Rosie is a tidy, low-entry US AI phone-answering service; the OneBookPlus AI Receptionist answers calls and SMS in 10+ languages, books straight into your own calendar, and runs on an Australian number with AU hosting.
TL;DR
Rosie is a 24/7 AI phone answerer for small businesses, with a simple flat-minute pricing model, native iOS/Android apps and fast website-trained setup — but it is US-centric, bilingual English/Spanish only, and booking lives on the $149/mo Scale plan via Google Calendar, Calendly and Zapier rather than a built-in calendar.
OneBookPlus answers calls and SMS 24/7 with a Claude-powered receptionist that books and reschedules straight into your OneBookPlus calendar, speaks 10+ languages, includes a free Australian number, runs AU-hosted in AWS Sydney, and sits inside one platform with your CRM, calendar and invoicing — for a flat $49/mo with no per-minute metering.
Who wins where: Choose Rosie if you want the cheapest US flat-minute answerer with native mobile apps and no unique-caller caps. Choose OneBookPlus if you are an Australian business that wants native booking, a local number, multilingual answering and an all-in-one platform rather than an answering layer bolted onto separate tools.
Key takeaways
5Side by side
The capabilities that matter when you’re choosing how your phone gets answered. Competitor cells link to the page that substantiates (or fails to substantiate) the claim.
| Category | Feature | OneBookPlus | Rosie |
|---|---|---|---|
| AI answering | 24/7 AI call answering | Yes | Yes |
| Answers inbound SMS as well as calls | Yes | Website-texting add-on $50/mo [src] | |
| Bookings | Books and reschedules into your own calendar | Native calendar | Scale+ via Google/Calendly + Zapier [src] |
| Phone number | Free Australian number included | Yes | No |
| Languages | Multilingual answering | English + 10+ | English + Spanish [src] |
| Live transfer | Live human take-over to your phone | Push-to-takeover | Call transfers on Scale+ [src] |
| Attribution | Built-in call tracking and attribution | Per-number + UTM | Not documented |
| All-in-one | Native CRM, calendar and invoicing in one platform | Yes | Integration-based (Zapier) [src] |
| Local presence | Australian data residency / AU presence | AWS Sydney | No published AU presence [src] |
| Records | Audio call recording | No (text transcripts only) | Not documented |
| Pricing | Pricing model | Flat, no metering | Flat minutes + overage [src] |
| Starting price (AUD, inc. GST) | $49/mo inc. GST | From $49/mo | |
| Flat, no per-minute metering. Requires AI Companion ($25/mo). Free AU number included. | Up to 250 min on Professional; booking and transfers from $149/mo Scale. As published, USD. |
Where Rosie wins
Rosie is a genuinely strong, focused product. The $49/mo entry tier is a low barrier, and the flat-minute model is easy to reason about with no unique-caller caps — you simply pay for the minutes you use, with a reported $0.25/min overage. Setup is very fast because Rosie scans your website to train the assistant, and it ships polished native iOS and Android apps plus spam and robocall filtering. Bilingual English/Spanish answering is available on every plan, and a 7-day trial lets you try it before committing. For a US small business that mainly wants the phone answered cleanly and doesn't need a built-in calendar, CRM or local Australian presence, Rosie is a sensible, well-built choice.
Where the OneBookPlus AI Receptionist wins
OneBookPlus books and reschedules appointments straight into your own OneBookPlus calendar on the single $49/mo plan, then texts the caller a confirmation and a self-service reschedule link. With Rosie, appointment booking starts on the $149/mo Scale tier and runs through Google Calendar, Calendly and Zapier rather than a calendar that's already part of your system.
You get a free Australian phone number (with port-in and toll-free 1800 options), AU hosting in AWS Sydney, and a greeting that builds in Australian recording-consent and AI disclosure. Rosie is US-based in Pittsburgh with US-default accents and no published Australian numbers or data residency, so callers hear an American-sounding assistant on a non-local setup.
