Web App Development
Web App Development Services
From the first Figma frame to production deployment and post-launch support, Greta handles every phase. No freelancer puzzle, no agency bloat — a focused team that ships and stays accountable.
Why One-Stop-Shop Beats the Patchwork Alternative
The traditional model — hire a designer, then a frontend freelancer, then a backend developer, then a DevOps contractor — sounds flexible on paper. In practice it creates three sets of assumptions that never quite align, three billing conversations that don't end, and a codebase where everyone assumed someone else would handle the edge cases. When the app breaks in production, accountability diffuses. Nobody owns the whole thing.
Large agencies solve the coordination problem by adding project managers, account managers, and a layer of process that insulates you from the engineers actually writing code. The result is a six-month timeline, a five-figure monthly retainer, and a kick-off meeting where the person presenting the wireframes has never deployed a Next.js application. We work differently: the engineers who scope the project are the engineers who build it.
Our service model covers discovery (requirements, architecture decisions, database design), design (responsive UI, component library), build (full stack implementation), launch (staging, production, monitoring setup), and ongoing support (bug fixes, feature additions, infrastructure). We treat post-launch as a service, not an afterthought — because the relationship that generates the most value for you starts after the first deployment.
Our Approach to Web app development services
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.
Discovery & Scoping
We spend time understanding your users, your business model, and your constraints before writing a line of code. The output is a fixed-price proposal with a defined scope, timeline, and acceptance criteria — so both sides know what 'done' means.
Design & Architecture
Responsive UI in Figma, a component inventory, and a technical architecture document before build begins. Design and architecture decisions are made in parallel to eliminate the handoff delay between 'design complete' and 'build starts'.
Build & QA
Full stack implementation with daily builds deployed to a staging environment. You can review real, working software every day — not screenshots of designs. QA runs against the acceptance criteria defined in scoping.
Launch & Support
Production deployment with monitoring, error tracking, and a post-launch support window. We don't disappear after launch — we offer retainer support for teams who want ongoing development, bug fixes, or infrastructure management.
What You Get
Every web app development services engagement includes these deliverables — scoped before we start, delivered before we invoice.
- Discovery document: user stories, data model, and technical architecture
- Figma designs: all screens, responsive breakpoints, component inventory
- Full stack implementation: database, API, UI, and deployment pipeline
- Staging environment for daily review throughout the build
- Production deployment on Vercel with custom domain and SSL
- Monitoring setup: Sentry error tracking, Vercel analytics
- Stripe payment integration (if applicable)
- Auth system: email/password, OAuth, or SSO
- Post-launch support window (2 weeks included)
- Source code handover with documentation and architecture notes
Tech Stack We Use
Every Greta project runs on the same proven stack: Next.js 15, React 19, TypeScript, Supabase (PostgreSQL, Auth, Storage, Realtime), Stripe for payments, Tailwind CSS with shadcn/ui, and Vercel for deployment. This stack is opinionated by design — we've shipped dozens of projects on it, know its failure modes, and can move fast because we're not re-evaluating architectural choices on every engagement.
Case Study
FinTrack — End-to-End Service Engagement
FinTrack came to Greta with a Figma file, a list of requirements, and a hard deadline tied to a demo for a seed round investor. They needed a discovery session to pressure-test the requirements, a design pass to catch UX gaps before build, a full stack implementation, and a production launch — all within three weeks. We ran discovery and design in parallel with early infrastructure setup, started building core screens on day 3, and had a staging environment running by day 7. The production launch happened on day 19 — four days ahead of the investor demo. Post-launch we caught and fixed two edge-case bugs during the support window before the demo.
Read full case studyPricing Transparency
Web app development services start at $5,000 for an MVP engagement (discovery, design, build, and launch). Full product builds with ongoing support retainers run $15,000+. All projects are fixed-price with scope locked at the discovery phase. No hourly billing, no scope creep surprises — what we quote is what you pay.
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
What is included in the discovery phase?
Discovery produces a scope document with user stories, data model diagrams, API contract outlines, and a technical architecture decision record. It typically takes 1-2 days and is billed as part of the project, not separately.
Do you do design, or just development?
We do both. Our design work is functional and component-driven — Figma designs that map directly to the React component structure we'll build. We don't produce design deliverables that get thrown over a wall to a separate development team.
How is working with Greta different from hiring a freelancer?
A freelancer has no backup if they get sick, has a narrower skill set (usually frontend or backend, not both), and has no accountability mechanism after the project ends. Greta is a team — if the primary engineer on your project is unavailable, the project doesn't stop.
How is working with Greta different from a large agency?
Large agencies have account managers, project managers, and layers of process between you and the engineers. At Greta you talk directly to the engineers building your product. That means faster decisions, no telephone game, and a team that actually understands your product requirements.
What does post-launch support include?
The included 2-week support window covers bug fixes for issues discovered after launch. Extended support retainers cover ongoing feature development, infrastructure management, dependency updates, and priority bug fixes on a monthly basis.
Can you work with our in-house design team?
Yes. If you have an internal designer, we'll build from their Figma files. We'll do a brief component audit to ensure the designs map to our component structure, flag anything that needs clarification, and proceed to build.
What is the payment schedule?
We typically split projects 50% upfront and 50% on final delivery. For larger engagements we use milestone-based payments tied to the staging delivery and production launch. Contact us at hello@greta.agency to discuss.
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Written by the Greta Agency team · Last updated April 2025