If you run a SaaS on Stripe, about 9% of your subscription payments fail every month. Not because customers canceled, but because cards expired, hit their limit, or got flagged by the bank. This is involuntary churn, and it is one of the most fixable revenue leaks in SaaS.
Stripe's built-in Smart Retries recover about 38% of these failed payments. A dedicated dunning tool can push that to 60-80%. The difference, for a $10K MRR business, is roughly $3,000-5,000 in additional recovered revenue per year.
This guide compares 8 dunning tools available in 2026, focused on what matters for small SaaS: price, recovery channels, setup complexity, and actual features you get.
Quick Comparison Table
| Tool | Starting Price | Channels | Best For | |
|---|---|---|---|---|
| Rebounce | $3.50/mo | Retries, Email, SMS, WhatsApp, In-app Banner, Apple/Google Pay | Yes | SaaS of any size (Unlimited MRR on Scale) |
| Churn Buster | $249/mo | Retries, Email | No | Mid-market SaaS ($50K+ MRR) |
| Churnkey | $100/mo | Retries, Email, In-app | No | Full churn suite users |
| Baremetrics Recover | $129/mo (bundled) | Retries, Email, In-app | No | Analytics + dunning bundle |
| Stunning | $100/mo | Retries, Email | No | Stripe-focused SaaS |
| ChurnWard | $49/mo | Retries, Email | No | Budget-conscious small SaaS |
| MRRSaver | $39/mo | Retries, Email | No | Micro-SaaS, solo founders |
| RecoverKit | $79/mo | Retries, Email, SMS | No | SMS recovery users |
1. Rebounce
Price: $3.50/mo (Starter), $14/mo (Growth), $39/mo (Scale). Flat pricing, no revenue share.
Rebounce is a dedicated dunning tool built specifically for small SaaS businesses on Stripe. It connects via Stripe OAuth in about 5 minutes and immediately starts monitoring for failed payments.
What makes Rebounce different from every other tool on this list is WhatsApp recovery. When a payment fails, Rebounce can send the customer a WhatsApp message with a direct link to update their payment method. WhatsApp messages see 90%+ open rates, compared to 20-30% for dunning emails. In markets like Latin America, Europe, and Asia where WhatsApp is the default messaging app, this channel is a significant advantage.
The Growth plan also adds SMS recovery (via Twilio, no template approval needed), checkout recovery for abandoned Stripe Checkout sessions, an in-app payment banner (an embeddable JS snippet that shows "update your payment" banners directly on your site), a cancellation flow builder (survey, discount/pause offer, then confirm - retains customers before they cancel), and win-back campaigns (a 3-email re-engagement sequence for churned subscribers). All plans include Stripe Account Updater tracking and Apple Pay / Google Pay support for frictionless mobile payment updates.
The Scale plan ($39/mo) adds a revenue analytics dashboard with MRR tracking, recovery trends, and channel breakdown.
Other features include smart retries based on decline code classification (it treats an expired card differently from insufficient funds), customizable email dunning sequences, A/B testing for email templates, and a self-service payment update page for customers.
Best for: SaaS businesses on Stripe that want affordable, multi-channel dunning with WhatsApp recovery, in-app banners, cancellation flows, and win-back campaigns. Scale plan supports unlimited MRR.
Limitations: Stripe-only (no Paddle, Braintree, etc.).
2. Churn Buster
Price: From $249/mo.
Churn Buster is one of the original dunning tools, operating since 2014. It has battle-tested smart retry algorithms refined over millions of recovery attempts and well-designed default email templates that have been optimized over years.
The trade-off is price. At $249+/mo, Churn Buster is built for the mid-market. If your MRR is under $30K, the monthly cost may not justify the recovery. The platform focuses on email-based recovery and retries, with no WhatsApp or SMS channels.
Best for: Established SaaS businesses ($50K+ MRR) that want a proven, mature vendor with dedicated support.
Limitations: Expensive for small SaaS. Email-only recovery (no WhatsApp, no SMS). Feature set has not evolved as rapidly as newer competitors.
See full Rebounce vs Churn Buster comparison
3. Churnkey
Price: From $100/mo (scales with MRR).
Churnkey is more than a dunning tool. It is a full churn management platform that handles both involuntary churn (failed payments) and voluntary churn (cancellations). It includes a cancellation flow builder, retention offers, and churn analytics alongside its dunning features.
