How much does it cost to build a custom app? What drives the price

The honest answer to “how much does an app cost?” is “it depends”, but it doesn’t depend on just anything. Almost all of the price comes from a simple sum: how many days of work are needed, multiplied by the cost of each day. What changes from one quote to another is how many days your project needs. These are the six factors that weigh the most.

1. Scope: which features you need

This is the main factor. User sign-up is little work; a payment system, real-time chat or a marketplace with commissions are a lot more. Each feature has its own complexity, and the sum of all of them is the basis of the quote. That is why it pays to separate the essentials from the nice-to-haves before asking for a price.

2. Platform: web, mobile or both

A web application is the cheapest to build and maintain. A mobile app published in the stores adds packaging work, testing on devices and Apple’s and Google’s review. Building web and mobile at the same time costs less than two separate projects if they share a codebase, but more than either one on its own. An internal tool for your team is usually simpler than a product for the public, because the look matters less and you know the users.

3. Design: standard, custom or premium

A standard design starts from proven components adapted to your brand. A custom design means more design and iteration time. A premium one (animations, a carefully crafted identity) raises the cost because every screen is polished in detail. If the product is an internal tool, standard design is usually more than enough.

4. How many users and how much load

An app for dozens of users doesn’t need the same as one for tens of thousands. The larger the scale, the more work on performance, security and monitoring, and the more infrastructure after launch.

5. Integrations

Connecting to your ERP, your CRM, a payment gateway or an e-signature service adds work, and sometimes more than it seems: it depends on how well the other system is documented. List them from the start, because they are one of the most common causes of overruns.

6. What comes after launch

An application isn’t finished when it goes live: it has to be hosted, backed up, patched for security and have its bugs fixed. That monthly cost changes with the size of the app and the level of service you need (response in office hours or round-the-clock cover). Always ask for it together with the build quote, and look at the cost of the whole first year, not just development.

Examples priced with our system

These amounts come from the same estimator our assistant uses, with today’s rates. They are a guide to the order of magnitude, not a quote: yours depends on what you ask for.

How to adjust the budget without losing what matters

• Start with an essential version: the minimum that already delivers value. Leave the rest for a second phase, once you have seen how your customers use it.
• Use a standard design if the product is internal or still unproven.
• Reuse existing services (payments, authentication, email) instead of building them from scratch.
• Ask for a clickable prototype before committing: it is the cheapest way to find out something doesn’t fit.
• Be wary of very low prices without a defined scope: they are usually made up for with extras or cuts in quality.

Fixed price versus hourly

A fixed price sets the scope and the amount: you know what you will pay before work starts, and anything you want to add is quoted separately. Paying by the hour is more flexible, but it shifts the risk of overruns onto you. For a project with a clear scope, a fixed price is usually more comfortable. All amounts exclude VAT.