SaaS MVP & web app development
SaaS MVP development that gets your product in front of real users
Zevnotix Digital is a UK SaaS MVP development company for founders in the UK and US who need a working product, not a slide deck. We build web apps, SaaS MVPs, client portals and admin dashboards — with authentication, payments and the admin tooling you need to run it. Book a free scoping call: we'll help you cut the idea down to the one valuable thing version one must do, and give you a fixed-scope quote to build it.
- Fixed scope and quote before work starts
- Weekly updates and demos
- You own the code, content and accounts
Who this is for
- Non-technical founders with a validated problem who need a first version real users can log into.
- Founders who have outgrown no-code tools and need something they own.
- Businesses running operations on spreadsheets that need a portal or internal tool.
- Startups preparing to raise who need a product investors can click through.
What our SaaS MVP development includes
Scoping before code
A scoping session that turns your idea into one end-to-end user journey and a deliberate list of what waits for version two.
Authentication and accounts
Sign-up, login, password reset, teams and role-based access, built on proven libraries rather than reinvented.
Payments and subscriptions
Stripe integration for one-off payments, subscriptions, trials and invoices where your model needs them.
The core product
The one workflow your users pay for, designed to be understood without a manual.
Admin dashboard
An admin view for users, data, payments and support, because you are the first operator of your product.
Analytics and iteration
Event tracking on the actions that matter, so the next build decision comes from evidence.
How an MVP project runs
- 1
Scope
We map users, the core journey and the riskiest assumption, then agree a fixed scope in writing.
- 2
Design the flows
Clickable flows for the core journey, reviewed before development starts.
- 3
Build in weekly increments
Working software every week on a preview link, with a plain-English update.
- 4
Launch to real users
Production deployment, monitoring and onboarding of your first users.
- 5
Iterate
Use what users actually do to decide the next feature, not a roadmap written before launch.
Technology we build MVPs with
- Next.js
- React
- TypeScript
- Node.js
- PostgreSQL
- Stripe
- Authentication & role-based access
- Multi-tenant data model
- REST & webhook integrations
- AI & LLM features
- Vercel / AWS
How much does it cost to build a SaaS MVP?
We quote a fixed price after scoping, once the core journey and the list of what is out of scope are written down. That written scope is what protects your budget: it stops a three-month MVP becoming a nine-month one.
The biggest cost drivers are the number of user roles, the integrations, and whether payments are involved. The cheapest MVP is the one with the fewest features that still proves people will use and pay for it — we'll push you towards that.
What affects the price
- Number of user roles (e.g. customer, provider, admin)
- Payments, subscriptions and invoicing
- Third-party integrations and data imports
- Real-time features (chat, notifications, live updates)
- AI features and their data requirements
SaaS MVP & Web App Development: questions, answered
Who owns the code and IP?
You do. You own the code, content and accounts we create, which matters when investors run due diligence or you later hire your own team.
Should I build a website, a web app or an MVP first?
It depends on where your bottleneck is. If you need leads, start with a website; if the product is the business, start with an MVP. Our guide on choosing between them walks through the decision.
Can you take over an existing codebase or no-code build?
Often, yes. We review it first and tell you honestly whether to extend it or rebuild the core, with the reasoning written down.
What happens if something goes wrong?
Scope, price and milestones are agreed in writing before any work starts, so there is a fixed reference point if anything drifts. You get weekly progress updates and demos in plain English, which means problems surface in days rather than at the deadline. You own the code, content and accounts we create, so you are never locked in, and ongoing support can be included after launch.
Do you work with clients outside London and the UK?
Yes. We are based in London and work remotely with businesses across the UK, the US and internationally. Calls are scheduled to suit your time zone, and all project communication is written down so nothing depends on being in the same room.
Guides for founders
Related services
- Custom CRM Development
Custom pipelines, templated proposals and automated follow-up, built around how you sell.
- Mobile App Development
iOS and Android apps for startups and service businesses, with the admin side included.
- AI & Business Automation
Lead handling, quotes, CRM workflows and admin, automated with workflows and AI.
Let’s talk
Ready to build something serious?
Tell us what you want to build. We’ll help you turn it into a clear, premium, and scalable digital experience.
- Direct access to the people who build
- Weekly progress updates in plain English
- You own everything we create