Metric
User quick ratio
New plus resurrected users divided by churned users, over a rolling 28 days. Above 1 the user base grows; below 1 for two to three months marks a stalled or declining product.
Plain label: growth in versus churn outAlso known as: quick ratio, growth accounting
Above 1 the base grows. For consumer apps, Hsu treated ratios between 1 and 1.5 as middling and between 1.5 and 2 as strong (benchmark confidence A; expert opinion, about 2015). Very fast acquisition can mask churn, so always read the components. Growth that is repeatable (above about 1.5) plus triangulated fit marks Scale; a ratio drifting toward 1 on a large base marks Mature.
Sources
Diligence at Social Capital, Part 1: Accounting for User Growth · Social Capital (Jonathan Hsu), 2015
Benchmark confidence A. A primary source for the benchmark.
Book content is paraphrased, never quoted at length. Last verified October 24, 2026.
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