A good cancellation save flow rescues 15-25% of churning customers. A bad one (or none at all) saves 0-5%. The difference is which offer you show when a customer clicks cancel, and how it matches their actual reason for leaving.
Here is an honest comparison of the three leading save flow platforms in 2026.
The TL;DR
- Churnkey ($100-1000+/mo) - Best for SaaS at $250K+ MRR that wants the full retention stack (save flows + dunning + analytics)
- ProsperStack (from $79/mo) - Best for SaaS at $50K-$500K MRR that wants just a clean save flow builder
- Raaft (free tier + $79+/mo) - Best for pre-revenue or under $50K MRR that needs the MVP
Churnkey
What it does: Full retention platform - dynamic save flows, AI dunning, personalized recovery emails, and analytics on what is actually recovering. The bundling is the value.
Pricing: Roughly $100-1000+/month depending on subscription volume. Custom pricing above $5M MRR.
What is good:
- Dynamic reason-matched offer routing built in
- A/B testing framework included
- Bundled with dunning and payment recovery (see AI dunning guide)
- Strong analytics on which offers save which cancellation reasons
- Multi-step flow builder with pause, downgrade, and offer branches
What is not good:
- The pricing is meaningful (justifiable above $250K MRR, questionable below)
- Implementation requires connecting billing, ESP, and product
- Some features overlap with what your ESP already does
Pick this if: You are at $250K-$5M MRR and want a single platform for save flows + dunning + retention analytics. The bundling replaces 3 separate tools.
ProsperStack
What it does: Clean save flow builder with visual editor, reason-based routing, and standard offer types (discount, pause, downgrade, extension).
Pricing: From $79/month, scales with cancellation volume.
What is good:
- Fast to set up (typically 30-60 minutes)
- Clean visual flow builder that non-engineers can use
- Solid reason capture and analytics on which reasons are cancelling
- Good survey collection during the cancel process
- Fair pricing for the value
What is not good:
- Not bundled with dunning (you need Stripe Smart Retries or a separate tool)
- Less sophisticated A/B testing than Churnkey
- Fewer integrations than the bigger platforms
Pick this if: You want a solid save flow at a reasonable price and already have dunning covered elsewhere. Great fit for SaaS between $50K-$500K MRR.
Raaft
What it does: Simpler save flow builder with the essential offer types. Free tier for smaller companies.
Pricing: Free tier available. Paid plans from $79/month.
What is good:
- Free tier that covers up to a specific cancellation volume
- Fast setup, minimal engineering
- Good for validating whether a save flow will work for your business before paying
- Clean, focused feature set (no bloat)
What is not good:
- Fewer advanced features than Churnkey or ProsperStack
- Less analytics depth
- Not designed for multi-brand or enterprise complexity
Pick this if: You are pre-revenue or under $50K MRR and want to prove save flows work before investing more.
The decision framework
| Situation | Pick |
|---|---|
| Under $50K MRR | Raaft (free tier). Prove save flows before paying. |
| $50K-$250K MRR, no dunning | ProsperStack + Stripe Smart Retries |
| $50K-$250K MRR, dunning covered | ProsperStack (best value) |
| $250K-$5M MRR | Churnkey (full stack bundling wins) |
| $5M+ MRR, complex billing | Churnkey + custom evaluation of enterprise features |
The offers that actually save customers
The tool matters less than the offer strategy. See how to write a cancellation save offer for the reason-matched playbook that works across all three platforms.
Static "here is 20% off, please stay" saves 5-10%. Reason-matched offers save 15-25%. The difference is bigger than the difference between any of these tools.
Score your setup
Take the 60-second Churn Health Check. It scores your save flow maturity and tells you whether a save flow is your biggest retention gap right now.