Churn Buster and Gravy Solutions sit on opposite ends of the payment recovery spectrum. Churn Buster is software that automates email-based dunning sequences. Gravy employs real people who call your customers to recover payments. Understanding which approach fits your business means understanding the trade-offs between scale and personal touch.
The quick comparison
| Feature | Churn Buster | Gravy Solutions |
|---|---|---|
| Recovery method | Automated email sequences | Human recovery agents (phone, email, text) |
| Pricing model | Flat monthly fee | Revenue share (% of recovered) |
| Time to first contact | Minutes | Hours to next business day |
| SMS support | No | Agents can call/text |
| Setup time | Quick (connect billing) | Onboarding process (days/weeks) |
| Hands-on management | Self-service | Fully managed |
| Stripe integration | Yes | Yes |
| Other gateways | Braintree, Recurly, Chargebee | Multiple platforms |
| Best for | High-volume automated recovery | High-value accounts needing personal outreach |
What Churn Buster does well
Churn Buster is one of the most established dunning tools in the SaaS space. They've been optimizing email-based recovery for years, and their experience shows.
Battle-tested email sequences. Churn Buster provides pre-built email campaigns based on what works across their customer base. These aren't generic templates. They've analyzed recovery patterns across thousands of SaaS companies and know which subject lines, timing, and CTAs perform best.
Smart campaign logic. Emails adapt based on what's happening with the payment. If a retry succeeds, the sequence stops automatically. If the failure code changes, the messaging adjusts. This reduces unnecessary emails and keeps the experience clean for your customers.
In-app payment update forms. Churn Buster provides embeddable forms and hosted pages for card updates, reducing the friction of getting customers to take action.
Passive retry coordination. Their system coordinates with your billing platform's retry logic to avoid conflicts. Emails are timed around retries so customers aren't asked to update their card right before an automatic retry might succeed.
Analytics and reporting. Detailed breakdowns of recovery rates by failure type, campaign step, and time period. You can see what's working and where customers are dropping off.
What Churn Buster struggles with
No SMS. This is the most significant gap. Churn Buster is email-only. In 2026, when SMS open rates are 90%+ compared to 20-25% for email, this limits recovery potential. Customers who don't open emails remain unreached.
No phone outreach. For high-value accounts, an automated email doesn't carry the same weight as a personal phone call. Churn Buster can't replicate that.
Passive approach for complex situations. If a customer has questions about their bill, is confused about the charge, or needs reassurance, an email with a "update your card" button doesn't address the underlying concern.
Higher price point. Churn Buster is more expensive than some newer dunning tools, typically $300-500+/month for mid-size SaaS companies. The quality justifies it for many, but budget-conscious teams may find it steep.
What Gravy does well
Gravy's model is fundamentally different. They assign recovery specialists to your account who personally reach out to customers with failed payments.
Human connection. A real person calling your customer and saying "I noticed your subscription payment didn't go through, can I help?" is powerful. It shows the customer they matter, and the agent can handle objections, answer questions, and troubleshoot in real time.
High-value account recovery. For customers paying $200+/month, the ROI on a human phone call can be substantial. Gravy's agents can save customers who aren't just dealing with a card issue but are also questioning whether to continue their subscription.
Fully managed. You don't configure sequences or write emails. Gravy handles the entire process. For teams without dedicated growth or retention staff, this is a relief.
Multi-channel human outreach. Gravy's agents use phone, email, and text as needed. They read the situation and choose the right channel, something an automated system can't do with the same nuance.
Works across platforms. Gravy isn't limited to one billing system. They can work with whatever payment infrastructure you use.
What Gravy struggles with
Speed. Human agents need to review accounts and make calls during business hours. The first outreach is typically hours or a day after the failure. The first hour is when automated tools have the highest recovery rates.
Cost at scale. Revenue share pricing means Gravy gets more expensive as you recover more. For a SaaS recovering $50K/month in failed payments, Gravy's fee could be $5,000-12,500 depending on the share percentage. That's significantly more than any software tool.
Scalability. Human agents can only handle so many accounts per day. If you have thousands of failed payments monthly, the model strains. Software handles volume effortlessly.
Less control. You're trusting Gravy's team to represent your brand. You can set guidelines, but you don't control every word of every interaction.
Inconsistency. Human quality varies. Some agents are better than others. Some days are better than others. Software delivers the same experience every time.
The pricing breakdown
Churn Buster: Flat monthly fee based on customer count and volume. Typically $100-500+/month for most SaaS companies. You keep all recovered revenue.
Gravy Solutions: Revenue share model. Gravy takes a percentage (often 10-25%) of every payment they successfully recover. No upfront monthly fee in most arrangements, but costs scale with success.
For a SaaS with $30K in monthly failed payments and a 60% recovery rate:
| Metric | Churn Buster | Gravy |
|---|---|---|
| Monthly failed payments | $30,000 | $30,000 |
| Estimated recovery rate | 55-65% | 65-75% |
| Revenue recovered | ~$18,000 | ~$21,000 |
| Cost | $300-500/month | $2,100-5,250 (10-25% share) |
| Net recovered | ~$17,500-17,700 | ~$15,750-18,900 |
Gravy might recover more in absolute terms, but after the revenue share, the net recovery can be similar or even lower than Churn Buster's, especially as volumes increase.
Who should pick Churn Buster
Churn Buster makes sense if:
- You have moderate to high volume of failed payments
- Your average subscription value is under $200/month
- You want predictable, fixed costs for recovery
- You prefer a self-service, hands-off tool
- You want detailed analytics on recovery performance
- Speed of first contact matters (automated emails go out immediately)
Typical Churn Buster customer: Established SaaS with 1,000+ subscribers, looking for reliable, automated recovery that runs in the background without ongoing management.
Who should pick Gravy Solutions
Gravy makes sense if:
- You have high-value subscriptions ($300+/month)
- You have a smaller number of accounts where personal touch matters
- Phone outreach aligns with your customer experience
- You want someone else to handle recovery entirely
- Your customers respond better to phone calls than emails
- You're comfortable with revenue share pricing at your volume
Typical Gravy customer: B2C subscription business with higher price points, membership organizations, or companies with a premium brand where personal outreach strengthens the relationship.
What about Rekko?
Both Churn Buster and Gravy have clear trade-offs. Churn Buster automates well but lacks SMS. Gravy adds the human touch but at a high price and slower speed.
Rekko offers a middle ground: automated email + SMS dunning at flat-rate pricing. The SMS channel fills the gap that Churn Buster's email-only approach leaves, reaching customers who don't open emails. And the flat pricing avoids the escalating costs of Gravy's revenue share.
If you want the speed and cost predictability of software with better reach than email alone, Rekko is worth evaluating.
The bottom line
Pick Churn Buster if you want proven, automated email recovery with detailed analytics and predictable costs. It's the reliable workhorse for SaaS companies at scale.
Pick Gravy if you have high-value accounts where personal phone outreach can make the difference, and the revenue share model makes sense at your volume. The human touch is genuinely valuable for the right business type.
Consider Rekko if you want the automation and cost structure of software tools with the added reach of SMS. For most SaaS companies, the combination of email + SMS recovers more than email alone, without the cost of human agents.
The right choice depends on your average deal size, payment failure volume, and whether your customers are better reached by automated messages or phone calls.