Custom Web App Development

Software built around how you actually work.

Custom internal tools, client portals, white-label SaaS, and admin dashboards — built on modern, boring-reliable tech (Next.js + Postgres) and delivered as code you fully own.

  • You own the code
  • 2-week sprints, live previews
  • Fixed scopes, no hourly bills
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Your Brand Admin
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Why Go Custom

Off-the-shelf stops working the day you grow beyond it.

Generic SaaS is a great starting point. But when your workflow becomes your competitive advantage, you need software that bends around you — not the other way.

3–5 yr

lifespan of a well-built custom app before it needs a major rewrite.

Source — Industry Benchmark

total cost of ownership for off-the-shelf SaaS at scale vs. custom.

Source — Forrester TEI Study

84%

of businesses rely on at least one custom internal tool to operate.

Source — MIT Sloan Management Review

What We Build

Software that fits your business — not the other way.

From a single internal tool to a fully white-label SaaS. If it runs in a browser and solves a real problem, we can build it.

Flagship · Internal Ops

Custom Internal Tools

Admin panels, operational dashboards, and line-of-business apps built around your exact workflow — not the generic one a SaaS product has in mind. Auth, role-based access, and audit logs baked in.

  • Custom admin dashboards
  • Role-based permissions
  • Database + Postgres backend
  • Single-sign-on (SSO) ready
  • Full ownership + source code
See it in action
Portals

Client Portals

White-labeled portals where your clients log in, see project status, download files, pay invoices, and message your team — all under your brand, not a third-party's.

  • Branded client login
  • Project + file hosting
  • Messaging & notifications
  • Payment integration
See it in action
Integrations

API & Database Integrations

Connect the tools you already use — CRMs, accounting, field-service apps, IoT sensors — and move data between them with reliable, monitored pipelines.

  • REST + GraphQL APIs
  • Webhook-based sync
  • Postgres + migrations
  • Observability + alerts
See it in action
SaaS

White-Label SaaS

Productize your internal tool into a SaaS you can license to peers or franchisees — with multi-tenant architecture, Stripe billing, and usage metering built in.

  • Multi-tenant architecture
  • Stripe billing + metering
  • Team & seat management
  • Branded onboarding flow
See it in action
Dashboards

Dashboards & Admin Panels

Executive dashboards that pull data from your CRM, payments, analytics, and ops tools into one live, role-scoped view.

  • Live data sync
  • Role-based views
  • Export to PDF + CSV
  • Mobile-responsive
See it in action
Our Build Process

A predictable path from idea to production-ready.

No scope creep, no mystery-hourly-bills, no black-box status updates. Every week you see what was built and what's next.

  1. Week 1
    Step 1

    Discovery

    We map your workflow, interview the team, and define exactly what success looks like — in writing, before anyone touches code.

    Deliverable: Scoped spec + fixed bid
  2. Week 2–3
    Step 2

    Design

    Figma wireframes and high-fidelity designs you approve before any dev work starts. No surprises on look, feel, or UX.

    Deliverable: Figma + clickable prototype
  3. Week 4
    Step 3

    Prototype

    Core flows rendered as a working front-end with mock data. You click through and tell us what's wrong before we wire the backend.

    Deliverable: Live prototype URL
  4. Week 5–10
    Step 4

    Build

    Full-stack dev in 2-week sprints. Database, auth, APIs, integrations, tests. You see a deployed preview every Friday.

    Deliverable: Staging environment + tests
  5. Week 11+
    Step 5

    Launch & Support

    Production launch, monitoring setup, and either an ongoing retainer or a clean hand-off package to your in-house team.

    Deliverable: Production + docs
FAQ

Custom development, honestly.

The questions business owners ask before committing to custom software — answered without the agency doublespeak.

  • Custom wins when (1) you're paying per-user fees on 50+ seats and the math flips vs. custom, (2) your workflow is genuinely unique and off-the-shelf tools create friction every day, (3) you want to productize your internal tool as a revenue stream, or (4) you need data sovereignty. If you're a 3-person team still figuring out your workflow, buy first.

  • MVP builds typically run $15K–$45K depending on scope and integrations. Larger multi-role admin platforms with billing, auth, and custom dashboards range $60K–$150K+. We scope every project against a fixed deliverable list so there's no hourly-billing surprises.

  • MVPs ship in 6–10 weeks. Larger builds are 3–5 months. We work in 2-week sprints with live previews every Friday — so you're never surprised by where the project is or what's been built.

  • Next.js + React for the frontend, Postgres + Supabase (or Prisma) for the database, Stripe for billing, Clerk/Auth.js for auth, and Vercel for hosting. We only use modern, well-supported tools — nothing obscure that'll be hard to hire for in two years.

  • Yes, completely. Source code is delivered in your GitHub organization from day one. You can take it to another dev team anytime. We don't use proprietary frameworks or lock you into our maintenance.

  • We offer ongoing maintenance retainers (bug fixes, security patches, small enhancements) or hand-off packages where we document everything and your in-house or new dev team takes over. Either way, you're never stuck depending on us.

Have a specific idea in mind?Book a scoping call
Code illustration

Build software that bends around your team.

Book a free 45-minute scoping call. We'll pressure-test your idea, flag the riskiest assumptions, and give you a written scope with a fixed bid.

Contact Max Market Pros

Get in touch with
Max Market Pros

Send a message and a senior strategist replies within one business day.

  • Replies within one business day
  • Real strategists, not a call center
  • Based in Irvine, CA · serving the U.S.

Tell us about your business.

Free audit + 20-minute strategy call.

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Our office

Visit our Irvine office.

Max Market Pros
2600 Michelson Dr, 16th Floor
Irvine, CA 92612
Hours

Hours of operation

  • Monday8:30 AM – 3:30 PM
  • Tuesday8:30 AM – 3:30 PM
  • WednesdayToday8:30 AM – 3:30 PM
  • Thursday8:30 AM – 3:30 PM
  • Friday8:30 AM – 3:30 PM
  • SaturdayClosed
  • SundayClosed

After hours? Drop us a message and we’ll respond by 9 AM the next business day.

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Wins, behind-the-scenes builds, and quick local-marketing tips for service businesses.