Stunning and Churn Buster are both focused dunning tools — no cancel flows, no surveys, just payment recovery. But they have different strengths. Here's how to choose between them.
Quick comparison
| Feature | Stunning | Churn Buster |
|---|---|---|
| Primary strength | SMS + email | Email sequences |
| SMS support | Yes | No |
| Smart retries | Yes | Yes |
| Email customization | Good | Excellent |
| Pricing model | Flat monthly | Flat monthly |
| Analytics | Basic | More detailed |
| Stripe integration | Yes | Yes |
What Stunning does well
Stunning's killer feature is SMS support. In a world where email open rates hover around 20-25%, SMS cuts through with 90%+ read rates.
Adding SMS to a dunning sequence typically improves recovery by 15-25%. That's the difference between recovering 50% of failed payments and recovering 65-70%. For many SaaS, this alone justifies choosing Stunning.
The SMS advantage:
- Reaches customers who don't check email
- Read within minutes, not hours or days
- Higher click-through rates
- Creates urgency that email can't match
Stunning also has a clean, simple interface. Setup is straightforward: connect Stripe, configure your sequence, go live. No complicated onboarding.
Pricing is flat monthly based on customer count. You pay the same whether you recover $500 or $50,000 — all recovered revenue is yours.
What Stunning lacks
Email customization is limited. You can customize content and timing, but the template flexibility isn't as deep as Churn Buster. For most SaaS this is fine, but brands with specific design requirements might feel constrained.
Analytics are basic. You get the essential metrics — recovery rate, failure rate, email performance — but not the deep segmentation and cohort analysis that larger companies want.
Smaller ecosystem. Stunning is newer and leaner. Less community knowledge, fewer case studies, smaller support team.
What Churn Buster does well
Churn Buster has been doing dunning for years, and it shows in the polish.
Email sequences are excellent. The default templates are battle-tested and convert well. Customization is deep — you can adjust copy, timing, design, and logic extensively.
Campaign analytics are detailed. See recovery rates by email, by day, by customer segment. A/B test different approaches. The data helps you optimize continuously.
Reliability and support. Churn Buster has processed millions of recovery attempts. They've seen edge cases you haven't imagined. Support is responsive and knowledgeable.
Documentation and resources. Extensive guides, best practices, and case studies help you get the most from the tool.
What Churn Buster lacks
No SMS. This is the big gap. Email-only dunning leaves recovery on the table. In 2026, not offering SMS for payment recovery is a significant limitation.
Can feel over-engineered. If you just want simple dunning, Churn Buster's extensive options might be more than you need. The flexibility is there, but so is complexity.
No multi-channel future. If you want to add SMS later, you'd need a separate tool or switch platforms.
Pricing comparison
Both use flat monthly pricing, but structures differ:
Stunning: Based on customer count. Roughly $50-200/month for most SaaS. Includes SMS.
Churn Buster: Based on customer count with tiers. Similar range to Stunning, but SMS would require additional integration.
For comparable customer counts, pricing is similar. The difference is what you get: Stunning includes SMS, Churn Buster has deeper email features.
Who should choose Stunning
Stunning is the better choice if:
- You want SMS — This is non-negotiable for maximizing recovery
- You value simplicity — Quick setup, straightforward interface
- You're earlier stage — Don't need enterprise analytics
- Multi-channel matters — Email + SMS from day one
Typical Stunning customer: Bootstrapped or seed-stage SaaS, technical founder who wants to set it and forget it, anyone who's seen SMS recovery data.
Who should choose Churn Buster
Churn Buster is the better choice if:
- Email-only is acceptable — You're okay leaving SMS recovery on the table
- Deep customization matters — Specific brand requirements, complex sequences
- Analytics drive decisions — You'll actually use detailed segmentation
- You want a proven platform — Years of track record
Typical Churn Buster customer: Established SaaS with dedicated ops team, companies with specific email brand guidelines, data-driven growth teams.
The SMS question
Let's be direct: the biggest difference is SMS support.
Research consistently shows SMS adds 15-25% to recovery rates. At scale, this is real money.
Example: 1,000 customers, $50 average, 7% failure rate, 50% base recovery
- Without SMS: 35 recovered = $1,750/month
- With SMS (+20%): 42 recovered = $2,100/month
- Difference: $350/month = $4,200/year
Is that worth choosing one tool over another? For most SaaS, yes.
What about Rekko?
Both Stunning and Churn Buster are solid tools, but neither is perfect.
Stunning has SMS but simpler emails. Churn Buster has great emails but no SMS.
Rekko offers both: multi-channel dunning with email + SMS, plus competitive flat-rate pricing. If the comparison is "SMS vs better emails," Rekko aims to give you both.
See how Rekko compares to Stunning → See how Rekko compares to Churn Buster →
The verdict
Choose Stunning if SMS is important to you (and it should be). The multi-channel approach recovers more payments, and the simplicity is a feature for busy teams.
Choose Churn Buster if you need deep email customization and detailed analytics, and you're willing to accept email-only limitations.
Consider Rekko if you want the best of both worlds: SMS capability with solid email features at flat-rate pricing.
The dunning tool market has matured. All these options work. The question is which fits your priorities and budget.