AARRR Pirate Metrics: Free Template & Complete Guide
Master the growth framework used by Dropbox, Spotify, and Airbnb to scale from 0 to millions of users.
What is AARRR (Pirate Metrics)?
AARRR (pronounced “pirate metrics” — ARRR!) is a growth framework created by Dave McClure that breaks down the customer lifecycle into 5 key stages. It helps PMs identify where users drop off and what levers to pull to accelerate growth.
Think of it as a funnel that shows how users move from discovering your product to becoming advocates who bring in new users.
The 5 Stages of AARRR
Real metrics + real examples from teams that scaled with this framework.
Stage 1
Acquisition
“How do users discover your product?”
Key Metrics
- Traffic sources (organic, paid, referral, direct)
- Cost per acquisition (CPA)
- Conversion rate from visitor to user
- Channel effectiveness
Real Example: Dropbox
Dropbox acquired users through a viral referral program offering extra storage space. They tracked acquisition via unique referral links and measured CPA of $0 for referred users vs $388 for paid ads.
Stage 2
Activation
“Do users have a great first experience?”
Key Metrics
- Time to value (TTV)
- Onboarding completion rate
- Feature adoption rate
- Aha moment achievement
Real Example: Slack
Slack defines activation as "2,000 messages sent by a team." They found teams that hit this threshold had 93% retention. Their onboarding focuses on getting teams to this magic number ASAP.
Stage 3
Retention
“Do users come back and use your product?”
Key Metrics
- Day 1, 7, 30 retention rates
- Churn rate
- DAU/MAU ratio (stickiness)
- Cohort retention curves
Real Example: Netflix
Netflix measures retention by tracking what % of users watch content each week. They found if a user watches at least 1 show in their first month, retention jumps from 60% to 85%. Their recommendation engine optimizes for this.
Stage 4
Revenue
“Can you monetize user behavior?”
Key Metrics
- Average revenue per user (ARPU)
- Customer lifetime value (LTV)
- Conversion to paid rate
- LTV:CAC ratio
Real Example: Spotify
Spotify measures ARPU for free vs premium users ($0 vs $10/mo). They found users who create 3+ playlists convert to premium at 3x the rate. Their free tier focuses on driving playlist creation to boost revenue.
Stage 5
Referral
“Do users tell others about your product?”
Key Metrics
- Viral coefficient (K-factor)
- Net Promoter Score (NPS)
- Referral conversion rate
- Share rate
Real Example: Airbnb
Airbnb's referral program gives $25 credit to both referrer and referee. They track viral coefficient (invites sent × conversion rate). With K-factor of 1.2, each new user brings 1.2 more users, creating exponential growth.
Free AARRR Template
Track all 5 AARRR stages with our free template.
Download Free AARRR TemplateTemplate Includes
- Pre-built metric calculators for each stage
- Automated charts and visualizations
- Benchmark data from 500+ companies
- Weekly/monthly tracking tabs
- Cohort analysis template
- Actionable insights dashboard
How to Use AARRR Metrics
- 1
Step 1: Define Your Funnel
For each AARRR stage, define what "success" looks like for your product. E.g., Activation = user completes profile + sends first message.
- 2
Step 2: Instrument Tracking
Set up analytics to measure each stage. Use tools like Mixpanel, Amplitude, or Google Analytics to track conversion rates between stages.
- 3
Step 3: Find Your Biggest Leak
Calculate conversion rates between each stage. Your biggest drop-off is your biggest opportunity. Focus 80% of effort there.
- 4
Step 4: Run Experiments
Run A/B tests to improve your weakest stage. Track lift in conversion rate. Repeat until you hit diminishing returns, then move to next stage.
- 5
Step 5: Optimize in Order
Optimize AARRR in this order: Retention → Activation → Acquisition → Revenue → Referral. Fix retention first (no point acquiring users who churn).
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