Quick take
Synthflow is a strong voice-agent builder. Chatoo is a chat + voice AI receptionist for service businesses: one knowledge base, website widget, phone answering, appointment flows, and a human inbox when AI should stop.
Comparison table
| Topic | Chatoo | Synthflow | | --- | --- | --- | | Primary focus | Chat + voice receptionist | Voice agent platform | | Website chat agent | Yes | Not the core offer | | Phone voice | Yes (Growth+) | Yes | | Shared brain across channels | Yes | Voice-centric | | Human inbox when AI ends | Yes | Depends on your build | | Pricing shape | Flat plans; Inbox from €9.99; voice minutes bundled on Growth+ | Often usage / per-minute oriented (see Synthflow pricing) | | Ideal user | SMB service operators | Teams building custom voice flows |
Where Chatoo is stronger
- Dual-channel coverage without maintaining two products
- Simpler packaging for non-technical operators
- Built-in human inbox continuity
- Appointment-oriented workflows for local businesses
Where Synthflow is stronger
- Flexible voice flow building for complex telephony use cases
- Broader “build any voice agent” positioning
- May suit teams with dedicated automation engineers
Migration notes (Synthflow → Chatoo)
- List the call intents you actually need (hours, booking, intake, message-taking).
- Recreate those intents as Chatoo knowledge + booking rules — not a 1:1 flow clone.
- Forward a secondary line or after-hours traffic first.
- Add the website widget so chat matches voice answers.
- Expand to daytime overflow once transcripts look solid.
Sources
Synthflow public pricing pages (checked 2026-08-11). Confirm current rates and limits before switching.