How much custom software development costs in 2026: what drives the price, why you should buy a first release instead of a full system, running costs, and our fixed prices.
"How much does custom software cost?" has the same problem as "how much does a house cost?". The honest answer is a range so wide it is useless, unless you know what drives it. Here is what actually moves the price, how to buy software without the budget running away, and what we charge, in public.
What drives the cost of custom software
Workflows, not screens. The real unit of work is a process the software has to run: taking a booking, approving an order, issuing an invoice, tracking a job through production. Each workflow has states, rules and exceptions. Five screens around one workflow cost less than two screens that each hide a complicated one.
User roles and permissions. Software for one office manager is simpler than software where staff, managers, clients and suppliers each see and do different things. Every role multiplies the cases to design and test.
Integrations. Connecting to accounting, a CRM, payment providers, WhatsApp, an ERP or a supplier's API is where estimates go wrong most often. A well-documented API is days of work; an old system with no API can be weeks.
Data you bring along. Moving years of spreadsheets or records from an old system into a clean database takes cleaning, mapping and checking. It is often underestimated, and it is the part your team will notice first if it is done badly.
How certain the scope is. The more that is unknown when work starts, the more an hourly quote will grow, or the more buffer a fixed quote will carry. A short scoping phase that removes the unknowns is the cheapest money in the project.
Buy a first release, not a full system
The most expensive way to buy software is to specify everything you might ever need, then wait months for all of it. By the time it launches, the business has changed and half the specification is wrong.
The cheaper way is a first release: the smallest version that replaces one painful process completely. At Relax Club, a wellness club in Belgrade, the system started with 24/7 online booking and grew into client records, an online till, WhatsApp messages via Meta and personalised gift vouchers, each step used in daily work before the next one was built.
A first release has a fixed scope, a fixed price and a launch date. Everything after it is decided with real usage data instead of guesses.
Fixed price or hourly?
An hourly rate looks cheaper per hour, but every unclear requirement becomes your risk. If the estimate was 200 hours and the work takes 320, you pay for 320.
A fixed price for a written scope moves that risk to the developer, and it forces both sides to agree on what is being built before any code is written. Changes are welcome, but they are priced separately and agreed in writing. We wrote more about why in fixed-fee software: why hourly is broken.
The running costs nobody quotes
The build is not the whole bill. Budget for:
- hosting and the database, usually a modest monthly amount for a business tool,
- third-party services the software uses, such as WhatsApp messages via Meta, maps, email delivery or AI APIs, billed at cost,
- changes and updates, either per change or as a care plan,
- your team's time to learn the new tool, which is short when the software follows how they already work.
Ask every supplier who owns the code and the accounts when the project ends. If it is not you, the cheapest quote can become the most expensive one.
Build or buy?
Custom software is not always the answer. If a SaaS product fits your workflow, buy it. Build when you would otherwise bend the business around a tool, pay per-user fees for features you do not use, or keep retyping data between systems. Our guide to custom software vs off-the-shelf has a practical test for that decision.
What custom software costs at Unlockd
| What | Starting price | Time |
|---|---|---|
| Custom software, first release | from €6,900 | 3–4 weeks |
| Booking system | from €6,900 | 3–4 weeks to the first release |
| AI automation pilot | from €1,200 | per task |
| Care plan for updates and changes | from €150 per month |
Every price is a starting price, fixed after a short scoping call. Third-party costs are billed at cost, and the code is yours. The founder scopes, builds and launches every project, and we take on at most two new projects a month.
If you have a process that lives in spreadsheets, describe it in a few lines and you get a reply within 24 hours with an honest view of whether custom software is worth it, and what a first release would cover. More on how we build is on the custom software page.
Frequently asked questions
How much does custom software development cost?
Custom software development costs anything from a few thousand euros for a focused internal tool to six figures for a large platform built by a team over many months. The price depends on the number of workflows, user roles, integrations and data migration. At Unlockd a first release that replaces one core process starts at €6,900, as a fixed price for a written scope, and takes 3–4 weeks.
Why do quotes for custom software vary so much?
Quotes vary because they describe different things: a fixed scope or an open-ended hourly estimate, one workflow or a whole system, a senior developer or a team with project management on top. Compare what each quote includes in writing, who does the work, and who owns the code at the end.
Is it cheaper to pay hourly or a fixed price for software?
An hourly rate looks cheaper per hour, but the risk of every unclear requirement sits with you. A fixed price for a written scope moves that risk to the developer and forces both sides to agree what is being built before work starts. Changes are then priced separately, in writing.
What are the running costs of custom software?
After launch you pay for hosting, any third-party services the software uses (for example WhatsApp messages via Meta or AI APIs, billed at cost) and for changes. An optional care plan for updates and small changes starts at €150 per month at Unlockd. You own the code, so you can also move maintenance to another team.
How long does it take to build custom software?
A focused first release that replaces one process takes 3–4 weeks at Unlockd. Larger systems are delivered in further releases, each with its own scope, price and date, so you use the software while it grows instead of waiting months for a big launch.
