What is a custom business portal?

A custom business portal is internal management software built for your exact processes. It centralises your data, automates your repetitive tasks and lets your teams work in one single place. At Rassine we build it as production-ready software, not a fragile no-code assembly.

Who is custom software and a business portal for?

It is for SMEs juggling Excel and several disconnected tools, for franchise networks that want to centralise their orders and stock, and for business owners who want to bring in-house the tasks they currently outsource or do by hand, without hiring a technical team.

How much does custom software or a business portal cost?

A business portal starts at 9 999€ for a full project delivered and put live, plus 399€ per month if you keep it managed with us (hosting, support, maintenance). A leaner SaaS MVP starts at 4 999€ managed (plus 179€ per month) or 6 999€ one-shot. We offer a free 24h diagnosis to refine the quote.

Will I be able to grow the tool later?

Of course. The portal is designed to grow with you. We add features as your needs evolve, without starting over from scratch. Updates and improvements are easy, and you stay the owner of your tool and your data.

Custom software and business portal for SMEs

What it brings you

In concrete terms, what do you gain?

Hours saved every week

We automate the manual, repetitive tasks so that you and your team can focus on what really brings in money.

No more errors or oversights

Your processes run reliably, with no re-keying or contradictory Excel files, and you take back control of your data.

A tool built for you

No generic software where you pay for features you'll never use: you get exactly what your business needs, no more, no less.

A business that can grow

Your tool absorbs growth, more customers or more users, without everything seizing up or you having to rebuild it all.

Everything is included

What we put into your project

A clear specification built together with you
A custom web application, intuitive and secure
Workspaces and access rights tailored to your teams
Connections to your existing tools (payment, invoicing, CRM)
Hosting, maintenance and ongoing improvements over time

How it works

Simple, in 3 steps

1

We scope it

We analyse your needs and your processes to define the simplest tool that genuinely solves the problem.

2

We build it

We build in stages, with regular check-ins, so you watch the tool take shape with no surprises.

3

We deploy it

We put the tool live, train your teams and refine it based on your real-world feedback.

SaaS & software pricing

Clear prices, no surprises

The full breakdown of our SaaS & software packages. You know exactly what you pay, and what you get.

SaaS MVP delivered in 6 weeks. Base: 1 business module, up to 5 screens, auth + Stripe payment. Tick the extra modules under each card to adjust the quote.

SaaS MVP · One-shot

For technical founders wanting total independence. Source code handed over, platform accounts (Netlify, Supabase, Clerk, Stripe) transferred to your name, full onboarding training. From then on you manage everything yourself.

Base6 999€full delivery · one-shot

No monthly fee with us (you manage your own infrastructure)

Clear scope included

1 business module · up to 5 screens

Clerk auth + Stripe payment integrated

Source code delivered (Git) + full documentation

2h onboarding training

6-week timeline

Standardised, proven tech stackProven standards, easy for a senior developer to pick up.
User authenticationEmail, Google, Apple. Forgotten passwords handled.
Stripe payments & subscriptionsMonthly plans, free trials, automatic invoices.
User dashboardClean, responsive interface, basic analytics.
Code & documentation deliveredYou take over, or another developer picks it up.

Post-delivery is on you. No further guarantee (security, bugs, updates, monitoring) from the moment the accounts are transferred. Recommended for technical profiles. Rassine maintenance can be activated at any time by switching to the Managed package (from 179€/month).

Modules & options

Additional business module+999€/module Got 2-3 modules to connect? Tick as many times as you have modules. Multi-tenant+799€ Several isolated organisations, different plans per client. Documented public API+599€ Your clients connect their tools via REST. Swagger documentation provided. Third-party integration+499€/integration Salesforce, HubSpot, Stripe Connect, etc. Tick once per integration needed.

With your options 6 999€

Choose this package→

Ideal for funded startups

SaaS MVP · Managed

The same MVP, but we keep the reins: hosting, monitoring, security, user support. You focus on your business.

Base4 999€build cost

then from 179€/month depending on your usage (Starter 179€ up to 1,000 users · Growth 349€ up to 10,000 · Scale 649€ beyond)

Everything in One-shot +

Scalable hosting (with us)

24/7 monitoring + automatic alerts

Daily backups (30 days)

Priority support 7 days a week (you + your users)

Hosting & scalabilityWe absorb traffic spikes, you manage nothing.
Real-time monitoringUptime, performance, errors: we see them before your customers do.
Daily backupsRestore possible up to 30 days back.
Security updatesDependencies, patches, GDPR compliance included.
Small improvements includedUp to 2h/month of functional changes.
No commitmentStop whenever you like, we transfer the code to your name.

Modules & options

Additional business module+999€/module Got 2-3 modules to connect? Tick as many times as you have modules. Multi-tenant+799€ Several isolated organisations, different plans per client. Documented public API+599€ Your clients connect their tools via REST. Swagger documentation provided. Third-party integration+499€/integration Salesforce, HubSpot, Stripe Connect, etc. Tick once per integration needed.

With your options 4 999€+ from 179€/month

Choose this package→

Custom SaaS

A complex multi-module platform: business workflow, multi-tenant, advanced roles, public API, ERP integrations. Every project is unique, we scope it together.

PriceOn quotereply within 48h

Free quote, scope defined together

For ambitious projects

Several interconnected business modules

Multi-tenant, roles, permissions

Documented public API

ERP / CRM / third-party tool integrations

Modular, standardised architectureProven standardised stack, easy for another senior developer to pick up.
Multi-tenant SaaSSeveral isolated organisations via Supabase Row Level Security, different plans.
Fine-grained roles & permissionsAdmin, manager, user, guest, etc. Managed by Clerk (SOC 2 Type II).
Public REST APIYour clients connect their tools. Swagger documentation provided.
Custom integrationsStripe Connect, HubSpot, Salesforce, ERPNext, Odoo via API.
Audit & complianceNative GDPR via SOC 2 certified platforms (Supabase, Clerk, Stripe). Regular security audits.

Request a quote→

We answer your doubts

The questions we get asked

A custom tool, isn't it too expensive?

We start with the essentials that save you time from day one, then we build on it. The time saved and the errors avoided pay back the investment quickly.

I'm not technical, will I find my way around it?

That's exactly our job: turning your business into a tool that's simple to use. We speak plainly, without jargon, and we support you at every step.

Will my data be safe?

Yes. Secure hosting, backups, controlled access and compliance: your data is protected and you keep full control of it.

Will I be able to develop the tool further later?

Of course. It's designed to grow with you. We add features as your needs evolve, without having to start over from scratch.

Our other expertise

One coordinated team for all your digital needs

Need help on several fronts? Our specialists work together on your project. You move forward with a single team, aligned from start to finish.

Showcase website A site that inspires confidence and gets you found on Google. Discover → Online store An online store that sells 24/7, with no hassle. Discover → Mobile app An iOS and Android app, in your customers' pocket. Discover → Branding A visual identity that sets you apart and reassures. Discover → SEO & acquisition A steady flow of customers who already find you. Discover → Automation We automate your repetitive tasks, on a quote basis. Discover →

Custom software and business portal: centralise and automate your SME