CallMerlin vs Rebump
CallMerlin
callmerlin.appRebump
rebump.ccSide by side
| Figure | CallMerlin | Rebump |
|---|---|---|
| Price from | €55/mo | $9.99/mo |
| Free plan | — | — |
| Free trial | Yes | Yes |
| Open source | — | — |
| Web | Yes | Yes |
| Windows | Yes | — |
| macOS | Yes | — |
| iOS | Yes | Yes |
| Android | Yes | Yes |
| Plans published | 4 | 3 |
| Spec score · Sales Follow-Up Software | 8.6 (#6) | 8.0 (#16) |
| Integrations | The integrations page lists 96 native deep integrations and says 900+ are available through managed connectors. | Rebump supports CRM workflows through sequence-specific BCC addresses, while Zapier integration and API access are listed for Unlimited Premium. |
| Product | CallMerlin describes itself as an AI Chief of Staff that connects to business systems and can be used through phone, chat, widget, desktop, mobile, Slack and Teams. | Rebump automates customized follow-up emails to recipients when they have not replied. |
| Support | The Trust Center lists [email protected] and says it responds to privacy requests within 7 days. | The maker provides a contact form for questions and comments. |
Plans
CallMerlin
- Starter€55 a month
- Professional€109 a month
- Business€219 a month
- EnterprisePriced on request
Rebump
- Unlimited$9.99 a month
- Unlimited Plus$24.99 a month
- Unlimited Premium$44.99 a month
In their own words
CallMerlin
CallMerlin describes itself as an AI Chief of Staff that connects to business systems and can be used through phone, chat, widget, desktop, mobile, Slack and Teams. Its workflows can span multiple systems, respond to triggers and include an analysis step with auto-inject. Reads can happen immediately, while writes, emails and payment files wait for approval unless direct execution is enabled. The integrations page lists 96 native deep integrations and says 900+ are available through managed connectors, with examples including HubSpot, Salesforce, Slack, Moneybird, Microsoft 365, Gmail, Stripe, Shopify and Zoom. CallMerlin says each teammate has an individual PIN and permissions are enforced server-side. Credentials use AES-256-GCM encryption, data in transit is protected by TLS, and access uses PIN plus 2FA. Call transcripts and AI summaries are kept for at most 90 days by default; audio is not retained. Starter costs €55/mo (annual), and a 7-day trial is offered; there is no free plan. Android is in closed alpha and the iOS App Store listing is coming soon.