How we estimate mobile app development cost
appcost.us is a free cost calculator for teams planning a mobile app in the United States. This page is the model behind it — every multiplier, every dollar adder, and every thing it deliberately leaves out.
Why this exists
“How much does an app cost?” is the first question every team asks and the one the industry answers worst. The honest answer — somewhere between $12,000 and $900,000 — is useless, and the confident answer is usually a sales call in disguise.
So we built the thing we wanted: a calculator that asks the seven questions that actually move a mobile budget, itemises where the number came from, and publishes the model so you can argue with the parts you disagree with. There are 15 category and platform guides alongside it, each priced by the same engine, so a guide can never quote a figure the calculator contradicts.
Four principles
Itemised, not a single vague number
The estimate arrives as a breakdown you can argue with — every line, the timeline, the drivers and the recommended approach. We ask for your details on the last step so we can send you a copy and reply about the project.
The model is published
Every multiplier and dollar adder used to produce your estimate is listed on this page and in /llms.txt. You can check our arithmetic, and disagree with it in specifics rather than in general.
A range, not a false precision
Software estimates are wrong by nature; the useful question is by how much and in which direction. We publish a range, we say which way it skews, and we separate the model’s calculated value from the estimate around it.
US dollars, US market
One currency and one market, so the assumptions behind the rates stay coherent. Blended US delivery rates, US app store economics, US compliance expectations.
The model, in order
The model is built in engineering hours, and money appears only at the end, when those hours are billed at $50 per hour. Your answers enter the calculation in one of four ways: as a multiplier on the effort, as a fixed block of hours, as infrastructure work, or as a scaling uplift. In sequence:
- A complexity baseline in hours, covering the design, front-end and back-end scaffolding a build of that ambition needs.
- Multiplied by the app category, the platform and the design level, then split 18% design, 42% front end, 40% back end.
- Plus each selected feature, at its own fully loaded effort, scaled by complexity and platform.
- Plus backend architecture and any add-ons, as fixed blocks.
- Plus an infrastructure block sized to expected traffic.
- Plus QA at 10% and project management at 8% of everything above them.
- Every line then multiplied by the traffic uplift, rounded to the nearest 5 hours, and billed at $50 per hour. The sum is the calculated value.
- The published estimated range is that value at 85% and 122%.
Because the estimate is assembled from itemised lines rather than worked backwards from a total, the breakdown chart on your results page adds up to the calculated value exactly. That is a property of the code, not a coincidence. The same holds for effort: every line’s hours multiplied by the rate give that line’s cost, and the hours total gives the estimate.
Complexity baselines
| Level | Baseline effort | What it means |
|---|---|---|
| Simple | 230 hrs | A focused app, a handful of screens |
| Medium | 475 hrs | A real product with accounts and a back end |
| Complex | 950 hrs | Multi-role, real-time, integration-heavy |
| Advanced / Enterprise | 1,790 hrs | Mission-critical, regulated or very large scale |
Platform multipliers
| Platform | Multiplier | Note |
|---|---|---|
| iOS only | ×1 | One native Swift app for iPhone |
| Android only | ×1 | One native Kotlin app |
| Cross-platform | ×1.18 | React Native or Flutter — both stores, one codebase |
| Both iOS & Android (native) | ×1.5 | Two native codebases, built in parallel |
App category multipliers
Domain complexity: how much more engineering a category normally carries than a plain content app, before any feature is chosen. Regulated and multi-sided categories sit highest.
| Category | Multiplier | Note |
|---|---|---|
| E-commerce | ×1.15 | Catalog, cart, checkout, orders |
| Healthcare | ×1.3 | Care, records, regulated patient data |
| Social media | ×1.2 | Feeds, profiles, follows, sharing |
| Food delivery | ×1.25 | Menus, live orders, courier tracking |
| Fitness & wellness | ×1 | Workouts, tracking, wearables |
| Education & e-learning | ×1.05 | Courses, lessons, progress, quizzes |
| Finance & FinTech | ×1.35 | Accounts, transfers, KYC, ledgers |
| Travel & hospitality | ×1.15 | Search, availability, bookings |
| Marketplace | ×1.25 | Two-sided supply, payouts, trust |
| Entertainment & streaming | ×1.1 | Catalog, playback, recommendations |
| On-demand services | ×1.25 | Match a request to a live provider |
| Logistics & fleet | ×1.3 | Dispatch, routing, proof of delivery |
| Real estate | ×1.1 | Listings, media, tours, enquiries |
| Productivity & SaaS | ×0.95 | Tasks, docs, teams, sync |
| Something else | ×1 | Priced as a general-purpose app |
Design multipliers
| Level | Multiplier | Note |
|---|---|---|
| Basic UI | ×0.92 | Platform components, minimal custom work |
| Professional UI/UX | ×1 | A designed product on a design system |
| Custom UI/UX | ×1.12 | Bespoke visual language, custom motion |
| Premium experience | ×1.28 | Research-led, highly crafted, animated |
Expected traffic
Volume does not change what the app does, so it does not scale the whole build. It buys a fixed block of infrastructure, load and security work, plus a small uplift on everything else to cover the extra care each layer needs under real load.