The receptionist captures callers as leads into your contacts, recognises returning callers by phone number, answers your hours, services, pricing and custom knowledge, and feeds everything — transcripts, detected intent, sentiment and outcomes — into an Insights dashboard alongside your CRM, calendar and invoicing. It answers in English plus 10+ languages via a press-1 menu, where Rosie is bilingual English/Spanish and integration-based for the rest of the stack.
Pricing, normalised
Both start at the same headline number, but the models differ: OneBookPlus is a flat AUD price with extra conversations as simple top-ups, while Rosie meters minutes per tier. Rosie figures are as published on heyrosie.com/pricing (USD); the $0.25/min overage is reported and not shown on the live pricing page.
OneBookPlus AI Receptionist
All AUD, inc. GST. See plans on /pricing.
Rosie
Rosie pricing as published on heyrosie.com/pricing (USD). Overage rate reported, not shown on the live pricing page. heyrosie.com/pricing
FAQ
Yes. OneBookPlus includes a free Australian phone number, with port-in and toll-free 1800 options (a small carrier fee applies to 1800). The receptionist is hosted AU-side in AWS Sydney and the greeting builds in Australian recording-consent and AI disclosure. Rosie is US-based in Pittsburgh and does not publish Australian numbers or an AU presence, and uses US-default accents.
Both can, but differently. OneBookPlus books and reschedules straight into your own OneBookPlus calendar on the $49/mo plan and texts the caller a confirmation plus a self-service reschedule link. With Rosie, appointment booking starts on the $149/mo Scale plan and works through Google Calendar, Calendly and Zapier rather than a built-in calendar.
Both start at $49/mo. OneBookPlus is a flat $49/mo inc. GST (requires AI Companion at $25/mo) with no per-minute or per-call metering — extra conversations are simple top-ups. Rosie's $49/mo Professional plan covers up to 250 minutes, with booking and transfers on the $149/mo Scale plan; its reported overage is $0.25/min (not on the live pricing page). Rosie figures are as published on heyrosie.com/pricing in USD.
OneBookPlus answers in English plus 10+ languages — Spanish, French, German, Italian, Portuguese, Mandarin, Hindi, Arabic, Japanese, Korean and more — via a simple press-1 IVR menu with a default voice per language. Rosie is bilingual, supporting English and Spanish.
Rosie has a low $49/mo entry, a simple flat-minute model with no unique-caller caps, very fast website-trained setup, polished native iOS and Android apps, built-in spam and robocall filtering, and bilingual English/Spanish on every plan. If you're a US business that mainly wants the phone answered cleanly and don't need native booking, a local Australian number or an all-in-one platform, Rosie is a strong, well-built option.
No. OneBookPlus gives you full text transcripts — not audio recordings — with the outcome, detected intent, a summary and per-conversation sentiment, plus built-in call tracking via per-number campaign tagging and web-to-call UTM passthrough. It does not offer audio call recording, dynamic number insertion or keyword-level attribution; if those are essential, a dedicated call-tracking platform is the better fit.
Answer every call and text in 10+ languages, book straight into your calendar, and keep it all on an Australian number — for a flat $49/mo with no per-minute metering.
Free AU number included · 14-day trial · Cancel anytime
About this comparison
Feature claims about OneBookPlus reflect what is shipping today on onebookplus.com.au. Rosie pricing and feature claims were last verified against Rosie’s public Australian product pages on the date below; vendor pricing changes frequently, so check the Rosie website for your specific situation before making a decision.
Disclosure: OneBookPlus publishes this comparison and stands to benefit if you switch. We aim to compare like-for-like on capability and Australian tax compliance — if you spot something out of date, email hello@onebookplus.com.au and we’ll review it.
About the author
Founder & CEO, OneBookPlus
Bishal has over a decade of experience in digital marketing, web development, and small business consulting across Australia. Bishal regularly assists Australian small to medium businesses with software stack consolidation — including the trade-offs of moving from Rosie to an integrated platform. The comparison above is informed by direct migration experience, not a single read of the Rosie marketing site.
Last reviewed and updated: May 2026 by Bishal Shrestha