It is one of the first questions anyone asks before building an app: how much is this going to cost? The honest answer is that the range is huge, because the word "app" covers wildly different projects. A simple MVP to test an idea and a full application with its own backend, payments, geolocation and thousands of users have nothing in common — not in budget, not in timeline.
In this guide we walk through the ranges the market works with today, what actually drives the final number, the recurring cost almost nobody mentions in the first meeting, and how to work out what budget your project genuinely needs depending on the stage your business is at.
How much does it cost to build an app in 2026: real ranges
Looking at what is published in the market today, a custom app typically starts around a modest figure for the simplest tier and climbs to several tens of thousands of euros for a full project with its own backend, an admin panel and integrations. For large projects with complex logic or international scope, the number keeps climbing from there.
Most small and mid-sized businesses that come to us land somewhere in the middle: an app for iOS and Android, with its own backend, a management panel and a handful of real integrations (payments, notifications, some external system). That is the territory of a "standard" project for a company that is already running and wants to digitise a process or reach its customers on mobile.
Three tiers help you place your own project:
- MVP or proof of concept. Just enough functionality to validate whether the idea works, without polishing every detail. The fast route so you do not spend the whole budget before knowing whether anyone will actually use the app.
- Professional app for a running business. Own design, backend, admin panel, a handful of real integrations (payments, CRM, logistics). This is where most small business projects belong.
- Complex product or marketplace. Multiple user roles, payments between parties, advanced business logic, high concurrency, hardened security. This is the territory of startups that have already validated their model and are scaling.
The jump in price between tiers is not vanity: each one does more work for you, and each demands more hours of design, engineering and testing.
What really drives the price
When we put together a quote, the figure comes from several variables working together. Knowing them lets you estimate before you even book the first meeting.
Complexity and number of features
A listing with a contact form is not the same as real-time chat, geolocation, in-app payments or segmented push notifications. Every new feature means extra design, code and testing, and some — payments, real-time sync — cost noticeably more than they look on paper.
Native, hybrid or cross-platform
Choosing between native development (a separate app for iOS and another for Android) and a cross-platform framework (one codebase for both) has a direct effect on the budget: as a rule, cross-platform development ends up meaningfully cheaper than building two separate native apps, because most of the code is written once. The trade-off is that some cases — apps with heavy hardware use or very demanding performance needs — still make native worth the extra cost. If you are not sure what fits your project, we go into more detail in our article on native vs cross-platform apps.
Design and user experience
A well-thought-out interface is not a cosmetic extra: it decides whether someone opens the app again the next day. Researching how your customer actually uses their phone, designing the flows and polishing the details takes time — time that pays for itself in retention.
Backend and integrations
This is where much of a serious budget goes. A proper backend that manages users, data and business logic, plus connections to payment gateways, your CRM or management system, an ERP or external services, is work that has to be built and tested connection by connection. The more real business logic your app carries, the more this piece weighs against the visual design.
Who builds it
A freelancer, an in-house team and an agency do not cost the same, and they do not offer the same thing either. Freelance developer rates in Spain generally sit in the mid double digits per hour, with senior or highly specialised profiles above that band; an agency usually bills more per hour but brings a full team (design, backend, QA) and continuity if someone leaves mid-project. The cheapest quote gets expensive when, six months later, nobody answers the phone.
What you will pay depending on the type of app
To make it concrete, here is roughly how the budget tends to move by project type:
- MVP or very simple app (one clear function, no complex backend): the most affordable tier on the market, built to validate before investing further.
- Mid-tier app for a small business (own backend, management panel, a handful of integrations): where most businesses that already have revenue and want to digitise a process or a sales channel land.
- Complex app or marketplace (multiple roles, payments between users, high concurrency): the top tier, reserved for projects that have already validated their business model and need to scale with guarantees.
Within each tier, choosing cross-platform instead of native usually trims the budget noticeably, especially if you need to be on iOS and Android from day one.
| Type of app | What it includes | Who it fits |
|---|---|---|
| MVP or very simple app | One clear function, no complex backend. | Validating whether the idea works before investing more. |
| Mid-range app for an SME | Its own backend, an admin panel and a handful of real integrations (payments, CRM, logistics). | Businesses already trading that want to digitise a process or a sales channel. |
| Complex app or marketplace | Multiple user roles, payments between parties, high concurrency and hardened security. | Projects that have validated the model and need to scale safely. |
Within any tier, choosing cross-platform over native usually cuts the budget noticeably, especially if you need to be on iOS and Android from day one.
