01 · Understand

Tomorrow’s software, today

Abadevia builds business software and AI agents for companies. We start by understanding how you work, then build the tool to match.

Start a project

02 · Draft

We draw the plan before we write the code

Every project starts with scoping: your processes, your tools, your repetitive tasks. The plan is split into lots, with a demo at every step.

03 · Team up

One contact, the right experts

Jonathan Abadie leads every project from scoping to delivery. When needed, he brings in senior developers and designers from his network.

04 · Build

Building blocks that talk

Business software, ERP and CRM integrations, AI agents: each block is designed for your organisation, then connected to the others.

05 · Validate

Approved before release

Your team checks every feature against an acceptance checklist. We adjust, then release to production.

06 · Last

Built to last

Maintenance, monitoring, improvements: the same contact, long after delivery.

Let’s talk about your project

Services

Custom CRM, ERP and tools

Your SaaS subscriptions go up every year and your team works around the tool instead of with it. We build the CRM, ERP or internal tool that follows your processes instead. You own it: no per-user licence, your data stays yours.

What we often replaceExcel sheetsHubSpotSalesforcePipedriveSellsyAirtableNotionOnline ERPs

01No per-user licenceYou pay for the build, then a fixed maintenance fee. Hiring no longer pushes the bill up.
02You own the code and the dataSource code handed over, hosted in Europe or on your servers. No forced price rise at renewal.
03Shaped around your processesYour steps, your rules, your roles. No useless fields, no spreadsheet on the side to fill the gaps.
04AI agents built inReading emails and PDFs, follow-ups, meeting notes: repetitive tasks go to agents, people still decide.

Indicative pricing

First custom tool
from€8,000excl. VAT

€8k – 15k · first version in 6 to 8 weeks
- Client records, history, quotes and follow-ups
- Screens drawn around the way you work
- One or two user roles
- Import from your Excel files or the old tool
Request a quote
RecommendedConnected business CRM or ERP
from€15,000excl. VAT

€15k – 35k · 8 to 14 weeks, in lots
- Your steps and business rules, access by role
- Linked to invoicing, accounting and email
- AI agents wherever they save time
- Migration from HubSpot, Salesforce, Pipedrive, Sellsy…
Request a quote
Platform or client portal
from€35,000excl. VAT

quoted · schedule set during scoping
- Client area: tracking, documents, messages
- Several teams, sites or companies
- Heavy integrations and sensitive data
- Mobile app for field teams if needed
Request a quote

Maintenance15% of the price per yearFixes, security updates, monitoring and support, whatever the number of users.
Hostingfrom €150 excl. VAT / monthIn Europe, with backups. Optional: you can also host it yourself.

Improvements are quoted separately; AI model usage is billed at cost.

Your SaaS against custom, over 5 years

	Your SaaS	CustomConnected business CRM or ERP · €25,000
Setup	€3,000	€25,000
Every year	€16,200	€5,550
Total over 5 years	€84,000	€52,750

The custom tool pays for itself after 25 months.

Indicative estimate: typical price of the chosen offer, maintenance at 15% a year, SaaS with €3,000 of setup, before price rises and paid add-ons. Under five users with a standard process, an off-the-shelf tool is often enough: we’ll tell you so. We redo the maths with your own numbers during the assessment.

How it works

30-minute callFree. Show us the current tool and where it gets in the way.
Assessment and quoteYour processes, data, subscriptions and what can be connected. A plan split into lots, a price per lot.
First versionOne process first, tested on your real cases, with a demo at every step.
Migration and switch-overData moved and checked on a test environment. The old tool stays open until the switch.
Maintenance and improvementsThe same contact, long after delivery.

Common questions

Do I really own the code?

Yes. The source code, documentation and access are handed over. You can keep improving it with us or with another team.

Can we move our data without losing anything?

Yes. We export the old tool (HubSpot, Salesforce, Pipedrive, Sellsy, Excel…), clean it up, then your team checks everything on a test environment before the switch.

Can all our software be connected?

Yes, all of it. Some tools are easier than others depending on what the vendor opens up (APIs, exports, email), but every one can be linked. The assessment tells you how, and what it costs.

What recurring costs should we expect?

Maintenance (15% of the price per year), hosting if we run it (from €150 excl. VAT a month), AI model usage by volume and any third-party services (e-signature, SMS). No per-user licence.

Book a 30-minute call