Churnkey vs Stunning: which dunning tool fits your Stripe SaaS?
Two respected Stripe churn tools that solve different problems. Churnkey specializes in stopping cancellations; Stunning specializes in recovering failed payments. Here is an honest, use-case verdict on which one you actually need.
Two tools, two problems
Churnkey
Stops cancellations
Stunning
Recovers failed cards
Illustrative. Churnkey deflects cancels; Stunning recovers failed charges.
The short answer
Choose Churnkey if your churn is mostly voluntary (customers actively cancelling) and you want a cancel-flow builder with A/B-tested offers, and you have a developer for its SDK ($250/mo flat, billed yearly). Choose Stunning if your churn is mostly involuntary (failed payments) and you want a mature, multi-channel recovery tool (email, SMS, in-app) with no SDK and MRR-scaled pricing (about $120/mo at $40K MRR). Both are Stripe-native and neither takes a percentage of recovered revenue.
The honest framing
These two tools are not really competitors
The most useful thing to understand about Churnkey and Stunning is that they are aimed at two different kinds of churn. Treating them as interchangeable, which most comparison pages do, leads teams to buy the wrong one. Churnkey is built to reduce voluntary churn: it intercepts customers who try to cancel. Stunning is built to reduce involuntary churn: it recovers payments that failed.
That distinction matters because most subscription churn is a mix of the two, and 20-40% of it is involuntary, caused by a card failing rather than a customer deciding to leave. Which tool fits you depends entirely on where your churn actually comes from, which is worth measuring before you buy either. If you are unsure, start with what is involuntary churn.
A note on neutrality: I build a dunning tool, so I have skin in this game. I have kept the comparison below honest and confined my own product to a single clearly-marked box near the end. Everything else is a straight read on Churnkey versus Stunning, from setting both up on real Stripe accounts. For the deep dives, see the Churnkey review and Stunning review. Prices are current as of July 2026; verify before buying.
$250/mo
Churnkey Starter, billed yearly
As of July 2026 (churnkey.co)
~$120/mo
Stunning at $40K MRR, MRR-scaled
As of July 2026 (stunning.co)
20-40%
of SaaS churn is involuntary
The failed-payment problem both solve (ProfitWell)
The 10-second answer
Fighting cancellations? Churnkey (cancel flows, SDK, $250/mo flat). Fighting failed payments? Stunning (multi-channel recovery, no SDK, ~$120/mo at $40K MRR). Both Stripe-native, neither takes a cut of recovery.
Side by side
What's the difference between Churnkey and Stunning?
The full feature comparison, on the dimensions that actually decide it. Company-reported figures are labeled; prices verified July 2026.
Watch
The Stripe billing layer both tools build on
Honest take
Where Churnkey wins
Strengths
- Best-in-class cancel-flow builder for voluntary churn
- A/B testing on retention offers (pauses, discounts, downgrades)
- Flat pricing that does not climb with your MRR
- Multi-processor, not Stripe-only
Watch-outs
- $250/mo floor is steep below ~$30K MRR
- Cancel flows require a JavaScript SDK and a developer
- More platform than you need if you only want dunning
Churnkey earns its price when active cancellations hurt as much as failed cards. Its cancel-flow builder is the most complete on the market, and nothing Stunning offers competes with it on that axis.
Honest take
Where Stunning wins
Strengths
- 14+ years and $13B+ recovered, a long track record (company claim)
- Multi-channel recovery: email, SMS, and in-app
- No SDK, connects via webhook configuration
- No percentage of recovered revenue, ever
Watch-outs
- MRR-scaled cost climbs as you grow
- No cancel-flow deflection for voluntary churn
- Webhook setup still needs some technical work
Stunning is the safer pick when failed payments are the whole problem. Fourteen years of deliverability work and a multi-channel reach Churnkey does not match make it a focused recovery workhorse.
The money
How much does each one cost?
Pricing verified against each vendor's site, July 2026. Verify current rates before buying.
Churnkey
$250/mo (billed yearly)
- · Flat rate; about $300/mo if billed monthly
- · Starter fits under $5k/mo churn volume; higher tiers custom
- · No percentage of recovered revenue
- · Full detail in the Churnkey pricing guide
Stunning
~$120/mo at $40K MRR
- · MRR-scaled via a slider on stunning.co; cost climbs with MRR
- · Fixed monthly fee, not a percentage of recoveries
- · Cheaper than Churnkey below ~$50K MRR, closer above it
- · 14+ years, $13B+ recovered (company claim)
The verdict
Which should you choose?
Choose Churnkey if
Your churn is significantly voluntary, customers actively clicking Cancel, and you want to intercept them with a cancel flow that offers pauses, discounts, or downgrades. You have a developer to integrate the SDK, and you prefer a flat $250/mo that does not climb as you grow. Churnkey is the only one of the two built to reduce voluntary cancellations, not just recover failed payments.
Choose Stunning if
Your churn is mostly involuntary, failed payments rather than cancellations, and you want a mature, proven recovery tool that reaches customers across email, SMS, and in-app without an SDK. You are comfortable with MRR-scaled pricing (about $120/mo at $40K MRR) and value a 14-year track record over a cancel-flow builder you would not use.
It is close when
Both do solid Stripe dunning: branded emails, a card-update page, retries, and pre-dunning. If you only need failed-payment recovery and do not need cancel flows, the decision comes down to pricing model (flat vs MRR-scaled) and setup (SDK vs webhook). At that point, price and simplicity, not features, should decide it.
Vendor noteBudget alternative
Full disclosure, I make a third tool. If you only need failed-payment recovery and both of the above feel like more than you need, SubRevival (subrevival.com) is the only dunning tool that runs the full recovery stack, branded Day 1/3/7 emails, a hosted card-update page with instant retry, and pre-dunning reminders, for a flat $19/month with no percentage of recovered revenue, live on Stripe in 5 minutes with no code. It does not do cancel flows (Churnkey's specialty) or SMS (Stunning's), so it is the pick only when branded email recovery is all you need. Compare directly: vs Churnkey and vs Stunning.
Common questions
Churnkey vs Stunning FAQ
What's the difference between Churnkey and Stunning?
Which is cheaper, Churnkey or Stunning?
Does Churnkey or Stunning require a developer?
Do Churnkey or Stunning take a percentage of recovered revenue?
Which is better for failed-payment recovery specifically?
Which is better for reducing cancellations?
Is there a cheaper alternative to Churnkey and Stunning?
Keep reading
Churnkey vs Churn Buster
The other Churnkey head-to-head: cancel-flow deflection vs Churn Buster's deep, managed recovery, by churn type.
Read moreStunning Review (2026)
The hands-on breakdown of Stunning: multi-channel recovery, MRR-scaled pricing, and track record.
Read moreChurnkey Pricing (2026)
The sourced, tier-by-tier breakdown of what Churnkey actually costs at each stage.
Read more