Services › Custom tools & web apps
Custom tools & web apps

Your processes, your constraints: we build the tool you need.

Custom CRM, turnkey web apps, follow-ups, dashboards, integrations between your software: we analyse how you really work, then build exactly what you need. Quote within 48h.

Talk to a co-founderSee the results
Reply within 30 minutesNo commitmentZero outsourcing
Lead received at 21:14:02
  1. 1Meta form received
  2. 2Record created in the CRM
  3. 3WhatsApp sent to the lead
  4. 4Appointment confirmed
  5. 5Team notified on Slack
#new-appointmentsClaire · visit Thursday 12:30 pm
MMaison Arlo
Hi Claire 👋 Thanks for your request. Could an advisor come by Tuesday at 6 pm or Thursday at 12:30 pm?
Thursday 12:30 pm works 👍
Got it, see you Thursday!
Response time: 9 s
The problem

Off-the-shelf tools don’t fit

🧩No software does it allYou juggle three tools that don’t talk to each other, and information gets lost between them.
📋Everything ends up in spreadsheetsLeads, files, orders: tracking relies on spreadsheets and the team’s memory.
🔁Your team is copy-pastingHours every week spent copying, chasing and reporting by hand.
Our method

From need to tool

AnalysisWe look at how you work, your constraints and what’s costing you time or customers.
Plan and quote within 48hYou get the tool’s blueprint and its price, no surprises.
Custom buildWe build what you need: CRM, automations, portal, dashboard, connections to your software.
Onboarding and follow-upWe train your team, make sure everything runs and evolve the tool with you.
Results

What we can build for you

Client filesAxia Patrimoine
New
Karim B.Life insurance
Élise M.Retirement
Appt. booked
Paul D.Thursday 10am
Signed
Anne R.€80k investment
Fictional example
Custom CRMYour steps, your fields, your statuses: not those of off-the-shelf software.
Today’s ordersLumen
Order #2481 · invoice sentfait
Low stock on 30 ml serum · supplier notifiedauto
Customer review requested on day 7fait
Late parcel · customer reassured by SMSauto
Fictional example
AutomationsInvoices, stock, follow-ups, reviews: repetitive tasks run on their own.
DashboardMaison Arlo
42quotes this month
9 sresponse time
31%signed
Fictional example
DashboardsThe numbers that matter to you, updated in real time.

And everything else: client portal, appointment booking, automatic quotes, WhatsApp follow-ups, integration with your business software… If you can describe it, we can build it.

The service

What you get, in practice

Perseus Agency builds custom tools for businesses: CRM, turnkey web apps, automations (email, SMS and WhatsApp follow-ups) and dashboards connected to your existing software. Each tool is built around your processes by Lorenzo, co-founder, with a detailed quote within 48h.

What’s included

  • Analysis of your processes and constraints
  • Plan and detailed quote within 48h
  • Custom-built tool or web app
  • Integration with your existing software
  • Automatic email, SMS and WhatsApp follow-ups
  • Team training, follow-up and improvements

Add if needed

Lorenzo Mechin, co-founder of Perseus Agency
Lorenzo builds your toolsHead of AI & Architecture · co-founder

He analyzes your constraints, builds the tool end to end and stays your point of contact as it evolves.

Web apps

A custom web app, turnkey

When your processes don’t fit any software, we build yours: a complete web app that automates your business end to end.

  • Built around your processes, not the other way round
  • Works on desktop, tablet and phone
  • Hosted, maintained and updated by us
  • Your data stays yours
Custom quote
app.axia-renov.fr
Hello JulieFictional example
12jobs in progress
8quotes to follow up
94%invoices paid
Kitchen renovation · Martinin progress
Bathroom · Duboisquote sent
Extension · Leroyscheduled
Questions

The questions we get asked

Do you build complete web apps?

Yes: client portal, field app, back office… a turnkey app, hosted and maintained, that automates your processes end to end.

Can you build what I need?

Yes. We start from your constraints and the way you work, not from off-the-shelf software. On the call, we’ll tell you how we’d build it.

How much does it cost?

Every tool is custom: you receive a detailed quote within 48h of the call.

Do we have to drop our current tools?

No: we can connect to them or replace them, whichever gains you the most.

Do I own the tool?

Yes, it’s built for you and your data stays yours.

And if it needs to evolve?

We evolve the tool with you as your needs change.

Who handles my project?

Lorenzo, co-founder. Zero outsourcing.

What if we looked at your needs?

30 minutes with a co-founder: we tell you what we would change, even if you don’t work with us.

Talk to a co-founder
Contact

Let’s talk about your project.

Book 30 minutes with a co-founder. We prepare the call by looking at your ads and your website beforehand.

Lorenzo or KhelilCo-founders · not a salesperson
  • 1
    We look at your numbersAds, website, lead tracking: what works and what costs too much.
  • 2
    We tell you what we’d changeConcrete actions, even if you don’t work with us.
  • 3
    Quote within 48hIf we move forward together, you get a clear proposal.
30-minute video callNo commitmentZero outsourcing
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