Business
How Much Does Custom Software Development Cost? What Drives the Price
Quotes for the same project can differ tenfold. The reasons are scope, risk and how the work is priced, and you can control more of them than you think.
By Prolificrew Engineering · · 4 min read
In this article
“How much will it cost?” is the first question on every software project and the one that is hardest to answer from a short description. We will not quote a number without understanding the project, and neither should any serious development partner. What we can do is explain what moves the price, so you can scope your project sensibly and compare quotes fairly.
The seven biggest cost drivers
- Scope and number of features. Every feature has design, build, testing and maintenance cost. The cheapest feature is the one you leave out of version one.
- Platforms. Web only, web plus iOS and Android, or desktop as well. Shared codebases reduce this multiplier but do not remove it.
- Integrations. Payments, CRMs, accounting, identity providers and legacy systems are rarely as simple as their documentation suggests. Each one adds testing and edge cases.
- User roles and permissions. A single user type is simple. Organisations, teams, roles, approval flows and audit logs multiply the work.
- Design depth. A clean interface built on a standard component library costs less than a fully bespoke visual identity with custom animation.
- Data and compliance. Handling health, financial or children’s data brings security reviews, encryption, auditing and legal requirements.
- Quality bar and scale. Automated tests, monitoring, performance tuning, accessibility and the ability to handle spikes in traffic all take time. They are what makes software dependable, so be wary of quotes that leave them out.
Three common pricing models
| Model | How it works | Good when | Watch out for |
|---|---|---|---|
| Fixed price | Agreed scope for an agreed price | Requirements are clear and unlikely to change | Change requests, and a temptation to cut corners to protect margin |
| Time and materials | You pay for the time spent, usually with a cap or budget guide | Requirements will evolve as you learn | Needs trust and good reporting; budget can drift without milestones |
| Dedicated team or retainer | A team works on your product for a set monthly fee | Long-running product with continuous work | You must keep the backlog full so the capacity is used well |
Many projects blend these: a fixed-price discovery phase to define the scope, followed by time and materials or a fixed price per milestone for the build. This reduces the risk on both sides, because the biggest unknowns are resolved before the large budget is committed.
Why a discovery phase saves money
A short discovery phase (clarifying users, flows, data, integrations and risks, and producing a prioritised backlog with estimates) is the single best way to improve the accuracy of a budget. It surfaces the expensive surprises early, such as an integration that turns out to be unavailable, while changing course is still cheap. It also gives you a document you can use to compare vendors on equal terms.
Costs people forget
- Maintenance. Software needs security updates, dependency upgrades, bug fixes and operating-system compatibility work after launch. Plan an ongoing annual budget that is a meaningful fraction of the build cost, not zero.
- Hosting and services. Cloud infrastructure, databases, email, SMS, maps and AI usage are recurring costs that scale with usage.
- App store and licence fees. Developer accounts, certificates and third-party licences.
- Content and data migration. Moving existing data into a new system is often a project of its own.
- Internal time. Your own team’s time for feedback, testing and decisions is real cost, and delays there delay everything.
How to reduce cost without reducing quality
- Build a smaller first version. Test the riskiest assumption with the least software. See our MVP development approach.
- Use proven building blocks. Authentication, payments and email are solved problems; buy or integrate them instead of building them.
- Choose one platform first, or a shared codebase, then expand when you have users.
- Make decisions quickly and provide feedback in batches. Waiting is the cheapest cost to remove.
- Write down the ‘must have’ versus ‘nice to have’ list and agree it with your team before talking to vendors.
Questions to ask any development partner
- Who will actually write the code, and will they be on my project throughout?
- How do you handle changes in scope, and how are they priced?
- What do I own at the end, and where will the code live during the project?
- How do you test, and how will I see progress every week?
- What does support look like after launch, and what does it cost?
- Can I speak to a previous client, or see something you have shipped?
Red flags in quotes
- A price with no written scope or assumptions.
- A figure that is dramatically lower than every other quote. Something has been left out, usually testing, security or the parts you will need later.
- No mention of maintenance or what happens after launch.
- Pressure to sign before you have seen how the team works.
To get a realistic budget range for your project, tell us what you are building. We will ask the questions above in reverse, and give you a scoped plan with a range and the assumptions behind it, not a number plucked from the air.