Comparison · Rosie

Mainbrace vs Rosie — built for plumbing, not any small business.

Rosie answers calls well. Mainbrace answers calls well, then triages the photo against your previous plumbing work, drafts a regional-priced quote in your voice in under six minutes, and chases the invoice at day 3, 7, and 14 until it clears. Side-by-side, row by row, here is what plumbers actually switch for.

Designed for the one-person plumbing operationNo setup fee on the Solo plan

What solo plumbers get from Mainbrace that Rosie doesn’t

Four plumber-specific wins, one per row of the pipeline.

Rosie is a generalist AI receptionist. Mainbrace is built for the one-truck plumbing shop. Every win below comes from the same promise: from the first call to the last invoice, the system acts like a plumber — not a generic small-business bot.

  • Trade-specific photo triage — the caller’s photo classified against your prior plumbing work.

  • Plumbing-aware quote generation — regional-priced, drafted in your voice in under six minutes.

  • Day 3 / 7 / 14 invoice follow-up — an automated polite sequence that pauses the moment the bill is paid.

  • A private job-by-job knowledge base that sharpens with every closed job — owned by your shop, never pooled.

Side by side

The full feature comparison, row by row.

Every capability a solo plumber cares about, plus the three trade-offs that decide whether Rosie is enough or you need an operations stack. No hidden asterisks.

Capability
MainbraceBuilt for the solo plumber.
RosieAI receptionist for small businesses.
Trade-specific photo triageClassified against your previous plumbing work, not generic image categories.
Yes — surfaces a likely cause and a labor band.Generic image classification; no plumbing context.
Plumbing-aware quote generationEstimates priced for your region, drafted in your quote voice.
Regional-priced, sent in under six minutes.Generic text generation; humans edit every estimate.
Invoice follow-up sequenceDay 3 → 7 → 14 automated reminder cadence.
Automated day 3 / 7 / 14 cadence, pauses on payment.Basic payment reminders only — no plumbing-aware cadence.
Private job-by-job knowledge baseEvery closed job sharpens the next triage, quote, and follow-up.
Yours, scoped to your shop — sharpened with every closed job.No persistent per-job memory across calls.
Regional pricing patternsPatterns lifted out of your own closes for your zip / metro.
Surfaces from your own closes for your region.Generic market data — not your actual pricing.
Multi-shop knowledge isolationUp to five shops, each with its own private memory.
Per-shop isolation on Solo Pro and Regional.No per-shop isolation feature.
24/7 answeringInbound call coverage in your shop name, screens emergencies.
In your shop name, books into your calendar.24/7 inbound answering — Rosie’s core feature.
White-label quotes & invoicesYour logo, your voice, your parts markup.
Your logo, your voice, your parts markup.Standard Rosie branding on every artifact.

Why plumbers switch

Four reasons Rosie runs out of runway on a plumbing truck.

Generic answering is the right first step. It is not the second step. Here is what the next step actually requires — and what a plumber gets when they pick Mainbrace instead.

01
Built for plumbing, not for any small business
Rosie is a generalist receptionist that answers calls well. Mainbrace is built for the one-person plumbing shop: it speaks plumbing, classifies plumbing faults, and prices plumbing work in your regional voice.
02
Invoice follow-up you can set and forget
Day 3 / 7 / 14 cadence. The reminders pause the moment the bill clears, so a paid invoice never gets a nag email and an unpaid one never falls off the truck.
03
A knowledge base that compounds on the truck
Every closed job — call, photo, diagnosis, parts, parts markup, close rate — sharpens the next triage, the next quote, the next follow-up. The third water-heater swap is faster than the first, and stays private to your shop.
04
Your shop’s memory never leaks across shops
Solo Pro and Regional keep each shop’s knowledge isolated. One shop’s prices, triage patterns, and quote voice never leak into another shop’s workflow, even if you run the same brand in two cities.

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Ready when you are

Pick the row, then put an apprentice on the truck.

Start at $49/mo with unlimited answering, or book a setup and we’ll map your pricing and quote voice with you on the truck. Setup-fee refundable if the apprentice does not fit — no contracts.

mainbrace-10@polsia.appSetup-fee refundable if the apprentice does not fit