Case Study: Thinx achieves 114% month-over-month referral revenue growth with Friendbuy

How Friendbuy’s Shopify Plus Integration Helped Thinx Grow Referral Revenue by 114% Month-Over-Month

Thinx, a growing brand with a strong base of enthusiastic customers, needed a better way to reward advocates as referrals scaled. Its original “give $10, get $10” program became cumbersome because repeat referrers ended up with multiple one-time coupon codes that were difficult to use, creating frustration for super users. Thinx partnered with Friendbuy, using Friendbuy’s Shopify Plus integration to improve its referral and loyalty experience.

Friendbuy implemented stackable account credits, automated referral code generation, reward validation, and a customizable referral dashboard for Thinx. The result was a simpler customer experience, fewer support inquiries, and more control for the Thinx team. Most importantly, Friendbuy helped drive 114% month-over-month referral revenue growth, kept customer acquisition costs under $1, and doubled the size of Thinx’s referral program.

Thinx

Brendan Hastings

SVP Engineering and Digital Product