How much does it cost to build an app in the US?
For a US-based development team in 2026, a focused MVP on one platform runs $55,000 to $110,000. A production app on iOS and Android with a custom backend, admin tooling and real integrations runs $180,000 to $450,000. A regulated or enterprise platform — healthcare with HIPAA, fintech with a ledger and KYC, or multi-tenant SaaS with SOC 2 — runs $500,000 to $1.5 million. The single biggest driver is not the feature count; it is how many client surfaces you build and how much compliance and integration work the product carries.
Why is this calculator more expensive than others I have seen?
Because it quotes US rates and says so. Our per-discipline rates run from $98 an hour for QA to $180 for architecture, which blends to roughly $125 to $155 depending on your work mix. Many published calculators quote 2,000 hours at $30 to $50 an hour, which is an offshore rate card presented without saying so — the same 2,000 hours, priced very differently. We show you the hours separately from the rate so you can compare like with like.
Does adding a second platform double the cost?
No, and any calculator that doubles it is wrong. The backend, database, APIs, business logic, product definition and design system are built once and reused. Adding Android to an iOS build adds roughly 70% of one client implementation — typically 20% to 30% of total project cost, not 100%. Choosing React Native or Flutter instead collapses both apps into one codebase for about a quarter more than a single native app.
How long does it take to build an app?
An MVP is typically 2 to 4 months. A production app on two platforms is 6 to 9 months. A regulated or enterprise platform is 10 to 16 months. Those figures assume phases overlap — design starts before discovery ends, and QA runs alongside development. Adding people does not compress a schedule proportionally: team size grows with roughly the square root of the work, because coordination cost rises with every person added.
What makes healthcare and fintech apps cost more?
Compliance engineering that produces no user-visible feature. HIPAA means audit logging, access control, key management, retention policy and the evidence to prove all of it — typically 15% to 25% of a healthcare build. Fintech adds a double-entry ledger that must reconcile exactly, KYC and sanctions screening, and fraud controls. On top of that, both verticals integrate with systems you do not control: an EHR interface or a core banking platform is $80,000 to $200,000 of work gated by the other side’s review queue rather than your engineering speed.
Do I need to give you my email to see the estimate?
No. The complete estimate — cost range, timeline, engineering hours, itemised breakdown, cost drivers, recommended team, running costs and annual maintenance — appears immediately and stays on a shareable link. If you later want a fixed-scope proposal against finalised requirements you can contact us, but nothing on the result page is gated.
What is not included in the development estimate?
Cloud hosting and metered vendor bills, which we report separately because they scale with usage rather than being a one-off — typically $110 to $28,000 a month depending on traffic and feature mix. Also excluded: annual maintenance at 15% to 28% of build cost, external compliance assessor fees ($4,000 to $600,000 depending on the regime), app store developer accounts, content production, marketing, and hardware.
How accurate is a calculator estimate?
This is a planning range, and the page tells you its own confidence — roughly ±14% on a well-specified standard build, widening to ±22% on an MVP where scope is still moving. A calculator cannot know your existing systems, your data quality, how fast your stakeholders make decisions, or what your security reviewers will ask for. Use it to size a budget and sanity-check a vendor quote, then get a fixed-scope proposal against written requirements before you commit.
Should I build an MVP first?
Usually, yes. An MVP typically costs 40% to 45% of the full build and reaches real users months earlier. Most teams discover a third of their planned scope was not needed, which means the MVP funds the next phase with evidence instead of opinion. The important distinction: an MVP is a smaller project with phase-two scope genuinely removed, not a discount on the same one. This calculator models it that way — at MVP level, features marked phase-two are dropped from the estimate rather than discounted.
What does app maintenance cost per year?
Between 15% and 28% of the original build cost annually, and the calculator derives your figure rather than assuming one. The floor is 15%: defect fixes, OS and browser compatibility releases, dependency patching and monitoring. It rises with each app store you ship through, each third-party integration that changes on somebody else’s schedule, and materially with a regulated security posture, which needs continuous evidence rather than an annual push.