Most custom software projects fall between $25,000 for a focused MVP and $500,000 or more for a complex, multi-platform product, with the majority of serious builds landing somewhere in the low-to-mid six figures. The wide range isn't evasiveness, it's because "custom software" can mean anything from a single-workflow tool to an enterprise platform. This guide breaks down what actually drives the number, what you can expect to pay by project type, and how to get a real figure instead of a guess.
These are general market ranges for working with a professional, U.S.-based development firm. They're a starting point for budgeting, not a quote, your real number depends on scope.
Offshore or freelance teams can quote lower hourly rates, which can pull these numbers down, but usually at the cost of more coordination overhead, more management on your side, and more risk to timeline and quality. The cheapest quote is rarely the cheapest project once rework is counted.
Six factors move the number more than anything else:
Scope. The single biggest lever. Every feature you add multiplies design, development, and testing time. The discipline of cutting scope to what truly matters is the most effective cost control there is.
Platforms. A web app, an iOS app, and an Android app are three surfaces to design, build, and maintain. Building for one platform first and expanding later is often the smarter financial sequence.
Complexity. Simple data entry is cheap; real-time updates, complex permissions, AI features, and heavy calculations are not. Complexity compounds, because complex systems also take more to test.
Integrations. Connecting to payment processors, accounting tools, enterprise systems, or third-party APIs adds work, and each integration is a moving part that has to be maintained.
Design. A functional interface costs less than a distinctive, highly polished one. For consumer products where experience is the differentiator, design investment usually pays for itself in adoption and retention.
Compliance and security. Regulated industries (healthcare, finance) require security and compliance built in from the architecture stage, which adds cost up front but protects you from far more expensive problems later.
If you describe your idea to five firms, you'll often get five very different numbers. That's usually because each firm imagined a different scope, not because one is honest and the others aren't. A vague brief produces a vague — and risky — estimate. The quote also reflects team seniority and location, and crucially, how much discovery work has been done before quoting. A number produced after a defined scope is worth far more than one produced from a paragraph.
You don't have to commit to a full build to make real progress. A design only engagement, just the UI/UX, with no development, typically costs a small fraction of building the software, often starting around $5,000–$15,000 for a clickable Figma prototype and scaling up for complete, multi-screen product design with a design system.
Starting with a Figma prototype is one of the lowest-risk moves available to a founder. Because the prototype is interactive, you can:
In other words, design-first isn't just cheaper on its own; it makes the eventual build cheaper and more predictable, too. Many founders start here, prove the idea, and only then move into development with confidence and a clear picture of what they're building.
There are two common ways to pay for development, and the difference matters more than most buyers realize.
Hourly (time-and-materials) billing is flexible, but it shifts the risk of overruns onto you. The meter runs until the work is done, and "done" can move. It works best for genuinely open-ended or evolving work.
Fixed price gives you budget certainty — one agreed number for an agreed scope — but it depends on that scope being clearly defined first. This is why the firms that offer a true fixed price almost always define the scope through a discovery process before quoting. For most buyers building a defined product, a fixed price set after proper discovery is the lower-risk path: you commit to a known number instead of watching an hourly total climb.
At Iron Forge, this is exactly how we work — discovery produces a defined scope, and from that scope we give you a complete, fixed price for development, so you can budget with certainty before the build begins.
The fastest way to a real, reliable cost is a discovery engagement: a structured process that defines what you're building and why before anyone writes production code. Discovery typically produces a defined scope, a prioritized roadmap, technical and design direction, and a firm development price. It costs a fraction of a full build, and it's the single best way to avoid the most expensive mistake in software, building the wrong thing, or discovering hidden complexity halfway through. Treating discovery as optional to "save money" almost always costs more in the end.
Software isn't a one-time purchase. Operating systems change, devices update, app stores shift their requirements, security patches are needed, and users ask for more. A common industry rule of thumb is to budget roughly 15–20% of the build cost per year for ongoing maintenance and improvement.
Increasingly, firms offer this through flexible membership or managed-service plans rather than ad-hoc hourly work, covering monitoring, QA, app store management and approvals, customer support, infrastructure monitoring, and ongoing development. That turns an unpredictable post launch scramble into a known monthly cost, and keeps the product you invested in from quietly losing value.
You have more influence over the final number than you might think:
Want a real number for your product? A shortdiscovery engagementturns your idea into a defined scope and a complete, fixed development price, so you know exactly what your build will cost before you commit. Book a strategy call to get started.
Written by Jeremy Millian COO of Iron Forge Development, a U.S.-based software commercialization firm that has helped launch 100+ products from idea to market.
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