Dunning Tool Landscape — Churn Buster vs Stunning vs Gravy vs Butter

Churn Buster is the incumbent leader. Pricing starts at $100/mo for up to $50K MRR, scaling to $500+ for larger volumes. Strengths: deep Stripe integration, smart retry logic, customizable email sequences. Weaknesses: dated UI, no Lemon Squeezy or Paddle support, onboarding requires manual config, pricing feels expensive for early-stage startups.

Stunning positions as the budget alternative at $50/mo. Clean UI, good Stripe integration, but limited retry intelligence — mostly just sends emails on a schedule. No SMS, no AI personalization. Gravy takes a different approach: human-powered recovery teams that call customers. Higher recovery rates (reportedly 50-70%) but expensive — they take 15-25% of recovered revenue. Only viable above $500K ARR.

Butter focuses purely on retry optimization (no emails) — they intercept failed charges and retry with optimal timing/routing. $100/mo+. Gap in market: nobody offers AI-generated personalized recovery emails + smart retry + SMS + success-only pricing for the sub-$1M ARR segment.