Field service software / Contractor CRMQuoteIQ: a contractor CRM in Flutter, Nuxt and Firebase
A CRM for home service contractors: quotes, scheduling, invoices and payments, customer messaging and AI automations, on iOS, Android and the web. On the App Store since September 2022, with 3,400+ ratings and a 4.7 average.
Our role: Client project. App369 founder Simon Dziak was lead developer from August 2022, before the App Store launch, until September 2026. QuoteIQ LLC owns the product and publishes the app.
The problem
What QuoteIQ Needed to Solve
Home service contractors (pressure washing, HVAC, plumbing, landscaping, roofing, cleaning and other trades) lose time and money to messy scheduling, slow invoicing and lost leads. Pricing a job, booking it, invoicing it, taking the payment and following up often happens on a phone between jobs.
The build
How We Built It
Simon led development from before the first App Store release in September 2022 through September 2026, building through App369. A Flutter app covers iOS and Android, and a Nuxt web app covers the desktop. Firebase runs the backend, with the server logic in Cloud Functions. Stripe handles payments, including tap to pay, so a contractor can take a card at the job. Twilio carries SMS and voice for customer messaging.
Features
What the Product Does
From the App Store listing today. This is the product as it is now, not a list of what Simon built.
Clients and leads
Customers, leads and jobs in one place, with the communication history, job notes and follow-ups on the client record.
Estimates and invoices
Estimates and invoices from the phone or a desktop, with discounts and deposits. Customers view, approve and pay online.
Payments
Card payments through Stripe, including tap to pay for taking a card in person.
Scheduling
Jobs on a calendar, assigned to the team, with recurring appointments. A job is scheduled straight from the quote.
InstaQuote and InstaSchedule
A self-service quote form for the contractor's own website, and a booking page that shows real availability.
Customer messaging
Texting from inside the app, with reminders and follow-ups saved to the client record.
Automations and AI
Text and email automations that run when an estimate is created, scheduled or declined, or an invoice is paid, and an AI estimator that suggests pricing.
Inspection forms
Custom checklists with photos to record a property's condition before the job.
Client portal
One place where customers view estimates, approve quotes and pay invoices.
Screens
The App on iPhone
Screenshots from the QuoteIQ App Store listing.
Architecture
The Stack, Layer by Layer
- Mobile app
- Flutter, for iOS and Android.
- Web app
- Nuxt, so the business can run from a desktop as well as the phone.
- Backend
- Firebase, with the server logic in Cloud Functions.
- Payments
- Stripe, including tap to pay for in-person card payments.
- Messaging
- Twilio for SMS and voice.
By the numbers
Verifiable Facts
Release date and ratings from the public App Store listing on October 30, 2026.
Technologies Used
- Flutter
- Dart
- Nuxt
- Firebase
- Cloud Functions
- Stripe
- Twilio
Timeline
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