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 simple minute-bucket pricing (250 / 1,000 / 2,000 min that auto-upgrades when you run over), 10+ agent voices, native iOS/Android apps and fast website-trained setup — but it is US-centric, bilingual English/Spanish only, and appointment booking lives on the $149/mo Scale plan via Google Calendar and Calendly 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 one of the cheapest US AI answerers, native mobile apps, no unique-caller caps and a minute-bucket plan that auto-upgrades. Choose OneBookPlus if you are an Australian business that wants native booking on the entry plan, 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 | Minute buckets, auto-upgrade [src] |
| Starting price (AUD, inc. GST) | $49/mo inc. GST | From $49/mo USD | |
| Flat, no per-minute metering. Requires AI Companion ($25/mo). Free AU number included. | Up to 250 min on Professional; booking and call transfers only from the $149/mo Scale plan. As published, USD. |
Where Rosie wins
Rosie is a genuinely strong, focused product. The $49/mo Professional tier is a low barrier — among the cheapest AI answerers on the market — and the minute-bucket model is easy to reason about with no unique-caller caps: you pick a bucket (250, 1,000 or 2,000 minutes) and Rosie auto-upgrades you to the next tier if you run over, so there is no surprise per-minute overage line. Setup is very fast because Rosie scans your website to train the assistant, it offers 10+ agent voices, and it ships polished native iOS and Android apps plus spam and robocall detection. Bilingual English/Spanish answering is available on every plan, and a 7-day free trial with all features 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 $49/mo headline, but the models differ: OneBookPlus is a flat AUD price inc. GST with extra conversations as simple top-ups, while Rosie sells minute buckets per tier (250 / 1,000 / 2,000 minutes) and auto-upgrades you to the next tier if you run over. Rosie figures are as published on heyrosie.com/pricing in USD; no per-minute overage rate is published on the page.
OneBookPlus AI Receptionist
All AUD, inc. GST. See plans on /pricing.
Rosie
Rosie pricing as published on heyrosie.com/pricing (USD). No per-minute overage is published — plans auto-upgrade to the next tier when the minute bucket is exceeded. Subject to change; verify at 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 the same $49/mo headline. 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; appointment booking and call transfers only unlock on the $149/mo Scale plan (up to 1,000 minutes), and Growth is $299/mo for up to 2,000 minutes. Rosie doesn't publish a per-minute overage rate — it auto-upgrades you to the next tier if you exceed your bucket. Rosie figures are as published on heyrosie.com/pricing in USD; OneBookPlus is AUD inc. GST.
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 (one of the cheapest AI answerers going), a simple minute-bucket model with no unique-caller caps that auto-upgrades instead of charging per-minute overage, very fast website-trained setup, 10+ agent voices, polished native iOS and Android apps, built-in spam and robocall detection, 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 on the entry plan, 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