Our unique method

Our method
in 3 pillars

From first exchange to delivery: a transparent process where you stay in control.

Mockup validated
Fixed price 2 450€

How a project goes wrong

1

Approximate estimate

You explain your need, the provider estimates development time...

2

Blind development

No mockup, just hope that it matches...

3

Additional costs

Misunderstood features lead to additional costs...

Budget exceeded, frustration

The project exceeds forecasts and doesn't match your initial vision.

3 pillars for zero surprises

You see your app before you pay

We transform your idea into complete visual mockups with all screens. You visualize exactly what you'll get.

  • Mockups shown in meetings
  • Real-time adjustments
  • Quote adapts automatically

Each component has a fixed price

Button, form, page, feature — everything has a creation and modification cost defined in our catalog. Build your app à la carte.

  • Fixed price for creation + modification
  • 100% predictable quote
  • Pay only for what you want
Page Dashboard 450€
Formulaire contact 180€
Notifications push 320€

Pay at your pace with your project

Your app costs €10,000 over 5 months? You pay €2,000/month. We make projects accessible even with a limited budget.

  • Schedule adapted to your cash flow
  • No hidden fees or interest
  • Projects accessible now
Mois 1
2 000€
Mois 2
2 000€
Mois 3
2 000€
Mois 4
2 000€
Mois 5
2 000€ Delivery
Project total 10 000€

What makes us different

Criteria
Traditional agencies
EPREYN
Visualization before payment
Fixed prices per component
Flexible payment
Client / Agency equity

Everything about our method

We show you the mockups in detail during our meetings, but we don't send them by email. Why? To protect our design work and your investment in the process. This prevents a competitor from copying our work or mockups being shared without context. You can see them, comment on them, request adjustments — in full transparency.

That's planned! Each component in our catalog has a creation price and a modification price. If you want to change an element after validation, you know the exact cost in advance. No "it depends" or negotiation — it's transparent and predictable.

Imagine an à la carte menu: each element of your application (screen, button, form, feature...) has a fixed price in our catalog. During mockup creation, we identify all necessary components. The quote = the sum of these components. You can add or remove elements, and the price adjusts automatically.

No, there are no additional fees or interest. Flexible payment is a service we offer to make projects accessible. €10,000 over 5 months = €2,000/month, period. The schedule is defined together based on your cash flow and project duration.

It depends on complexity, but a typical project lasts between 2 and 6 months. The mockup phase usually takes 2-4 weeks, then development follows the pace of validations. The advantage of our method: you have a clear view of the timeline once the mockup is validated.

Ready to see your app
before you pay?

Book a call for a first exchange with no commitment.

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