“Vanity metrics will let any startup paint a rosy picture, but they won't lead to better decisions.”
— Eric Ries, The Lean Startup, p. 114
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Insight
Total signups, total downloads, page-views — all impress investors and lie to you.
Try this
Pick one cohort metric (e.g., D7 retention, or paying-conversion-by-week-1). Track only that for 30 days.
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