PaintBid — React Native Estimating & Invoicing for Painting Pros
Viktor Zahurskyi
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Posted Jan 14, 2026
Create fast, accurate estimates and branded PDF quotes, track leads/jobs, convert to work orders and invoices, and accept payments—right from your phone.
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Timeline
Feb 2, 2024 - Jun 25, 2024
Overview
PaintBid is a cross‑platform mobile app built for painting contractors to create fast, accurate estimates, convert them into branded quotes/work orders, and manage the full job lifecycle from lead to invoice—all on phone or desktop.
Key Features
Quick Estimates: Enter rooms/surfaces, dimensions, coats, prep tasks; auto‑calculates labor and materials.
Cost Models: Configurable production rates (sq ft/hr), crew sizes, wages, overhead, and margins.
Material Database: Paint/primer/consumables with coverage, waste factors, and price tiers.
Branded PDFs: One‑click quote/estimate/work order PDFs with logo, scope, terms, and e‑signature.
Lead & Job Tracking: Pipeline stages (Lead → Quote → Won → Scheduled → Complete), reminders, and notes.
Invoicing & Payments: Generate invoices from approved quotes; optional card/ACH via Stripe.
Client CRM: Contacts, site addresses, job history, attachments, and change orders.
Multi‑Device: Mobile‑first with synced web/desktop support; offline capture and later sync.
Team Access: Roles/permissions for owners, estimators, and crew leads; activity logs.
Photos & Markups: Attach site photos, annotate surfaces, and include in PDFs.
Tech Stack
Mobile/Web: React Native (TypeScript), React Navigation, React Native Web for desktop browser support.
State/Data: Zustand/Redux + React Query; optimistic updates; offline queue with background sync.
Forms/Calculators: Reusable form schemas (Zod/Yup) and cost engine with unit conversions and rounding rules.
Storage: Secure local persistence for drafts; cloud DB (e.g., Postgres/Firebase) with row‑level security.
PDFs: Server‑side PDF rendering (Node/puppeteer or pdf-lib) with brand themes and locale/units (imperial/metric).
Files: S3/Cloud Storage for photos/attachments; presigned uploads.
Auth: Email/password + OAuth; role‑based access; device session management.
Notifications: Push (FCM/APNs) and email for quote approvals, schedule changes, and payment receipts.
Payments: Stripe (PaymentIntents/Invoices), tax handling, discounts, deposits, and partial payments.
CI/CD & Quality: Jest/RTL, Detox e2e, Fastlane, Over‑the‑Air updates (Expo EAS/CodePush), Sentry/Crashlytics.
Estimating Workflow
Scope Intake: Add rooms/surfaces (walls, ceilings, trim, doors), dimensions, conditions, and prep.
Cost Build: Pick materials; engine computes coverage, waste, cans/units, labor hours from production rates.
Price & Margin: Apply labor rates, overhead, profit; preview cost breakdown and sensitivity.
Quote Generation: Auto‑produce branded PDF with scope, exclusions, timeline, and terms; send via email/SMS.
Approval & Scheduling: Client e‑signs; convert to job, assign crew, generate work order.
Execution & Change Orders: Log time/material variances; issue change orders and update totals.
Invoice & Payment: Create invoice, accept card/ACH, and record partial/final payments.
Challenges & Solutions
Accurate Calculations Across Edge Cases:
Solution: Unit tests for coverage, coats, waste; per‑surface production rates; rounding to purchase units.
Offline Job Sites:
Solution: Offline‑first store with conflict resolution and retry; queued PDF/email send when online.
Branded Documents at Scale:
Solution: Themed PDF renderer with reusable blocks (scope tables, photos, signatures) and caching.
Multi‑Role Permissions:
Solution: Role‑based policy on API; per‑record access and audit trails for edits/approvals.
Payment Reconciliation:
Solution: Webhooks update invoice states; deposits, progress billing, and final payment flows.
Results
10–15 minutes to produce a polished quote from a site visit.
Higher win rates via professional PDFs and faster follow‑ups.
Fewer back‑office hours due to integrated estimates → work orders → invoices pipeline.
