# referral-program-building > Build referral programs for SaaS/digital products. Covers reward structures (two-sided, tiered, multi-step), platform selection (Rewardful, ReferralCandy, Viral Loops, FirstPromoter), technical implementation (tracking, attribution, API patterns), fraud prevention, email templates, and KPI metrics. Use for designing viral growth loops, implementing refer-a-friend features, or optimizing existing referral systems. - Author: HTBK - Repository: huynhtrungbk/antigravity-htkit - Version: 20260207221040 - Stars: 0 - Forks: 0 - Last Updated: 2026-02-07 - Source: https://github.com/huynhtrungbk/antigravity-htkit - Web: https://mule.run/skillshub/@@huynhtrungbk/antigravity-htkit~referral-program-building:20260207221040 --- --- name: referral-program-building description: Build referral programs for SaaS/digital products. Covers reward structures (two-sided, tiered, multi-step), platform selection (Rewardful, ReferralCandy, Viral Loops, FirstPromoter), technical implementation (tracking, attribution, API patterns), fraud prevention, email templates, and KPI metrics. Use for designing viral growth loops, implementing refer-a-friend features, or optimizing existing referral systems. version: 1.0.0 --- # Referral Program Building Build viral referral programs that drive 2-3x higher conversion rates with 37% better retention. ## Quick Start 1. **Define Program Type** - Choose reward structure matching business model 2. **Select Platform** - Pick tool based on scale and integration needs 3. **Implement Tracking** - Set up attribution, fraud prevention, analytics 4. **Launch & Optimize** - Soft launch, measure KPIs, iterate ## Core Principles - **Two-Sided Rewards:** Both referrer AND referee get incentives (68% higher participation) - **Product Alignment:** Use product as reward when possible (Dropbox model) - **Integration:** Embed in user workflow, not separate feature - **Simplicity:** Explain in 2-3 bullet points or it's too complex ## References ### Strategy & Design - [Reward Structures](references/reward-structures.md) - Incentive types, tiered rewards, real-world examples - [Platform Selection](references/platform-selection.md) - Rewardful vs ReferralCandy vs Viral Loops comparison ### Implementation - [Technical Guide](references/technical-implementation.md) - Database schema, API patterns, attribution - [Fraud Prevention](references/fraud-prevention.md) - Detection mechanisms, validation rules ### Operations - [Email Templates](references/email-templates.md) - Program intro, reminders, reward fulfillment - [Metrics & KPIs](references/metrics-tracking.md) - Participation rate, ROI, CLV tracking ## Platform Quick Reference | Platform | Best For | Price | Setup | |----------|----------|-------|-------| | Rewardful | SaaS subscriptions | $49/mo | 1 hour | | ReferralCandy | Ecommerce | $49/mo | 1-click | | Viral Loops | Custom campaigns | Custom | Visual builder | | FirstPromoter | Recurring commissions | Custom | Dashboard | | Voucherify | Enterprise API-first | Custom | API integration | ## Key Metrics - **Participation Rate:** Target 5-9% - **Referral Rate:** Target 5-10% (avg 2.3%) - **CAC via Referral:** Should be 30-50% lower than other channels - **Referred CLV:** 16-25% higher than non-referred - **Program ROI:** Successful programs see 3:1 to 5:1 ## Case Study Insights **Dropbox (3900% Growth):** - Product-aligned reward (500MB storage) - Integrated into onboarding step 6 - Both parties benefit equally **PayPal (100M Users):** - $20+$20 aggressive cash incentives - Aligned with payment product - 7-10% daily growth rate **Airbnb (900% YoY):** - Altruistic messaging outperformed selfish - Mobile-first optimization - Data-driven A/B testing everything ## Report Output **Activate:** `assets-organizing` skill for report file paths Referral reports go to `assets/reports/performance/{date}-referral-program.md`