Slack vs Zoom
Head-to-head Churn Health Score from public retention signals. Higher score = healthier.
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Verdict
Zoom has a higher Churn Health Score (56) than Slack (48), a difference of 8 points. Zoom has a modest public-signal edge, but both are within the same overall tier.
Public-signal estimate from G2, Hacker News, Reddit, layoffs.fyi, and pricing changes. Not a churn rate. Methodology.
Slack signals
- Aug 2025 killed $10 AI add-on, forced migration to Business+ at $15/user
- Sept 2025 Hack Club 40x pricing incident (reversed after backlash)
- Business+ price $12.50 to $15/user, new Enterprise+ tier introduced
- Forced Agentforce bundling surfaces AI in workflows users didn't opt into
Zoom signals
- April 2025 'Elusive Comet' remote-control feature exploitation
- CVE-2026-22844 Zoom Node MMR RCE (CVSS 9.9)
- Zoom.us domain outage 2025 via GoDaddy Registry error
- Microsoft Teams bundling competition at enterprise level
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Grade YoursSlack scored 48. Where would you rank?
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