Pillar · Referral

Referral. Users bring users.

Virality, advocacy, referral mechanics — when users bring users without further spend.

Referral · Brief

Users bring users. Virality, advocacy, referral mechanics — when users bring users without further spend.

Studies

Studies in this pillar. 12 indexed.

01Dropbox's Double-Sided Referral Program Dropbox.Referral · Viral+60%permanent lift in signupsDropbox02PayPal's Paid Referral Blitz PayPal.Referral · Network Effects5Musers in early growthPayPal03Tesla's Tiered Referral Program Tesla.Referral · Zero Ad Spend$0traditional ad spendTesla04Uber's Ride Credit Referral Engine Uber.Referral · Credits100M+riders (by 2018)Uber05Robinhood's Free Stock Referral Program Robinhood.Referral · Gamification23M+funded accounts (2023)Robinhood06Airbnb's Travel Credit Referral 2.0 Airbnb.Referral · Credits300%increase in referral bookingsAirbnb07Morning Brew's Merch-Tiered Referral Program Morning Brew.Referral · Newsletter4M+subscribersMorning Brew08Harry's Pre-Launch Waitlist Referral Campaign Harry's.Pre-Launch · Waitlist100Kemails in one weekHarry's09Beehiiv's Built-In Referral System for Newsletters Beehiiv.Referral · Newsletter750K+newsletters on platformBeehiiv10Webflow's Designer Community as Growth Engine Webflow.Community · Designer3.5M+usersWebflow11Wise's Word-of-Mouth Flywheel: How Being 8–10× Cheaper Turned Customers into a Growth Engine Wise.word-of-mouth · referral70% of new users acquired via word-of-mouthShare of new Wise customers who first heard about the product from a friend (Nilan Peiris, Lenny's Podcast)Wise12tbh's School-by-School Takeover: How Nikita Bier Engineered Viral Critical Mass in 9 Weeks tbh.virality · word-of-mouth360,000 installs/day at peakDaily install rate at peak growth (Nikita Bier, Lenny's Podcast)tbh
Writing

Writing in this pillar. 3 indexed.

The studio register

One operator-grade memo a month: benchmarks, growth studies, and what we learned building. No news recap.

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