If you need both types of churn management in one platform, Churnkey covers a lot of ground. The in-app payment modals can also be effective for catching failures in real-time. However, the in-app features require code integration, and the broader scope means the dunning features may not be as deep as a dedicated tool.
Best for: SaaS teams that want voluntary + involuntary churn management in a single platform.
Limitations: More expensive ($100+/mo). Requires developer time for in-app features. No WhatsApp recovery. Can be complex for teams that only need dunning.
See full Rebounce vs Churnkey comparison
4. Baremetrics Recover
Price: From $129/mo (bundled with Baremetrics analytics).
Baremetrics is primarily a subscription analytics platform (MRR tracking, churn cohorts, forecasting), and Recover is its built-in dunning module. You cannot purchase Recover separately, so the starting price reflects the full analytics suite.
If you already need or use Baremetrics for analytics, adding Recover is convenient and effective. But if you only need dunning, you are paying for an analytics platform you may not use. The dunning features are solid but less specialized than dedicated tools.
Best for: SaaS teams already using (or needing) Baremetrics analytics who want integrated dunning.
Limitations: Not available standalone. $129/mo minimum includes analytics you may not need. No WhatsApp recovery.
See full Rebounce vs Baremetrics Recover comparison
5. Stunning
Price: From $100/mo.
Stunning is a Stripe-focused dunning tool that offers smart retries and email sequences. It has been around for several years and provides reliable, straightforward payment recovery for Stripe-based businesses.
Stunning does the basics well but has not expanded into newer recovery channels like WhatsApp or SMS. For teams that just want solid email-based dunning without frills, it is a dependable choice.
Best for: Stripe-focused SaaS that want reliable, no-surprises email dunning.
Limitations: $100/mo starting price. Email-only recovery. Fewer advanced features compared to newer alternatives.
6. ChurnWard
Price: From $49/mo.
ChurnWard is a newer entrant focused on affordability and simplicity. It offers smart retries and email dunning sequences at a price point accessible to smaller SaaS teams. The interface is straightforward and setup is quick.
The trade-off is a more limited feature set: no WhatsApp or SMS recovery, basic analytics, and fewer customization options for dunning sequences. At $49/mo, it still costs more than Rebounce ($3.50/mo) while offering fewer features.
Best for: Budget-conscious SaaS teams that want basic dunning without complexity.
Limitations: No WhatsApp or SMS. Basic feature set. More expensive than Rebounce with fewer features.
See full Rebounce vs ChurnWard comparison
7. MRRSaver
Price: From $39/mo.
MRRSaver is aimed at micro-SaaS and solo founders. It provides basic smart retries and email dunning at an affordable price. The setup is simple and the tool focuses on doing the fundamentals well.
Like ChurnWard, MRRSaver occupies the budget end of the market but lacks multi-channel recovery. It is a reasonable choice for very early-stage founders who want something basic running, but teams looking for higher recovery rates through WhatsApp or SMS will need to look elsewhere.
Best for: Micro-SaaS and solo founders wanting basic dunning at a low price.
Limitations: No WhatsApp or SMS. Limited advanced features. Smaller customer base and less proven at scale.
8. RecoverKit
Price: From $79/mo.
RecoverKit stands out from most competitors by including SMS as a recovery channel alongside email. SMS has better open rates than email (45-50%) though not as high as WhatsApp (90%+). For SaaS businesses with a primarily US-based customer base where WhatsApp adoption is lower, SMS can be an effective second channel.
The downside is that SMS delivery costs may add up on top of the base subscription, and the overall feature set is less advanced than tools like Rebounce (no A/B testing, basic decline code handling).
Best for: SaaS businesses that want SMS recovery alongside email, especially those with US-focused customers.
Limitations: No WhatsApp. Potential additional SMS costs. Fewer advanced dunning features.
See full Rebounce vs RecoverKit comparison
How to Choose the Right Dunning Tool
The right choice depends on your stage, budget, and what recovery channels matter for your customer base:
- Under $10K MRR, bootstrapped: Rebounce Starter ($3.50/mo). Affordable, fast to set up, with Account Updater tracking and Apple Pay / Google Pay included. Upgrade to Growth for SMS, WhatsApp, checkout recovery, in-app payment banners, cancellation flows, and win-back campaigns.
- $10K-$50K MRR, want full churn suite: Churnkey ($100+/mo) or Rebounce Growth ($14/mo). Rebounce now includes cancellation flow builder and win-back campaigns alongside dunning, at a fraction of the price.
