OnCallClerk vs Johnni AI
The short answer
- OnCallClerk costs least at 100 calls a month: $99.
- Johnni AI costs least at 500: A$559 (about $386).
- Pick OnCallClerk if you want the lower bill at 100 calls or a summary by text after each call.
- Pick Johnni AI if you want the lower bill at 500 calls.
 OnCallClerksolo trades and service firms that need booking and urgent-call routing from day oneVisit site |  Johnni AIAustralian and NZ trades who miss calls on the job and want the booking madeVisit site | |
|---|---|---|
| Cost | ||
| At 100 calls a month | OnCallClerk$99Lowest | Johnni AIA$144about $100 |
| At 500 calls a month | OnCallClerk$399 | Johnni AIA$559about $386Lowest |
| Advertised from | OnCallClerk$29 a month | Johnni AIA$49 (about $34) a monthabout $34 |
| The advertised plan covers | OnCallClerkThe $29 plan it advertises covers 72 of 100 calls. No price is published past that. | Johnni AIThe A$49 (about $34) plan covers 24 of 100 calls.76 cost extra. |
| Bills | OnCallClerkper minute | Johnni AIper minute |
| Keeps answering past your allowance | OnCallClerkNot stated | Johnni AIYesCalls keep being answered past the allowance and the extra minutes are billed per minute |
| Free trial or plan | OnCallClerkPartlyEvery plan opens with a 14-day free trial on a real number | Johnni AIPartlyThe 7 day trial comes with 30 free minutes to set up and test the receptionist |
| Month to month, cancel online | OnCallClerkYesBilling is month to month with no contract | Johnni AIYesReceptionist plans are month to month with no lock-in, and you can terminate at any time |
| On the call | ||
| Books appointments | OnCallClerkYesThe agent checks live calendar availability | Johnni AIYesIt checks the live calendar and books into Google Calendar during the call |
| Transfers to a person | OnCallClerkYesTransfers are rule-based on call type, time of day or caller request | Johnni AIYesWarm transfer is on every plan: it puts the caller through and briefs you first |
| Human receptionists as backup | OnCallClerkNoThere is no human team behind the agent | Johnni AINoThere is no vendor-staffed human team behind the AI |
| After-hours rules | OnCallClerkYesCoverage is round-the-clock including nights, weekends and public holidays | Johnni AIYesAnswers 24/7 including nights, weekends and public holidays, and you choose the scope |
| Urgent calls escalated | OnCallClerkYesYou set what counts as urgent | Johnni AIPartlyEscalation chains that ring an on-call roster until someone accepts are offered in the custom build tier, not in the self-serve plans |
| Texts your callers | OnCallClerkPartlyThe agent sends the caller an SMS confirmation when it books | Johnni AIPartlyTexting the caller works but is a paid add-on at $50 a month on every plan |
| Call summary by text | OnCallClerkYesEvery call produces a transcript and structured summary delivered by email, SMS or both | Johnni AIPartlyEmail summaries plus a recording and transcript are on every plan |
| Language, privacy and trying it | ||
| Languages | OnCallClerkNot stated | Johnni AIPartlyEnglish only |
| HIPAA, with a signed BAA | OnCallClerkNot stated | Johnni AINot stated |
| Hear it before you buy | OnCallClerkYesA toll-free US demo number is published for calling the AI receptionist yourself | Johnni AIYesThere is a live demo number you can ring to hear the same receptionist |
| What it connects to | ||
| Google Calendar | OnCallClerkYesGoogle Calendar is a native integration that writes the event mid-call | Johnni AIYesGoogle Calendar sync and the vendor's own free Scheduler are included on every plan |
| Outlook | OnCallClerkYesGoogle Calendar is a native integration that writes the event mid-call | Johnni AIPartlyThe site names no Outlook, Microsoft 365 or Calendly booking path |
| Calendly | OnCallClerkYesGoogle Calendar is a native integration that writes the event mid-call | Johnni AIPartlyThe site names no Outlook, Microsoft 365 or Calendly booking path |
| Your trade’s software | OnCallClerkPartlyServiceTitan, Jobber and Housecall Pro are reached through signed webhooks rather than native apps, and no dental, legal | Johnni AIPartlyTrade job software is supported in principle, naming ServiceM8, simPRO and ServiceTitan |
| Keep your number | OnCallClerkYesYou can keep your current business line and forward it to the agent | Johnni AIYesYou keep your existing business number and forward calls to the Johnni local number |
| In short | ||
| What it is | OnCallClerkOnCallClerk is an AI receptionist that answers a small business's phone around the clock, holds a conversation, captures caller details, books appointments and transfers urgent calls. Setup is a no-code wizard with industry templates, a voice and either a new number or call forwarding.All answers for OnCallClerk | Johnni AIJohnni AI is an Australian AI receptionist that answers a small business's phone 24/7 in an Australian or New Zealand voice, qualifies the inquiry and books the job. It also makes follow-up calls and answers website voice and text chats.All answers for Johnni AI |
| Checked | OnCallClerkOctober 15, 2026 | Johnni AIOctober 15, 2026 |
Costs are for 100 or 500 calls a month of 2½ minutes each, on the cheapest public plan. How we price
“About” figures are converted at the European Central Bank rate of Oct 15, 2026.