Powstania Warszawskiego 15
31-539 Kraków
Hourly billing made sense when scoping software was genuinely hard to do upfront. It is not anymore. We scope the project with you, put one number in writing, and build to that number. If the scope does not change, neither does the price, and if the build runs long on our side, that is our cost to absorb.
30 minutes with the founder. No preparation needed.
Fixed price app development means one price for a written scope, agreed before any code is written and paid in milestones tied to working software. Apps Value, a Flutter and React Native development company in Kraków, Poland, works this way with startups, bootstrapped founders with limited runway and established businesses in the United States and Europe. Anything inside the agreed scope that does not work is fixed at no extra cost, and new features are priced separately before work on them starts. Delivery closes with a signed acceptance protocol.
Why the price does not move
Fixed price app development means the scope is written down first and one number covers it. The supplier carries the estimation risk instead of the client. It fits a defined product with a real deadline, and it does not fit open ended research work.
Under an hourly contract, every unclear requirement, every slow week and every "can we also add" lands on your invoice. You find out the real cost of the project at the end, which is exactly when you can do least about it. The supplier carries none of the risk of a vague specification, because the meter simply runs longer.
A fixed price reverses that. If we scope badly, we absorb the difference. That is uncomfortable, and it is why most agencies avoid the model. It only works if the scoping happens properly before anything is signed, which is why our process starts with a written document rather than a number.
The trade is straightforward. You give up the freedom to change your mind constantly. We give up the ability to bill our way out of a mistake. For a defined product with a real deadline, that is a good trade for both sides. For open ended research work, it is not, and we say so on the call.
A scoping call turned into a written document: screens, flows, integrations, and the business rules that decide whether the thing works.
A single quote covering the whole scope, plus a timeline. Nothing added later without your signoff, and nothing folded in quietly.
If the build takes longer than we planned, that is our cost, not yours. That is the actual point of the model rather than a marketing line.
There is no incentive on our side to stretch hours. The incentive is to ship the agreed scope well, because that is what closes the contract.
Defect or change request
A defect is anything described in the agreed scope that does not work, and fixing it carries no cost. A change request is work that was not in the scope document. It gets its own price and its own effect on the date, agreed in writing before anyone builds it.
Plenty of suppliers say fixed price and then bill for anything inconvenient by calling it a change. The line has to be written down before the work starts, because arguing about it afterwards is what turns a project sour.
Every change request gets its own number and its own timeline impact, agreed in writing before anyone touches the code. How typical requests are classified in practice, and what a proper change request should contain, is covered in our guide to change requests in a fixed price app project.
If you are comparing offers right now, our guide to the fixed price app development contract sets out the four clauses that decide whether a quote holds: scope written with counts, a written acceptance list, the warranty on the agreed scope, and the route a change takes.
What the fixed price covers
The price covers the scope document, the full build on iOS and Android, the backend, testing on real devices, store submission, a signed acceptance protocol and a clean handover of code and credentials. Store fees, paid third party services and work after launch are quoted separately.
Screens, features, backend needs and integrations, documented before you sign anything.
Flutter or React Native, whichever fits the project.
NestJS or Supabase backends, authentication and business logic inside the scope.
Live demos every two weeks, so you see working software instead of a status email.
End to end testing on real devices before anything goes to a store.
App Store and Google Play submission, certificates and provisioning included.
Delivery closes with a signed document, so what counts as done is agreed rather than argued.
Code, credentials and infrastructure are yours, whether you continue with us or not.
Not included: features requested after signoff, third party costs such as store fees and paid APIs, and ongoing work after launch. Each of those is quoted separately.
Because one team builds the apps, the backend and the launch, the price covers the whole product rather than one slice of it. What that model includes is set out in end to end app development, and if you plan to bring the product in house later, MVP codebase handover covers what the handover package should contain.
What it costs
The number follows the shape of the product rather than a price list. A narrow first release, a full cross platform product and an operational system sit in three different bands. Current ranges and what moves them are kept in one place, on the pricing page.