- $10K-$50K MRR, need analytics + dunning: Baremetrics ($129+/mo). Makes sense if you need the analytics platform anyway.
- $50K+ MRR, want proven enterprise vendor: Churn Buster ($249+/mo). Longest track record, dedicated support.
- US-focused, want SMS: RecoverKit ($79/mo). Good if your customers are primarily in markets with lower WhatsApp adoption.
- Just want the basics, cheapest possible: MRRSaver ($39/mo). Bare-bones dunning at the lowest price point.
The WhatsApp Factor
Every tool on this list except Rebounce relies on email as the primary outreach channel. The problem is well-documented: dunning emails see 20-30% open rates. That means 70-80% of customers never even see your recovery message.
WhatsApp messages see 90%+ open rates. That is not a small improvement. It is the difference between reaching 2 in 10 customers and reaching 9 in 10. For SaaS with international customers (Latin America, Europe, Asia, Africa), WhatsApp is often the primary communication channel, not a secondary one.
As of April 2026, Rebounce is the only dunning tool offering both SMS and WhatsApp as recovery channels alongside email. Combined with checkout recovery for abandoned Stripe sessions, in-app payment banners, cancellation flow builder, win-back campaigns, revenue analytics, and Apple Pay / Google Pay support, this multi-channel approach is a significant competitive advantage for SaaS businesses looking to maximize their recovery rates.
What About Stripe's Built-in Retries?
Stripe Smart Retries are free and enabled by default. They use machine learning to retry failed payments at optimal times. The reported recovery rate is about 38%.
That sounds decent until you do the math. For a $10K MRR business losing 9% ($900/mo) to failed payments, Stripe recovers about $342. The remaining $558/month ($6,696/year) goes unrecovered.
A dedicated dunning tool adds email sequences, additional retry logic based on decline codes, and outreach channels like WhatsApp. This pushes recovery to 60-80%, recovering an additional $200-400/month. At Rebounce's $3.50/mo price, the ROI is immediate.
For a deeper dive, read our analysis of why Stripe's default retries aren't enough.
For a side-by-side comparison of all these tools, see our dunning tools comparison page.
Frequently Asked Questions
What is the cheapest dunning tool for SaaS?
Rebounce is the most affordable dedicated dunning tool at $3.50/mo with flat pricing and no revenue share. MRRSaver starts at $39/mo and ChurnWard at $49/mo. All three use flat monthly pricing, so your cost does not increase as your MRR grows.
Can I recover failed payments via WhatsApp or SMS?
Yes. Rebounce is currently the only dunning tool that supports both SMS and WhatsApp as payment recovery channels. WhatsApp messages see 90%+ open rates, SMS sees 45-50%, and email sits at 20-30%. Rebounce also offers checkout recovery for abandoned Stripe sessions, in-app payment banners, and Apple Pay / Google Pay for frictionless mobile payment updates.
How much does involuntary churn cost?
On average, 9% of SaaS subscription payments fail each month. For a $10K MRR business, that is $900/month or $10,800/year in potential lost revenue. With only Stripe default retries (~38% recovery), about $558/month ($6,696/year) remains unrecovered.
Is Stripe's default retry enough?
Stripe Smart Retries recover about 38% of failed payments. Dedicated dunning tools recover 60-80% by adding email sequences, smarter retry timing based on decline codes, and channels like WhatsApp. The difference typically pays for the tool many times over.
What's the difference between Rebounce and Churnkey?
Rebounce starts at $3.50/mo and now covers both involuntary and voluntary churn - with WhatsApp recovery, in-app payment banners, a cancellation flow builder, win-back campaigns, and Apple Pay / Google Pay. Churnkey is a broader platform ($100+/mo) with in-app modals and churn analytics. Rebounce offers comparable churn-fighting features at a fraction of the price.
What's a good recovery rate for failed payments?
With Stripe defaults alone, expect about 38%. With a dedicated dunning tool, 60-80% recovery is achievable. The best results come from combining smart retry timing (based on decline code analysis) with multi-channel outreach through email, SMS, WhatsApp, and in-app payment banners, plus checkout recovery, Apple Pay / Google Pay, and win-back campaigns for churned subscribers.
To see the exact dollar impact for your business, use our free churn calculator. And if you want ready-made copy, we publish a full dunning template library (email, SMS, WhatsApp) with decline-code-specific variants.