- InputFounder describes the app
- FormatChat + constraints


Premium apps, shipped fast.
Lab Twelve is an AI-native dev studio for founders who need production-grade software without agency drag.
Describe the app. Get the scope. See the price. Ship the build.
Founder-built. Fixed price or monthly dev lane. Pause anytime.
From idea to deployed preview. One sequence.
Production-shaped software, not mockups.
Three representative builds from the gallery — each with a captured screen from our kit.

CRM Dashboard
Pipeline board, contact records, and activity timeline for a B2B founder.

Client Portal
Branded portal where clients view deliverables, invoices, and messages.

Booking System
Providers, calendars, and Stripe checkout for a niche services marketplace.
Fixed packages. No hourly math.
Larger MVPs quoted by the AI scope, usually $5k–$10k
What a dev lane is
A monthly async lane for founders who ship every week. You queue requests; we build one at a time with senior taste. Pause anytime — no retainer trap.
One active request at a time. Unlimited queue behind it.
Explore dev laneBuilt by Brian, not outsourced
Senior full-stack engineer. Every Lab Twelve build is founder-led — no account managers, no offshore handoff, no vibe-coded slop.
- Next.js
- Postgres
- Stripe
- Railway
Real founder testimonials land after first paid projects (M35).
Straight answers.
Fixed price or hourly?
Fixed price for scoped builds. You see the number before you pay. Dev lanes are a flat monthly rate — still not hourly billing.
What is included in a build?
Scoped screens, production deployment, source code, handoff docs, and a mission plan. Add-ons cover extra integrations, rush delivery, or maintenance.
How do revisions work?
Each package includes revision rounds defined in the quote. Scope changes after lock are quoted as adders — never surprise hours.
What is not a fit?
Native mobile apps, heavy compliance (HIPAA/PCI depth), or open-ended 'build whatever' without scope. We say no early.
How fast can you ship?
Launch pages in days. MVPs in two weeks. Timelines are on the quote — tied to scope, not optimism.
Who actually builds it?
Brian — founder-engineer. AI scopes and mission packs accelerate execution; judgment and taste stay human.