AARRR pirate metrics

<div class="stage"><div class="label">AARRR · ILLUSTRATIVE FLOW</div><div class="funnel"><div class="row"><b>ACQUIRE</b><i></i><em>100</em></div><div class="row"><b>ACTIVATE</b><i></i><em>65</em></div><div class="row"><b>RETAIN</b><i></i><em>40</em></div><div class="row"><b>REFER</b><i></i><em>18</em></div><div class="row"><b>REVENUE</b><i></i><em>12</em></div></div></div>

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