A narrow first release built around a single flow, with the rare cases handled manually at first. Usually 8 to 12 weeks.
A complete cross platform product with a backend, accounts, payments or scheduling, and an admin view for your team.
Marketplaces, field service systems and products that integrate with what you already run. Longer scoping, longer build.
Ranges for each of these sit on the pricing page, and the full breakdown of what drives the number is on our mobile app development cost page.
If you already know roughly what version one has to do, send it over and we will come back with a written scope and a fixed price.
Send your scope by emailWhen to walk away
Fixed price is wrong when there is no scope to fix it against: pure research work, a product whose direction changes weekly by design, or an organisation without one person who can approve decisions. In those cases an hourly arrangement or a dedicated team serves you better.
This page exists to sell a way of working, so it is worth being clear about where it does not fit. If any of these describe your situation, we will say so on the call rather than after the contract.
How it works
Five stages: a 30 minute scoping call, a written scope document, a fixed quote and contract with acceptance criteria, two week sprints with live demos, then store submission and a signed acceptance protocol. Code, credentials and infrastructure transfer to you at the end.
You walk us through the operation or the product and the constraints around it. We ask what usually goes wrong in products like yours and tell you what is realistic. No pricing at this stage.
The conversation becomes a document: screens, flows, backend needs, integrations, and the business rules that decide whether people actually use the thing. You see exactly what you would be buying.
One number for the whole scope, with a timeline, the acceptance criteria, and the defect versus change request definition written into the contract rather than left to good faith.
We build against the document with a live demo every two weeks. Your own team uses the app on real work during this stage, which is when the requirements that could not have been written down show up.
Store submission, then a signed acceptance protocol closing delivery. Code, credentials and infrastructure transfer to you. On larger contracts the one year warranty starts here.
Your side of it
One person who can decide within a day, developer accounts opened in the kickoff week, credentials for any third party service the app connects to, and your own team testing on real work during the build rather than the week before launch.
Delays on fixed price projects are rarely engineering delays. They come from the client side, and they are predictable enough to plan around, so we would rather name them before the contract than explain them afterwards.
Built this way
Every project below was scoped, quoted and delivered on a fixed price contract.
A technician app where the work timer had to keep counting with the screen locked and during a call placed from inside the app. That requirement only appeared once crews used it on real jobs.
MarketplaceA two sided marketplace built in Flutter and Supabase, with the matching logic, the payment flow and the App Store review questions that come with any marketplace product.
BookingA booking and training product where trainers ran real sessions with their own clients before public launch, which is the point where a schedule stops being a set of screens.
From the founder
"A business needs a predictable outcome. You want to know exactly what you are paying for and what you get on the other end of that spend. That is why we work fixed price, and why the scoping call happens before any number does."
Why the number holds
Saying fixed price is easy. These are the parts that decide whether the number survives contact with the project.
The scoping call is run by the people accountable for the number, not by an account manager who passes it on.
The quote is a document with acceptance criteria, not a verbal estimate. What you sign is what you pay.
If the idea is too large for the budget, you hear it before you pay, together with what a smaller first version would look like.
Two week sprints with live demos, so you are watching the build rather than reading about it.
Written scope, acceptance protocol, warranty terms. The same shape of paperwork as buying a machine or a fit out.
Code, credentials and infrastructure transfer at handover, whichever way the relationship goes afterwards.
About the source
FAQ
The answers we give on the phone, written down so you can compare them with what other suppliers tell you.
Read before you buy
Written for people about to commission a build, not for developers.
Related services
Fixed price applies across everything we build. Here is the rest of it.
Cross platform apps for iOS and Android from a single codebase.
A React Native team built for US founders and scaling companies.
From idea to App Store in 8 to 12 weeks, fixed price.
Scheduling, job reporting and offline work for operational teams.
Two sided products, matching logic and payment flows.
Nearshore delivery for clients in the US and Western Europe.
Describe how the work runs today and what it costs you. You get a straight answer on what belongs in version one, what it would take, and a written scope with a fixed price before anything is built.
30 minutes, no preparation needed.