Slack
Free

Slack

All your team communication in one place

★★★★☆4.2·Business·10M+ downloads, no survivors
📊 The Damage Report

Quick Info

8.6h
Hrs Wasted / Day
4.2
Avg Rating
220K
Sworn Statements
420 MB
Size
Everyone
Age Rating
📸 Exhibit A

Screenshots

“The interface that ate your evening, lovingly photographed.”

🧠 Addiction Profile

Rating Comparison

“How hard it grabbed, broken down by how hard they fell.”

5
31%
4
61%
3
7%
2
0%
1
0%
Official scores, for the record
App Store
4.1
42,354 reviews
Google Play
4.6
177,700 reviews
🎭 What It Says vs What It Does

The Pitch & The Reality

😇 The Pitch

All your team communication in one place

😈 The Reality

Productivity sold separately.

⚠️ AskApp Health Advisory

Requires: thumbs, free time you don't have, and a flexible definition of 'productive.'

💻 Developer's Note

The free version is free the way a free puppy is free.

⚖️ The Verdict · Filed by a Bot

AI Review Summary

Based on analysis of 220054 reviews

Users consistently praise Slack's channel-based organization for eliminating email chaos, with many teams reporting they've "practically stopped using internal emails" in favor of structured project channels. The search functionality and extensive third-party integrations—particularly with Google Workspace and Dropbox—receive high marks for streamlining workflows. However, mobile reliability remains a critical pain point, with widespread frustration over notification failures where pushes arrive hours late or not at all, messages syncing inconsistently between devices, and drafts disappearing when users switch apps or lock their phones. Recent UI updates have also drawn criticism for removing convenient shortcuts like recent channels from the search bar, while the authentication process requiring workspace URLs and "magic links" continues to confuse users.

Pros (the bait)
  • Intuitive channel-based organization replaces chaotic email threads
  • Powerful search finds files and messages from months ago instantly
  • Extensive third-party app integrations with Google Drive and Calendar
  • Minimal battery drain compared to competitor platforms
  • Cross-platform desktop and mobile interface consistency
  • Built-in video huddles and screen sharing for remote work
  • Professional threading keeps project discussions structured
Cons (the bill)
  • Unreliable push notifications often delayed by hours or missing
  • Drafts disappear when switching apps or locking phone screen
  • Confusing login requiring workspace URLs and broken magic links
  • Recent UI updates removed quick access to recent channels
  • Sync failures between mobile and desktop devices
⚖️ Verdict

Slack remains the industry standard for organized business communication and works beautifully when stable, making it ideal for teams prioritizing structured project discussions over casual chat. However, professionals who depend on dependable mobile notifications or frequently compose messages on-the-go should approach with caution due to persistent sync bugs and draft loss issues that continue to plague the mobile experience.

💬 Survivor Testimonials

What People Say

😍 What Users Love
😵‍💫
DeletedItTwice
★★★★★

Channel Organization: The channel system is a game changer. Work discussions feel structured and clean, and we've practically stopped using internal emails. Everything is organized into channels so I always know exactly where to find project updates.

👀
RecoveringUser_88
★★★★★

Search Functionality: Search has gotten pretty good and I can find a file or message from months ago in seconds. It's powerful and makes finding old information incredibly fast.

😬
BatteryAt2Percent
★★★★★

Third-party Integrations: Allows integration with many third-party apps such as Google's drive, calendar and much more. Keeps teams organized and connected with external tools.

😤 Common Complaints
🤳
BatteryAt2Percent
★★☆☆☆

Notification Failures: Push notifications are essentially worthless. Most often they're never delivered, or arrive hours after the post. I have every setting enabled but never get any alerts.

🫥
OneMoreLevel_Dave
★★☆☆☆

Login & Authentication: The strange login method requiring workspace URLs and magic links is troublesome. The links don't sign me in automatically and I end up in endless loops trying to connect accounts.

🦝
Anonymous_Refresher
★★☆☆☆

Draft & Message Loss: When I leave the app and come back, my posts disappear or automatically move to Drafts. If I type a long message then lock my phone, everything is erased and I have to rewrite it.

📖 The Fine Print

About This App

Slack is a business communication platform that transforms workplace collaboration by replacing cluttered email threads with organized, dedicated channels for projects, teams, and topics. Designed for companies ranging from startups to enterprises, it serves as a centralized hub where colleagues can message in real-time, share files up to 1GB, launch instant video huddles, and integrate with over 2,600 third-party applications. Unlike consumer messaging apps, Slack structures conversations around searchable topics, allowing users to collaborate with external partners, automate workflows with AI agents, and maintain institutional knowledge archives. The platform supports asynchronous work through voice and video clips, while maintaining the immediacy of live chat for urgent discussions.

❓ Questions You'll Ignore

Frequently Asked Questions