The five stages of the customer lifecycle — Acquisition, Activation, Retention, Referral, Revenue — mapped as a funnel so you can see exactly where users are gained and lost.
▸ Try the interactive toolThe AARRR framework — nicknamed Pirate Metrics for the sound of the acronym — was created by investor Dave McClure to map the five stages of the customer lifecycle: Acquisition, Activation, Retention, Referral, and Revenue. Each stage asks one question, tracked by its own metrics, and together they form a complete picture of where users are gained and lost.
AARRR's power is that it turns “growth” from a vague aspiration into a diagnosable funnel. When growth stalls, the framework tells you which stage is leaking — and a leak at Activation needs a completely different fix than a leak at Retention. Most teams over-invest in Acquisition (the top, most visible stage) while the real problem sits lower in the funnel.
Acquisition — how do users find you? · Activation — do they have a great first experience? · Retention — do they come back? · Referral — do they tell others? · Revenue — do they pay?
“We need to grow” is not an actionable statement. AARRR breaks growth into five stages so you can find the one that's actually broken.
| The shortcut | What it costs | What it gives you instead |
|---|---|---|
| Treating growth as one number | “Growth is down” gives no clue what to fix. | Five stages localise the leak to a specific point in the lifecycle. |
| Over-investing in Acquisition | Pouring money into the top while users leak out the bottom. | The funnel shows that fixing Activation or Retention often beats buying more traffic. |
| Vanity at the top | Big signup numbers hide a broken middle. | Stage-by-stage metrics expose where the impressive top number quietly evaporates. |
| No shared growth language | Marketing, product, and sales each optimise a different thing. | AARRR gives every team a shared map of where their work sits. |
For your product, pick the single clearest measure of each stage — e.g. signups (Acquisition), reaching first value (Activation), week-N return (Retention), invites sent (Referral), paying conversion (Revenue).
Make sure each stage is actually tracked. An un-instrumented stage is a blind spot where users vanish without a trace.
The conversion rate from each stage to the next is the diagnostic. A cliff between Acquisition and Activation means people sign up and never reach value.
Don't optimise the stage that's easiest or most visible — optimise the one losing the most users relative to benchmark. That's usually not the top.
Improve the leaking stage, watch the downstream effect, then move to the next-biggest leak. Growth is sequential plumbing, not a single heroic push.
A team frustrated by flat growth kept buying more ads — more Acquisition. Mapping AARRR showed Acquisition was healthy: plenty of signups. The cliff was at Activation — most new users never reached the product's first moment of value, so Retention had almost nothing to retain.
Every extra dollar of Acquisition was pouring users into a bucket with a hole at the Activation stage. Redirecting effort to the first-run experience lifted Activation, and Retention and Revenue rose behind it without a single extra ad.
The deliverable is the five-stage funnel with a metric and a conversion rate at each step — read as a leak detector.
| Stage | Asks | Example metric |
|---|---|---|
| Acquisition | How do they find us? | Signups, traffic by channel |
| Activation | Great first experience? | % reaching first value |
| Retention | Do they return? | Week-N / month-N active |
| Referral | Do they tell others? | Invites sent, viral coefficient |
| Revenue | Do they pay? | Conversion to paid, ARPU |
Growth isn't one lever — it's five, and only one is usually broken at a time. AARRR's value is telling you which, so you stop optimising the stage that's already fine.
The recurring lesson is that Retention, not Acquisition, is where durable growth lives. A leaky funnel with great Acquisition just loses users faster and more expensively. Fixing the funnel from the bottom up — Retention first, then Activation, then Acquisition — compounds, because every user you keep is one you don't have to re-acquire. AARRR makes that order visible instead of letting the loudest, most visible stage (Acquisition) absorb all the attention.
The top stage is the most visible and the most tempting — and often not the leak. Follow the drop-off, not the instinct.
An untracked stage is where users vanish invisibly. Measure all five.
Big signup numbers mean little if Activation and Retention leak. Read the whole funnel.
Stages interact — weak Activation starves Retention. Fix in funnel order, watching downstream effects.
The North Star usually sits at the Activation/Retention core of the funnel — AARRR is the funnel the North Star anchors.
Module 5 goes deep on each stage — funnel diagnostics, retention curves, cohort analysis.
The biggest leak points to where ICE/RICE experiments will have the most impact.
Revenue and Acquisition stages link to LTV/CAC — whether growth is actually profitable (Module 2 & 5).
Pick a product and name one metric for each of the five stages — even a rough guess. Then ask: which stage do you suspect leaks most?
Now consider where that product's team seems to spend its energy (usually visible Acquisition: ads, launches). Does it match the likely leak?
The gap between where a team spends and where the funnel actually leaks is the single most common growth mistake — and the easiest to spot once you've drawn the five stages.