SaaS product development
We build SaaS products for founders and companies: multi-tenant web applications with user accounts, subscription billing, dashboards, and an admin behind them. You bring the business; we engineer the product — and unlike building on a rented platform, the result is yours.
What a SaaS build actually includes
A sellable SaaS is more than screens. Under the surface it needs tenancy — keeping every customer's data strictly separated — plus authentication, roles, subscription billing that handles upgrades and failed payments gracefully, an admin panel for your team, and usage analytics so you know what's working.
We know because we run this stack ourselves: our own contract platform and client portal are multi-tenant systems in production, with one-time-code login, per-client data isolation, and automated notifications. Your product is built on the same foundations we trust with our own business.
From idea to first paying customer
SaaS projects die from building too much before anyone pays. We scope the opposite way: a free discovery call finds the smallest product a customer would genuinely pay for, and the fixed written proposal covers exactly that — price, timeline, deliverables.
The build runs in weighted milestones you can watch in your portal, and launch is not the end: iteration after real user feedback is where a SaaS is actually won, so support and continued engineering are part of the plan, not an afterthought.
Your product, your ownership
This matters more in SaaS than anywhere else: the product IS the business. Your brand, your data and your client-facing product are yours. Buying out your product's source code is your right, set as an option in the agreement. VantyRex's backend logic and infrastructure stay ours: licensed to you to run your product, never handed over, and not included in any project price or buy-out.
That means no platform can raise your rent, cap your features, or hold your customer list. If you ever want to walk away with everything, the path is priced and in writing before we start.
What it costs and how long it takes
A SaaS product is scoped like an app build: we find the smallest version a customer would pay for and quote it in writing. Its price and timeline are fixed in that written quote, because they depend on the scope.
It starts with a 15-minute call. Within 48 hours you get a fixed written quote, and we build under a signed contract with milestones, so you see progress at each one rather than at the end.
FAQ
Do you build SaaS MVPs?
Yes — that's most of our SaaS work. We scope the smallest version a customer would pay for, fix the price and timeline in writing, and build toward first revenue rather than a feature list.
Can you take over an existing SaaS codebase?
Yes, after a code review. We'll give you an honest written assessment of what's solid, what's risky, and what it costs to continue — and we'll tell you plainly if a rebuild is cheaper than a rescue.
Is the price fixed?
Yes, once you agree to the written quote. After a 15-minute call you get one within 48 hours, with the scope, milestones and price. Anything outside that scope is quoted separately before any work.