Slack vs Stackby: Complete Comparison (2026)

Why choose Slack

• Higher Security score (9/10 vs 4/10)
• Higher Scalability score (9/10 vs 5/10)
• Better fit for enterprise (9/10 vs 4/10)
• Better fit for mid-market (8/10 vs 4/10)

Why choose Stackby

• Higher Cost score (8/10 vs 5/10)
• Higher Analytics score (6/10 vs 3/10)

Slack

Pros

• The app ecosystem is very large, and tools such as ClickUp, Notion, HubSpot and Clockify can post updates into channels.
• Slack Connect lets teams work in shared channels with up to 250 outside organizations on paid plans.
• Compliance coverage is broad, including ISO 27001, SOC 2 Type II, FedRAMP Moderate and HIPAA configurability.
• Lists add table and board layouts with assignees, due dates and subtasks, without leaving chat.
• Workflow Builder automates routine requests and approvals without code.

Cons

• There are no native Gantt charts, dependencies, time tracking or portfolio reporting, so Slack doesn't replace a dedicated PM tool.
• Frequent notifications and busy channels can interrupt focus, a common complaint in reviews.
• The free plan keeps only 90 days of message history and allows 10 apps.
• Advanced AI features require Business+ or above, and per-user costs add up as teams grow.
• Reviewers report that finding older messages through search can be difficult.

Stackby

Pros

• Read-only guests, form submissions and share links are free, and only editors are billed.
• API connector columns pull marketing data from Meta Ads, YouTube and Google Analytics into tables.
• Annual plans start at $4.20 per user per month, which a reviewer said undercuts Airtable for similar features.
• Integrates with Zapier, Make, Slack, Teams and AI models from OpenAI, Anthropic and Gemini.

Cons

• Reviewers report occasional slow loading and glitches.
• The mobile app supports fewer advanced features than the desktop version.
• No public SOC 2 or similar compliance certifications.
• The pricing page lists conflicting Enterprise limits.