Web App Development
Web App Development Company
Greta is a boutique web app development company built on a simple thesis: a small team of senior engineers with AI-assisted tooling ships better software faster than a large agency with layers of coordination overhead.
Why Company Size Is the Wrong Metric — and What Actually Matters
The instinct to equate company size with capability is understandable but often wrong in software development. Large development companies have 200 engineers — and 200 engineers communicating asynchronously through tickets, daily standups, and handoff documents. The overhead of coordination scales faster than the output. A 5-person senior team with modern tooling ships more usable software per day than a 50-person team managing its own internal communication. This is not a theory — it's observable in every industry that has been disrupted by small, focused operators.
Offshore development companies offer low hourly rates, but the effective rate is often higher than it appears. Timezone gaps mean a single question takes 24 hours to get answered. Communication overhead compounds: a misunderstood requirement that a co-located team catches in 10 minutes becomes a week of wrong-direction development across timezone boundaries. The rework cost eliminates the rate advantage. We work in your timezone and reply within hours — often within minutes.
No vendor lock-in means your code is yours. Some development companies build on proprietary platforms, use internal frameworks, or structure contracts that make it expensive to leave. At Greta, we use open-source tools (Next.js, Supabase, PostgreSQL), deploy to standard infrastructure (Vercel), and transfer the repository to your GitHub organization at project end. If you outgrow us and hire an in-house team, they'll be able to read and extend the code without tribal knowledge.
Our Approach to Web app development company
Every project follows our 4-step vibe-coding process — AI handles the boilerplate, senior engineers handle the craft. From idea to live product in 3–7 days for MVPs.
Direct Access to Senior Engineers
You communicate directly with the engineers writing your code — not an account manager relaying messages. Decisions happen in one conversation, not a chain of approvals. This is the single biggest speed advantage of working with a small team.
AI-Assisted Development
We call our workflow 'vibe coding' — AI handles the scaffolding, boilerplate, and pattern repetition; senior engineers review every output, make architectural decisions, and write the business-critical logic. The result: senior-quality code at junior-time cost.
Fixed-Price Transparency
We scope every project before writing code and provide a fixed price for the defined scope. No hourly billing. No scope creep without a formal change order. You know the total cost before you commit.
Code Ownership & Clean Handover
At project end we transfer the repository to your organization, document the architecture, and provide a handover session. Your future team or contractors can pick up where we left off without any Greta-specific knowledge.
What You Get
Every web app development company engagement includes these deliverables — scoped before we start, delivered before we invoice.
- Architecture decision record explaining every major technical choice
- Full source code transferred to your GitHub organization
- Environment variables and secrets documentation
- Database schema with migrations committed to source control
- Deployment pipeline configured and documented
- Monitoring: Sentry error tracking and Vercel analytics
- API documentation (auto-generated or written, depending on complexity)
- Component library documented with usage examples
- Handover session: live walkthrough of the codebase with your team
- 30-day post-launch bug-fix warranty
Tech Stack We Use
Greta builds on a consistent, maintainable stack: Next.js 15, React 19, TypeScript strict mode, Supabase (PostgreSQL, Auth, Storage), Stripe, Tailwind CSS with shadcn/ui, and Vercel. We don't invent proprietary frameworks or use internal libraries that would require us to maintain a retainer relationship. Every dependency is open-source, well-maintained, and understood by any senior Next.js engineer.
Case Study
SEO Pilot — Delivered by a Small Senior Team in 5 Days
The founders of SEO Pilot had received quotes of $45,000 and 10 weeks from two larger development companies. Both quotes came with a discovery phase billed separately, a design phase, a development phase, a testing phase, and a 'launch support' phase — each with its own timeline. Greta ran all phases in parallel using our AI-assisted workflow and delivered a production-ready MVP in 5 business days. The founders own the code outright, the architecture is documented, and their first in-house engineer was onboarded to the codebase in a single afternoon.
Read full case studyPricing Transparency
Projects at Greta start at $5,000 for an MVP and $15,000 for a full product build. We don't charge for discovery separately, don't bill hourly, and don't add account management fees. The quote we give before the project is the invoice you receive after it.
MVP
From $5,000
3–7 business days
Full Build
From $15,000
2–4 weeks
All projects include full code ownership, two revision rounds, Vercel deployment, and one week of post-launch support. No hidden fees.
Frequently Asked Questions
How many people work at Greta Agency?
We're a boutique company — intentionally small. Every project has a dedicated lead engineer who is senior-level and experienced with the full stack. We don't assign junior engineers to client work without direct supervision.
Are you offshore?
No. We work in US/EU timezones and are available for synchronous communication during standard business hours. We've found that timezone alignment is a significant factor in project speed, particularly for decision-heavy early phases.
What happens if the lead engineer on my project leaves Greta?
Our code and architecture are documented well enough that any senior Next.js engineer can pick up the project. We also maintain internal handover notes for every active project. Client continuity is a commitment we take seriously.
Do you sign NDAs?
Yes. We sign mutual NDAs before discovery sessions and project kickoffs. Contact us at hello@greta.agency to request a standard NDA.
Can we audit the code quality before paying the final invoice?
Absolutely. We provide access to the staging environment and the GitHub repository throughout the project. You can run your own code review, run Lighthouse audits, or engage a third party to review the code before final payment.
Do you provide references from past clients?
Yes. After an initial conversation we can connect you with past clients for reference calls. We've shipped projects across SaaS, fintech, content tools, and B2B platforms.
How do I get started?
Contact us at hello@greta.agency or visit /contact. We'll schedule a 30-minute scoping call, ask the right questions, and follow up with a fixed-price proposal within 48 hours.
Ready to ship?
Work Directly With the Engineers Building Your Product
Start Your ProjectOr reach us directly at hello@greta.agency
Written by the Greta Agency team · Last updated April 2025