| Expected users / month | Infrastructure | Uplift |
|---|---|---|
| Under 1,000 users / month | 0 hrs | ×1 |
| 1,000 – 10,000 users / month | 40 hrs | ×1.02 |
| 10,000 – 50,000 users / month | 95 hrs | ×1.05 |
| 50,000 – 100,000 users / month | 160 hrs | ×1.08 |
| 100,000 – 500,000 users / month | 275 hrs | ×1.12 |
| 500,000+ users / month | 440 hrs | ×1.18 |
| Enterprise / mission-critical | 715 hrs | ×1.25 |
Features and back end
Features range from 25 hrs to 230 hrs and are fully loaded — design, front end, back end and the feature’s own tests — quoted at medium complexity on a single platform. Backend architecture is priced separately so nothing is counted twice.
| Architecture | Effort | Note |
|---|---|---|
| Managed backend (BaaS) | 0 hrs | Firebase or Supabase — no custom server |
| Basic custom backend | 75 hrs | One service, one database, REST endpoints |
| Custom backend & API | 170 hrs | Documented API, roles, background jobs |
| Enterprise architecture | 420 hrs | Services, event bus, SSO, audit trail |
The full feature and add-on price list is published in /llms.txt, along with the formula above.
Where the numbers come from
The rates behind the model reflect blended US delivery — a mix of onshore leadership and distributed engineering, which is how most American app projects are actually staffed in 2026. They are calibrated against delivered project data, published US market rate surveys and the ranges reputable US agencies quote publicly.
They are not the cheapest number available. An offshore-only team will quote below this model, and a top-tier US product studio will quote above it. If you already have a partner, the useful use of this tool is as a second opinion on the shape of their quote — whether the split between design, engineering, QA and management looks sane — rather than as a price to negotiate against.
What the estimate excludes
- Content production
- Photography, video, copywriting, illustration and course or catalog content.
- Third-party licences
- Map, search, identity, messaging, streaming and AI vendor fees, which are per-use and grow with adoption.
- Ongoing cloud costs
- Hosting, bandwidth, storage and database spend after launch. The estimate covers building the infrastructure, not running it.
- App store fees
- Apple’s $99 per year developer programme and Google Play’s one-time $25 fee, plus store commission on digital sales.
- Marketing and acquisition
- Launch, paid acquisition and app store optimisation. Frequently larger than the build for consumer products.
- Post-launch maintenance
- OS updates, dependency upgrades, bug fixes and small improvements. Budget 15–20% of build cost per year.
Estimated versus calculated
The results page prints both, on purpose. The calculated value is the raw output of the model from your answers — the figure the itemised breakdown adds up to. The estimated range is that figure with real-world variance applied, and it is deliberately asymmetric, because software projects overrun more often than they come in under.
Neither is a quotation. A quotation requires discovery: your existing systems, the integrations that turn out to be harder than advertised, your deadline, and the requirements that only surface in conversation. Treat the range as a budgeting figure and a way to sanity-check proposals.
Who publishes this
appcost.us is published by Taction Software Solutions (Taction Software LLC), a software engineering company that builds mobile applications, backend platforms and cloud architecture for US businesses. Building these systems is how we have the delivery data the model is calibrated against.
That is also the commercial interest behind a free tool, and it is better stated than implied: if your estimate looks workable, we would like to be the team you talk to. The calculator does not need you to. It is complete, it is free, and it does not ask for an email address to produce a number.
Questions about the model, or a figure you think is wrong? Email info@tactionsoft.com — corrections that come with reasoning get applied.