How much does it cost to build an app?

For a business web app with accounts, a few screens and a database: roughly 15,000–60,000 with an agency in Europe, less with a freelancer, and a plan plus credits with an AI builder. The spread depends on features, region and how much is already decided — which is what this calculator makes explicit.

How accurate is the estimate?

It is a planning number, not a quote. The feature breakdown is usually the useful part: it shows what drives the cost, so you can cut scope before asking anyone for a price.

What does the Chattee line mean?

A Chattee plan from 49 €/month plus an estimate of the build credits a project this size uses. The first working version typically exists within hours; the credits cover generating and refining it.

Yes. No account, no card, no watermark. Each visitor can run a tool a few times an hour; the limit exists only to keep the tools fast for everyone.

What happens to what I type?

Your input is sent to an AI model to produce the result and kept with the result for 90 days so you can come back to it. It is not used to train anything, and result links are unlisted.

Can I use the result outside Chattee?

Of course. Copy it, download it, share the link. "Build this with Chattee" is there if you want the app built, not a condition.

App Development Cost Calculator

Describe the app, get a feature breakdown and honest cost ranges for the ways you could get it built.

What should the app do? *

Include

User accounts & roles Payments Admin dashboard File uploads External integrations / API Email / notifications

Where would you hire? *

See an example:

Free, no account needed. Processed by an AI model; results are kept for 90 days.

How the estimate is made

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Features, not guesses

The AI breaks your description into 6–14 features and estimates each in developer-days, including the ones people forget: login, admin, exports.

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Rates, not vibes

Effort is priced with day rates per region for agencies, freelancers and in-house teams, plus 35% for integration, QA and project management.

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Side by side

Agency, freelancer, in-house and Chattee in one table, with the assumptions written down.

Why app estimates vary so much

The same brief gets quotes 5x apart. Three reasons, and how this calculator handles them.

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The unglamorous features

Authentication, permissions, admin screens, empty states and exports are half the work and rarely in the brief. The estimate adds them.

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Where you hire

A day of development costs 1,400 in the US and 400 offshore. Pick the region and the ranges follow.

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Overhead is real

Nobody codes eight hours a day on features. Integration, testing and coordination add a third; the estimate says so explicitly.

Questions about app costs

How much does it cost to build an app?

For a business web app with accounts, a few screens and a database: roughly 15,000–60,000 with an agency in Europe, less with a freelancer, and a plan plus credits with an AI builder. The spread depends on features, region and how much is already decided — which is what this calculator makes explicit.
How accurate is the estimate?

It is a planning number, not a quote. The feature breakdown is usually the useful part: it shows what drives the cost, so you can cut scope before asking anyone for a price.
What does the Chattee line mean?

A Chattee plan from 49 €/month plus an estimate of the build credits a project this size uses. The first working version typically exists within hours; the credits cover generating and refining it.
Is it really free?

Yes. No account, no card, no watermark. Each visitor can run a tool a few times an hour; the limit exists only to keep the tools fast for everyone.
What happens to what I type?

Your input is sent to an AI model to produce the result and kept with the result for 90 days so you can come back to it. It is not used to train anything, and result links are unlisted.
Can I use the result outside Chattee?

Of course. Copy it, download it, share the link. "Build this with Chattee" is there if you want the app built, not a condition.

Build it for a fraction of the quote

Describe the app in Chattee and get a working version — database, accounts, screens — instead of a proposal. Planning is free.

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