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Referrals & Growth
Articles and guides about referrals & growth, from the team building affiliate marketing for mobile apps.
Michael ButlerBest Referral Program Software for Mobile Apps (2026)
Michael ButlerHow to Build a Mobile App Referral Program That Works
Why most app referral programs fail and how turning referrals into a real affiliate program with cash commissions drives superior results.
Michael ButlerHow Duolingo, Calm, and Strava Built Referral Loops That Scale
Case studies of how successful apps built referral and viral loops. Lessons from Duolingo, Calm, and Strava that any app can apply.
Michael ButlerIn-App Referrals: Turn Your Users Into Affiliates
How mobile apps can turn their own users into a referral channel with a drop-in refer-a-friend screen and automatic rewards.
Michael ButlerWhat Is a Viral Coefficient (K-Factor) and How to Calculate It for Your App
Understand viral coefficient (K-factor) for mobile apps. How to calculate it, what good looks like, and how affiliate programs influence virality.
Michael ButlerWhy Users Trust Friend Recommendations (And How Referrals Use It)
The psychology behind why personal recommendations drive app installs. How referral and affiliate programs tap into trust-based decision making.