Giulo Création

Service 07 / 08

App development

Building a mobile app turns a repeated action of your clients — booking, ordering, tracking — into a tool they keep in their pocket. iOS and Android, from a real business need, not a trend.

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Why

An app isn’t a smaller website: it’s a shortcut to an action your clients repeat. Booking a slot, ordering again, tracking a case — if that use exists in your business, an app makes it simpler, faster, and settles you durably on your clients’ home screen.

Conversely, an app with no repeated use dies in three weeks: downloaded, opened twice, forgotten. That’s why Giulo Création starts with the awkward question — “what will your clients do again every week?” — and advises against the app if the answer is vague.

When the need is real, the method secures the budget: clickable mockups approved before any development, versions delivered continuously, guided publication on the App Store and Google Play, and usage measured from launch.

8 sem
target lead time for an MVP — a working first-user version, ready to iterate.
3
core stacks — Next.js, Supabase, React Native. Chosen to fit the need.
100%
proprietary code, delivered to your git repository. You leave with it — no renting.
The 4 pillars of mobile app development by Giulo Création: business need first, validated mockups, iterative builds, measured usage

Deliverables

From product framing to deployment, with short one-to-two-week sprints to iterate fast.

  1. Business scopingThe core use, the users, the essential features — and those we won’t do in V1. The scope is written, the budget too.
  2. Clickable UX/UI mockupsYou test the app with your finger before a single line of code exists. Fixes here cost ten times less than in development.
  3. iOS and Android developmentVersions delivered regularly, testable on your phone. You follow progress in real conditions, not on a schedule.
  4. Testing and QACritical paths verified, edge cases handled, performance checked before publication. An app that crashes can’t be caught up in the reviews.
  5. Publication on the storesApp Store and Google Play listings, visuals, compliance, submission and review tracking. You go live cleanly, under your account.
  6. Post-launch monitoringAdoption, retention, reviews and crashes, tracked from day one. V2 evolutions come from usage figures, not assumptions.

Method

The Giulo Method

  1. 01

    Diagnosis

    The repeated use, the users, the existing tech. If the app isn’t the right tool, you’ll know before paying for development.

  2. 02

    ROI prioritisation

    A V1 focused on the core use: every added feature must justify itself by expected usage.

  3. 03

    Delivery

    Mockups, testable versions, store publication: concrete milestones, on your phone.

  4. 04

    Measurement

    Downloads, retention, reviews. The V2 roadmap is decided on these figures.

Proof

Mobile app · iOS & Android In use

4 to Play padel

Mobile app dedicated to padel, built for iOS and Android.

Learn more →

Frequently asked questions

How is this different from a website?
A website presents. An application does. Sign-ups, user data, business logic, payments, real time.

Do I need an MVP before investing?
Almost always, yes. Framing the strict testable minimum in eight weeks avoids pointless development.

Native or web app?
Depends on the needs. A web app for most internal B2B cases. React Native if you need sensors or push notifications.

Do you also handle hosting?
Yes, or I advise based on your existing infrastructure. Vercel, Supabase, AWS, OVH — a transparent, documented choice.

What do I keep after delivery?
Source code on your git repository, technical documentation, access to all services, onboarding training.

How much does a mobile app cost?
It all depends on scope: a booking app has neither the complexity nor the budget of a marketplace. Giulo Création prices after scoping, with a V1 scope written down in black and white — it’s the scoping that protects your budget, not a teaser price.

iOS, Android, or both?
Both, in almost all cases: your clients have both. Cross-platform development delivers both stores from a single codebase, without doubling the budget.

How long to develop an app?
Generally count two to four months between scoping and publication, depending on scope. Mockups approved upfront avoid the back-and-forth that derails schedules.

Native app or web app (PWA)?
If your clients must keep it in their pocket and receive notifications, an app on the stores is the way. If the use is occasional, a web app is often enough — and costs less. The diagnosis decides, not the trend.

Who owns the app and the code?
You do. Store accounts in your name, code delivered and documented. No lock-in: if our collaboration ends, your app keeps living.

Thirty minutes, no jargon.

A free, no-commitment audit: what’s working, what’s leaking, and an action plan ranked by ROI. Reply within 24 hours.

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