Consumer Startup Metrics

The speaker says headline user growth matters, but founders should distinguish organic growth from paid acquisition. They suggest aiming for 15% monthly growth, describe 10% as acceptable, and warn that 5% or less is unlikely to produce breakout success. Virality brings in new users through sharing, while network effects make a product more useful as more people join; Facebook photo tagging, Wordle scores, and WhatsApp illustrate these ideas.

Paid referrals count as paid acquisition, and founders should watch for cannibalization and fraud. Track where users come from and the cost of acquiring users who become active, retained customers, not just sign-ups. At Monzo, one cheap advertising channel brought customers who withdrew cash in ways that made their lifetime value negative. Unit economics means customer revenue minus variable serving costs; the speaker says Monzo scaled negative economics before fixing them, at significant capital cost.

Consumer retention depends on how often a satisfied customer would naturally use the product, whether daily for Facebook or every several months for Airbnb. The speaker recommends identifying a “magic moment” associated with long-term retention and designing onboarding to help more users reach it. Facebook found that adding seven friends in the first 10 days predicted retention; Monzo saw better retention among customers who added friends to send and receive money.

Net Promoter Score subtracts the share of detractors, who rate a product from zero to six, from promoters, who rate it nine or ten. The speaker suggests a score above 50 as a baseline for a new consumer company and says to keep the survey timing and method consistent. At Grouper, changing how NPS was collected coincided with a 20-point drop; asking detractors why they are unhappy can help identify product fixes.