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Mio vs Rosie

Two fact sheets from our own research, side by side — pricing, platforms, API access and status re-checked by us rather than quoted from the vendors. Mio starts at $0.50, Rosie at $49.

Side by side

FactMioRosie
CategoryVoice Agents & Phone AIVoice Support & Call Centers
Pricing modelPaidPaid
Starts at$0.50 minute$49 month
Public APINoNo
PlatformsWebWeb, iOS, Android
CompanyHalf Moon Labs LLCHey, It's Rosie!
Launched2024
Last verifiedSep 1, 2026Sep 1, 2026

What our research says

Mio

Mio removes the worst part of calling customer service or a government office: the hold time and the phone tree. It hands off to a human for anything sensitive rather than pretending to be you, which is a reasonable trust boundary. The pay-per-call pricing means costs stay unpredictable if Mio becomes part of a daily workflow rather than an occasional time-saver.

Pros

  • Waits on hold and through phone menus so you don't have to
  • Hands off to a live human for sensitive topics instead of acting alone
  • No charge if the call goes unanswered
  • No subscription commitment, pay only for calls placed

Cons

  • Per-call pricing can add up for anyone calling frequently
  • Requires a pre-authorization hold before every call
  • Limited to phone-based tasks, not a general assistant

Rosie

Rosie fits small businesses that lose real revenue to missed calls and want a receptionist that never sleeps, without hiring one. It's self-funded and priced per-minute-bucket, so a business with unpredictable call volume needs to watch which tier they land in.

Pros

  • Trains itself from the business website and Google Business Profile
  • Direct calendar booking and call transfers on higher tiers
  • Every call comes with a recording, transcript, and summary
  • Free website chat widget included on all plans

Cons

  • Minutes are capped per tier; heavy call volume forces an upgrade
  • Only bilingual (English/Spanish), not broader multilingual support
  • Higher-tier features like priority transfers and white-glove onboarding are gated to the $299 plan

Which one fits

Choose Mio if you need

  • Anyone who dreads calling the IRS, USCIS, or insurance hotlines
  • People booking routine appointments (pharmacy, dentist) by phone
  • Occasional callers who don't want a monthly subscription

Choose Rosie if you need

  • Small businesses that miss calls during busy hours or after hours
  • Service businesses wanting appointments booked directly into a calendar
  • Owners wanting spam and sales calls filtered out automatically

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