday.com Ltd.

Mixed

Project management platform that centralizes team communication, reducing the need for a separate chat app.

New Kids on the Block

Threads

★4.1 (2281K)

Instagram, Inc.

Frustrated

Focuses on long-form, organized team discussions that solve the 'noise' problem inherent in Slack's real-time channels.

Pumble

★4.7 (1K)

CAKE.com

A rising challenger offering a free-forever model with unlimited history, directly attacking Slack's monetization strategy.

What are the key takeaways?

Slack is a divisive business app that is free with in-app purchases. With a 4.5/5 rating from 228.5K reviews, it receives mixed feedback from users.

Best for: Professional teams and organizations looking to streamline internal communication and replace fragmented email threads.

How much does it cost?

Model: freemium

Tiers:

Free tier with limited message history and integrationsPaid subscription tiers for unlimited history and advanced features

Uses a product-led growth strategy by offering a robust free tier to drive enterprise-wide adoption before converting to paid subscriptions.

iOS Version

26.03.40

Android Version

26.03.40.0

Release Date

Mar 20, 2013

iOS Price

Free

Android Price

Free

Developer

Slack Technologies, Inc.