Monthly Active Users (MAU) Calculator
Compute MAU, DAU/MAU stickiness, activation rate, and month-over-month growth for your SaaS or consumer product.
Why MAU Is Both Useful and Misleading
Monthly Active Users (MAU) is the workhorse metric of consumer and SaaS analytics — but it hides important variation. A product with 100K MAU where each user logs in once per month is fundamentally different from a product with 100K MAU where each logs in daily. Always pair MAU with DAU/MAU stickiness ratio and average sessions per user.
The standard MAU definition: a unique user who took at least one action in your product within a 30-day window. Define 'action' clearly — opening the app vs taking a meaningful action (sending a message, creating a record, viewing 3+ screens). Loose definitions inflate MAU and tank engagement metrics. Source: Andrew Chen growth research, Sequoia Capital metrics handbook. Last updated: May 2026.
DAU/MAU Stickiness Benchmarks
| Product Category | Healthy Stickiness |
|---|---|
| Daily-use communication (Slack, WhatsApp) | 50-70% |
| Social networks | 40-65% |
| Consumer productivity (Notion, Trello) | 20-35% |
| B2B SaaS (typical) | 10-20% |
| Vertical SaaS (less frequent use) | 5-15% |
| Periodic-use tools (tax, accounting) | 3-8% |
Compare to similar products — a 10% stickiness is great for a tax calculator and terrible for a chat app.
Activation Rate — The Leading Indicator
Activation rate = % of new signups who reach the 'aha' moment (took a core action in a defined timeframe). Examples: WhatsApp sent first message in 24 hours, Facebook added 7 friends in 10 days, Slack sent 2,000 messages in workspace. Activation predicts long-term retention 10× better than signups. Best practice: define your activation event narrowly (specific action), measure conversion from signup, optimize ruthlessly. Source: Reforge, Lenny Rachitsky activation framework.
How to Grow MAU Without Inflating It
(1) Improve activation — convert more signups into actual users. (2) Improve retention — keep more existing users active each month. (3) Resurrect dormant users — re-engage users who lapsed within 60 days. (4) Drive new signups via product-led growth, paid acquisition, or content. Healthy MAU growth comes from #1-3 (improving funnel efficiency); pure paid acquisition growth without retention improvements is a leaky bucket — eventually plateaus and rolls over.