The cost almost nobody mentions: after launch
This is what separates an honest quote from a nasty surprise a few months in. An app is not a one-off payment: it is a living product that needs upkeep.
- Maintenance and updates. The usual industry benchmark places annual maintenance at 15% to 20% of the development cost: adapting to new iOS and Android versions, updating libraries, fixing bugs and watching security is not optional — it is what keeps the app from breaking overnight.
- App store fees and commissions. Publishing on the App Store and Google Play has a registration cost, and if you sell inside the app, the platforms take a cut of every transaction.
- Servers and infrastructure. If your app has its own backend, there is a monthly hosting cost that grows with your user base.
- Getting users. Publishing the app is not enough — you need a digital marketing plan so people download it and, more importantly, keep using it.
Tip: set aside an annual maintenance and growth budget from the start. Spend it all on development and you will own a great app that nobody updates and fewer people use every month.
| Item | What it is | Rule of thumb |
|---|---|---|
| Maintenance and updates | Keeping up with new iOS and Android versions, updating libraries, fixing bugs and watching security. | 15-20% of the build cost per year |
| App stores | App Store and Google Play developer fees, plus a commission per transaction if you sell inside the app. | Registration fee + commission |
| Servers and infrastructure | If your app has its own backend, there is a hosting bill. | Monthly, grows with your user count |
| Acquisition | Publishing the app is not enough: people have to download it and keep using it. | A separate marketing budget |
What happens when price is the only criterion
We see this pattern constantly, and it tends to play out the same way. The cheapest option wins, the app launches, and within months the symptoms appear: you cannot add a feature without rebuilding half the code, performance degrades with every OS update, nobody can explain why the server went down, and whoever built it stopped answering.
Then comes the real invoice: rebuilding it on solid foundations. And rebuilding always costs more than building it right the first time, because you have to migrate users and data, and win back the trust of people who already downloaded the app and had a bad experience.
Working out your budget by business stage
Instead of fixating on a single number, ask yourself these questions. With the answers, any serious professional can give you a realistic figure:
- Are you validating an idea or do you already have customers waiting? If you do not yet know whether people will use it, a well-scoped MVP saves you money and time.
- How many internal processes does the app need to touch? Every integration with a system you already use adds to the budget, but also removes hours you currently lose doing things by hand.
- Who is maintaining it the day after launch? With no maintenance plan, the project is unfinished even if the app works perfectly on day one.
- Will you need to scale fast? If you expect strong growth, it is worth investing a bit more now in an architecture that can take it, instead of rebuilding a year from now.
This ties into a principle we apply consistently: someone starting a business or validating an idea needs something simple, affordable and fast to launch; someone who already has revenue, established processes and needs the app to fit how they already work needs something more robust and tailor-made, even if it costs more and takes a little longer.
How we approach it at Cruslar
We always start by understanding the business, not by picking a technology. What problem the app solves, who will use it, which systems it needs to talk to, and how much it might grow over the coming years. From there we propose the simplest solution that genuinely solves it — whether that is a well-built cross-platform app or native development when the project justifies it — and we show you the maintenance cost alongside the build cost from the very first quote, so there are no surprises next year.
If your project fits a leaner mobile app development approach, we will tell you so honestly. And if you genuinely need something custom-built, we will tell you that too, with numbers on the table.
Frequently asked questions
Is it cheaper to use a no-code platform?
Up front, yes, and it can be a good way to validate a very simple idea. The limit shows up as soon as you need real business logic, specific integrations or performance those platforms cannot offer — at that point custom development pays off in the medium term.
How long does it take to build an app?
A simple MVP can be ready in a few weeks; a mid-tier app, in a few months; a complex product with several integrations can take considerably longer. The timeline almost always depends on how much real business logic needs to be built, not just the design.
Native or cross-platform to start out?
For most projects starting out, cross-platform tends to offer the best cost-to-time ratio, since it lets you be on iOS and Android from day one with a single codebase. Native makes sense when performance or access to specific phone features is critical to the product.
What is a sensible minimum budget?
One that covers development, publishing on the app stores, and at least the first year of maintenance. An app that exhausts its budget on launch day and cannot be updated is born with an expiry date.
Let's talk about your project
If you have an app idea or want to digitise a process in your business, tell us what you need to solve. We will tell you honestly which approach fits you best, what you do not need yet, and what each route costs. No obligation.
