Time-to-market decides everything
A competitor who ships six months before you takes the market and the customers’ habits. An MVP that drags on for a year is a year of lost learning and a budget that melts away before the first sale.
B2B SaaS MVP development MVP development services
MVP development services
for Vertical B2B SaaS
We design, build and deploy your vertical B2B SaaS MVP: a real product in production, not a throwaway prototype. Delivered in 60 days. You own it.
2 spots left for July Rated 4.8 out of 5 — 11 verified reviews
QoldCall 
PrestiLeads 
PrestiLeads The stakes
The window to validate your SaaS closes fast
Hiring a tech team costs a fortune
Finding a CTO, two devs, a designer, onboarding them: six months and a huge burn before the first line that counts. The worst time to tie up that much capital.
The wrong MVP proves nothing
A prototype that doesn’t bill, without clean auth, that crashes on the first demo: it doesn’t tell you whether people would pay. A fake product doesn’t validate a real business.
What we do for you
A real SaaS product, ready to sell
Authentication & accounts
Sign-up, login, roles and permissions, multi-user by organization. The foundation of a B2B SaaS, secured from the start.
Stripe billing
Subscriptions, plans, free trials, payments and dunning. Your product collects revenue from launch — proof that your market is real.
The core product flow
The feature that justifies the customer pulling out their card: we identify it with you, build it thoroughly, and leave the rest aside.
Dashboards & reporting
The screens where your customers see their value: metrics, history, exports. The dashboard that turns a tool into a product people keep.
AI integrations
Generation, extraction, classification, agents plugged into your customers’ data. AI where it creates a real product advantage.
Deployment & handover
Product deployed, monitored, documented. We hand over the code, a runbook and training. It’s your product, your property.
Our process
From audit to deployment, in a few weeks
Audit & mapping
One week, free, no commitment. We map and quantify. You leave with a clear plan.
Two-week sprints
First system live in 14 days, behind a feature flag, instrumented. We measure, we adjust.
Handover & tuning
You own it: code, runbook, training. Optional retainer. Never stuck with us.
14 days 1st system in production
100% code ownership
SOC 2 Type II security
0 lock-in
Why FlexInAI? An AI agency of operators,
An AI agency of operators,
not consultants
We ship code, not decks
A system in production that your teams use. Not a recommendation.
First system in 14 days
You see value in two weeks and decide on something concrete.
You own everything
Code, runbook, training. You’re 100% autonomous. Optional retainer.
7 operators, one Slack
AI, front-end, full-stack, sales, design. One point of contact, execution speed.
Cross-sector visibility
We reuse what works elsewhere, so you don’t pay the learning curve.
Measurable results
Transparent pricing, free audit. We don’t bill for fuzziness.
Stack & Security
A solid stack, serious security
TLS 1.2+ · AES-256 · SOC 2 Type II · regular pen tests · VPC / on-prem deployment available
Case studies
Our SaaS MVP work
What exactly is a SaaS MVP to you?
A product in production, minimal but sellable: authentication, Stripe billing, the core product flow and the dashboards. Not a prototype or a mockup. The “minimum” is about scope, not quality. What we deliver can take a real paying customer from launch.
Why 60 days and not shorter or longer?
60 days is the time it takes to deliver a real product — not a demo — without getting lost in superfluous features. Any shorter, you sacrifice billing or robustness. Any longer, you over-build before the slightest market feedback.
How is this different from an internal business app?
An internal business app is a tool you use in-house and don’t sell. A SaaS MVP is a commercial product: designed to be sold to external customers, with multi-user accounts, billing and onboarding. Here, we build something you’re going to bring to market.
Why a vertical SaaS rather than a horizontal one?
A vertical SaaS targets a specific trade. It converts better because the prospect recognizes themselves immediately, it churns less because it embeds into a business workflow, and it holds up better against generalists. Your industry knowledge becomes your moat.
Do I own the product and the code?
Yes, entirely. The code is yours, hosted wherever you want, with a runbook and training. You can take it in-house, hire your own team or keep us on retainer. No lock-in, no forced dependency.
What happens after the 60 days?
You have a product in production, ready to sell. You can take it over on your own, or keep us on an optional retainer to evolve the product and track early customer feedback. We build what comes next based on what the market tells you.
On Zoom 2 spots left for July Rated 4.8 out of 5 — 11 reviews
Ready to take your project to the next level?
Book a 20-minute call. We scope your SaaS MVP, what to deliver in 60 days and the budget. Even if we don’t work together, you leave with a clear plan.
Book a call