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Pricing

Flat prices. Clear scope. No hourly surprises.

Pick the tier that matches your stage. Timelines are estimates for our two-person studio. One active build at a time.

Scope locked on Day 1

You get a one-page spec and fixed price before we write code. If scope or timing needs to change, we agree in writing first. We do not publish refund promises. We publish what is in scope.

Entry tier

Proof Sprint

$599

10 days · 1 core flow · up to 5 screens · demo data · no auth

Validate your idea with a clickable demo. This is not production software.

Start a Proof Sprint

Founder MVP

$1,199

2 weeks

A real product slice you can click through in two weeks, not a deck.

Flat. You pay 50% up front and 50% on delivery.

Includes

  • 60-min scoping call on Day 1
  • Working, hosted MVP at the end of week 2
  • Auth and a real database
  • 1 integration (Stripe, email, or CRM)
  • Source code and configs handed to you
  • 1 revision round during the build
  • Twice-weekly Loom updates

Not included

  • Production hardening (evals, monitoring, multi-tenant)
  • More than 1 integration
  • Ongoing changes after handover
Start a Founder MVP
Recommended

System

$2,999

6 weeks

The smallest production version your first paying customers can use.

Flat. Milestone-based. You pay 30% / 40% / 30%.

Includes

  • Everything in Founder MVP
  • Auth, roles, and multi-tenant where you need it
  • Evals, tracing, and basic monitoring
  • Deployment and infra setup on your accounts
  • Up to three integrations (CRM, payments, telephony, etc.)
  • Documentation and a handover session for your team
  • Two weeks of bug-fix support after launch

Not included

  • New feature work after launch (that is Custom)
  • 24/7 SLA support
Start a system

Custom

Contact us

Ongoing

Extra features and iteration after your System is live.

Ongoing work after your System ships. Fixed builds cap at $2,999.

Includes

  • Everything in System
  • Continuous feature work
  • Model fine-tuning and re-training
  • Eval and regression suites
  • Priority response and weekly reviews
  • Direct Slack or WhatsApp channel with us
Talk about Custom

Enterprise

Contact us

Scope beyond a single System tier. We phase work or trim on Day 1.

Complex platforms scoped in phases. Maximum fixed price is $2,999 per build.

  • Dedicated scoping and architecture review for your org
  • Legacy integrations and compliance-oriented patterns
  • Multi-region or multi-tenant platform work
  • Security review and audit trail requirements
  • Phased delivery with written change orders
Discuss Enterprise

Post-launch

Maintenance Retainer

$399/mo

Month-to-month. Cancel anytime. Limited slots.

Keep your System running after launch with updates, patches, and small fixes.

  • Dependency and security updates
  • Bug fixes for features we shipped
  • Minor UI tweaks (up to ~3 hrs/mo)
  • Monitoring check-ins and uptime alerts
  • Model and prompt tuning when AI is in scope
Add after your System ships

Add-ons

Extend any tier without renegotiating the whole engagement.

  • Extra integration

    CRM, payments, telephony, or custom API. We scope and quote before we build.

    $650 each

  • Discovery sprint

    Paid scoping session. We credit 100% toward your build if you proceed within 30 days.

    $650

  • AI Readiness Audit

    We review your document pipeline, draft an eval plan, and recommend build vs buy for RAG or agents.

    $1,200

  • Support extension

    Two extra weeks of post-launch bug-fix support on Founder MVP or System.

    $249

  • Handoff workshop

    90-minute session so your team can operate, deploy, and extend the codebase.

    $450/session

Fine print

  • Prices in USD for global clients.
  • We do not bill hourly. Scope is locked on Day 1. Any additions get a separate change order.
  • Maximum fixed-price build is $2,999 (System tier).
  • Timelines are estimates for a two-person studio with one active build at a time.
  • You own everything we ship: code, prompts, weights, and evals.
  • Infra bills to your account directly. We never mark it up.

Compare tiers

What you get at each tier

Hard scope caps keep deadlines honest. We run one active build at a time.

FeatureProof SprintFounder MVPSystemCustom
Timeline10 days2 weeks6 weeksOngoing
Price (USD)$599$1,199$2,999Contact
Screens / flowsUp to 5Up to 8Full productContinuous
Authentication✓ + roles
Real database
Integrations1Up to 3Unlimited*
Production monitoring
Post-launch support2 weeksIncluded

* Additional integrations scoped as add-ons.

Testimonials

What clients say

We went from WhatsApp orders and three spreadsheets to one app in five weeks. The prototype proved the idea. The system is what we run the business on now.

Operations lead · The Fuel Depot

Bill processing went from hours to minutes. The review UI for low-confidence OCR extractions is what made the data trustworthy enough to bill on.

Practice manager · Skanda Billing

I had a Notion doc and a landing page. Two weeks later I had auth, Stripe, and a dashboard I could show investors. No agency deck. Just working software.

Solo founder · TaskFlow (SaaS MVP)

FAQ

Pricing questions, answered.

What's the difference between Proof Sprint and Founder MVP?

Proof Sprint ($599, 10 days) is a clickable demo with demo data. Founder MVP ($1,199, 2 weeks) is a real product slice with auth, a database, and one integration. Production-ready work starts at System.

Why are timelines longer than a one-person sprint shop?

We are two people with one active build at a time. Both of us stay on your project. Timelines on this page are our honest estimates, not guarantees.

Do you offer payment plans?

Yes. Proof Sprint and Founder MVP are 50/50. System is 30/40/30 across milestones. Ongoing work is quoted separately.

What about refunds?

We do not advertise refund guarantees. Scope and price are fixed on Day 1 in writing. If we miss a agreed milestone, we discuss remedies case by case in the contract.

Do you work with global founders?

Yes. We are remote-first and English-first. You pay in USD by milestone via invoice or Stripe.

What if my project is bigger than System?

Maximum fixed price is $2,999. We trim scope on Day 1 or split into phased builds.

Ready to pick a tier?

Run the 90-second intake or email us — we scope it, price it, and start building.

Flat-Rate Software Pricing | KatalyzU