Powstania Warszawskiego 15
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Mobile app cost guide · Updated July 2026
Real fixed price ranges from a Flutter agency that ships production apps every month. No "it depends," no hourly guessing games, and a free calculator so you can scope your own budget before the first call.
Starts at
$10,000
A focused first version, iOS and Android from one codebase
Most projects land at
$18,000 to $25,000
Full product with custom backend, payments and onboarding
Time to launch
8 to 20 weeks
8 to 12 for a first version, 10 to 20 for a full build
Quick answer
Almost every mobile app project we scope lands in one of these three tiers. Here is what each one actually includes.
Simple
$10,000
8 to 12 weeks
Full product
$18,000 to $25,000
10 to 20 weeks
Complex
$35,000+
20+ weeks
All three tiers are fixed price with Flutter, so iOS and Android come from one codebase. No double billing for a second platform.
Before you compare quotes
Most of the gap between two proposals is not margin. It is that each agency filled the same missing information with different assumptions. Decide these five things and the spread collapses.
01
The largest multiplier in mobile, and the one most often left implicit in a brief. Two roles is close to two applications sharing a backend. Three roles means you are building a platform.
02
Taking a card payment is cheap and solved. Splitting a payment between parties, holding funds, and handling refunds and disputes is a different category of work.
03
Reading cached data offline is straightforward. Creating records with no signal and reconciling them against a server other people also changed is genuinely hard engineering.
04
A documented REST API is routine. An on premise system with no API, or a legacy database that has to be reverse engineered, is where budgets actually expand.
05
These two numbers are not comparable. An hourly estimate is a guess with the risk on you. A fixed price is a commitment with the risk on the agency.
06
Native means two codebases, two teams, and roughly double the build and the maintenance. For most products Flutter removes that cost driver entirely.
By category
Generic tiers are a starting point. Real projects have a category, and each one carries its own typical range for a full production build, based on what we have actually scoped and shipped.
Line by line
Every quote we send breaks the app down this way, so you can trade features against budget instead of negotiating a lump sum. These are the ranges we work from.
Try it yourself
Select what you need and get an instant price preview.
This calculator gives you a rough preview to think through scope. Real projects are quoted after a discovery call where we break down every feature in detail. Our smallest fixed price engagement is $10,000.
Cost drivers
With Flutter you get iOS and Android from a single codebase. Native means two codebases, two teams, roughly double the cost.
Native: Swift and Kotlin
$50,000+
2 to 4 developers, 20 to 36 weeks. Two codebases to maintain after launch, so maintenance cost roughly doubles too.
Flutter: cross platform
$18,000 to $25,000
1 to 2 developers, 10 to 20 weeks. One codebase to maintain after launch.
Where you build
Whether outsourcing to Eastern Europe actually saves money, and whether quality holds up. The honest breakdown.
US agency rate
$120 to $200 per hour
A 250 hour project at $150 per hour is $37,500. A 500 hour project is $75,000. Rates in NYC and SF run toward the top of this range.
Eastern Europe, Poland
$35 to $55 per hour
The same 250 hour project at $45 per hour is $11,250. The same 500 hour project is $22,500. That is roughly 65 to 70% less than US rates for the same scope.
Rates track local salary markets rather than skill, which is why the same scope produces a very different invoice depending on where the team sits. The tradeoff people worry about is communication, and that is solved by overlap rather than by geography: European working hours cover the East Coast afternoon, which is enough for standups, code review, and demos to happen live.
Read before you sign
Most agencies quote development cost and stop there. These show up after you sign and after you launch, so budget for them upfront.
How we price
Every estimate we send comes from a real scoping conversation, not a form that spits out a number.
What happens next
Four steps, and you get a real figure before committing to development.
You walk us through the product and your constraints. We ask the questions that set the budget and tell you what is realistic. No pitch. If we are not the right fit we say so on this call.
We turn the idea into a written spec: user roles, screens, integrations, and what is deliberately out of scope for version one. This is where most of the budget gets decided.
One number, itemised, so you can trade features against budget before signing. The price does not move unless the scope does.
Working software at every milestone with a live demo, not a status email. Payments tied to shipped work.
Track record
FAQ
How much does it cost to build a basic MVP?
A focused MVP starts from $10,000 and takes 8 to 12 weeks. That covers up to 5 to 7 core screens, a simple backend, and basic auth with no third party integrations. What a first version actually costs depends far more on what the app does than on how many screens it has, which is why we broke it down by MVP cost by app type.
How much does it cost to build an app for both iOS and Android?
With Flutter, building for both iOS and Android costs the same as building for one platform, since one codebase runs on both. This is the main reason US startups choose Flutter over native development.
How much does it cost to hire a Flutter developer?
Senior Flutter developers in Poland charge $35 to $55 per hour versus $120 to $200 in the US. For ongoing capacity, you can hire a dedicated Flutter developer from our team at a flat monthly rate.
How long does it take to build a mobile app?
A focused MVP takes 8 to 12 weeks. A full production app takes 10 to 20 weeks. Complex enterprise apps take 20 or more weeks. Timeline and cost move together: a tighter timeline usually means a smaller scope, not faster development.
Why do two agencies quote very different prices for the same app?
Usually because they are pricing different scopes. If the brief does not fix the number of user roles, whether money moves through the app, and whether it works offline, each agency fills those gaps with its own assumptions. Hourly and fixed price quotes are also not comparable: an hourly estimate is a guess with the risk on you, a fixed price is a commitment with the risk on the agency.
Is it cheaper to outsource mobile app development to Eastern Europe?
Yes, meaningfully so. Senior Flutter developers in Poland charge $35 to $55 per hour versus $120 to $200 in the US. Eastern European teams also overlap with US East Coast hours, so communication is not the tradeoff it used to be.
How much does it cost to maintain a mobile app?
Backend hosting runs $20 to $500 per month depending on usage. Third party API fees add $0 to $2,000 per month at scale. In our fixed price model, everything agreed in the scope is covered, so if a feature stops working, fixing it is our responsibility.
Who owns the code you write?
You do, in full. Source code, repositories, and infrastructure accounts are yours from the start of the project rather than handed over at the end. We do not use proprietary frameworks that would tie the app to us.
What happens if the scope changes mid project?
We price the addition separately and you decide whether to take it now, defer it, or trade it against something already in scope. Nothing gets added silently and the original agreed price does not move on its own.
What is included in your mobile app development price?
Flutter development, code review, weekly progress updates, and deployment support. Backend development is included when scoped together. Unit testing and UI and UX design are separate unless agreed otherwise upfront.
How does fixed price app development work?
We agree on a detailed scope before signing anything. That scope drives the price. If you add features mid project, we estimate the addition before touching the contract.
Do you build mobile apps for US based companies?
Yes, the majority of our clients are US based. We overlap with East Coast working hours, communicate in English, and have direct experience with US App Store guidelines, Stripe payment processing, and data privacy requirements.
What are the hidden costs of mobile app development?
UI and UX design not included in the dev quote ($2,000 to $8,000 extra), App Store fees, backend infrastructure, third party API fees, and a 10 to 15% buffer for scope changes mid project.
Keep planning
Everything else worth reading before you commit a budget.
Tell us about your project. We will get back within 24 hours with an honest breakdown of scope, timeline, and cost. No pitch, just a real conversation.
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