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Software Development Cost Calculator

Find out what custom software development is likely to cost your business before you speak to anyone. Answer five questions and a price range appears instantly, from £8,500 for a custom SaaS application.

The Application You Need

Pick the closest answer to each question. If you are between two, take the larger one. A range that turns out low would do you no favours.

Think about who will use it every day.

Count each distinct thing someone can do or see, such as a dashboard, a booking flow or an admin list.

Who signs in, and whether they see different things.

Other software your business already runs on: accounting, payments, calendars.

Bringing existing records with you into the new application.

The range updates as you answer.

Your Price Range

The One-Off Application Fee

£8,500 - £9,500

This range is an estimate from your five answers.

The range covers designing, building and testing the application and taking it live, in a Google Cloud project your company owns.

The range starts at £8,500, where our custom SaaS applications begin. If you need one platform for your website, customer records, bookings and payments, that is Valacia, and its prices are on its own page.

Your exact price comes from the Fixed-Price Specification. It costs £1,950, credited in full against the application fee if you go ahead within six months.

Get A Fixed-Price Specification

It copies your answers and the range, ready to paste.

If We Manage It

£2,400 /Year

That is Managed Service Standard, paid in advance for 12 months, with no setup fee. We host, monitor, back up and patch your application in your own Google Cloud project.

Managed Service With SLA adds a service level agreement (SLA), at £12,000 for 12 months, paid in advance.

Both are optional. Your own team can operate it instead.

Google bills your Google Cloud infrastructure to you directly, at Google's own prices.

  • Five Questions
  • Free To Use
  • No Email Address Needed

The Model

How The Ranges Are Worked Out

The same five answers always give the same range, whoever asks.

Where Our Quotations Start

The calculator and our written Quotations come from the same model. Each answer moves the range by an amount we have already committed to.

So the range on this page is the range we would start from in our reply. You just see it first.

Why The Range Is Wide

Five answers cannot capture the detail that decides a price. The range opens at fifteen per cent either side of a middle figure and widens to thirty per cent as the application grows. The Fixed-Price Specification settles the detail.

The Premium We Add For Risk

Each range includes a premium for risk, and a larger one with nine or more workflows, three or more integrations or any data migration. The calculator leans high on purpose.

A Firm Floor

No range falls below £8,500, the price our custom SaaS applications start from, even where the arithmetic lands lower. Each range is rounded to the nearest five hundred pounds, the low end down and the high end up.

Where The Calculator Stops

The largest applications receive no figure here, because their price depends on detail a form cannot capture. They go straight to the Fixed-Price Specification.

One Price For The Application

Your Quotation sets one price for the application, agreed in writing before any chargeable work on it begins. How long the work takes is our risk. That is why this page shows pounds, with no rate to multiply out.

How Each Answer Moves The Price

Type Of Application
This answer moves the price more than any other, because an internal tool for your staff and a full product your customers pay for are very different pieces of work.
Core Screens Or Workflows
Each is a screen we design, build and test, so each one adds to the price. Admin screens count too, even though only your own team sees them.
User Accounts And Roles
A single sign-in is inexpensive. Several user roles that each see different data cost more, because each rule about who sees what must be enforced on both the screen and the server.
Integrations With Other Systems
Third-party software is the part we control least. Each integration adds work we can measure and risk we cannot, and three or more bring in the larger premium.
Data Migration From An Existing System
A simple import is straightforward and adds a known amount of work. A structured migration falls outside this range and is priced separately.

What The Range Covers

The calculator prices the application itself.

In The One-Off Fee

  • Designing the application, building it and testing it.
  • Setting up the environment inside the Google Cloud project your company owns.
  • Taking it live.

Priced Separately

  • The Fixed-Price Specification, £1,950, credited in full against the application.
  • The Managed Service, if we operate it for you: Managed Service Standard at £2,400 or Managed Service With SLA at £12,000, each for 12 months, paid in advance.
  • Google's bill for the infrastructure, and any licences you buy from other companies.

Every price we quote is the full fee you pay us.

After It Goes Live

What It Costs To Run

The range above is paid once. Running the application has costs of its own too, and not all of them come from us.

If We Operate It For You

Managed Service Standard costs £2,400 for 12 months, paid in advance, with no setup fee, whatever the size of your application.

Managed Service With SLA adds response times in working hours and service credits, at £12,000 for 12 months, paid in advance.

  • Hosting And Monitoring
  • Managed Backups
  • Security Patching

We set up budget alerts in your project. Google's bill and your usage stay yours to watch.

Google Bills You Directly

Your application runs in a Google Cloud project registered to your company, on your own Google billing account. Google bills you for the infrastructure at its own prices. We add no margin. The amount depends on use, so the range above leaves it out.

Licences From Other Companies

Some applications depend on services sold by other companies, such as payment providers, messaging services or data feeds. Those companies charge you on their own terms, for as long as you use them.

The Managed Service is the only running cost we set. Google's charges rise with use, and any service you add is invoiced by the company that provides it.

Outside The Range

What This Calculator Cannot Estimate

Each of these affects the cost, and none can be captured in a multiple-choice answer. We assess each one in the Fixed-Price Specification and price it on your Quotation.

Structured Data Migration

Moving structured records out of an existing system safely is real engineering, and pricing it without seeing that system would be a guess. We look at the system itself before we put a price on the move.

Compliance Regimes

Applications in regulated fields such as healthcare and finance must be built, tested and documented differently. Five answers cannot capture that, so every regulated application begins with the Fixed-Price Specification.

Mobile Apps

An app that connects back to the same system, on iOS and Android, is priced with the rest of the application, once the detail is known. The mobile app development page explains how the two share one set of accounts and data.

Third-Party Licence Fees

These are other companies' prices, and many depend on how much you use them. The specification names each one your application needs before you commit.

FAQs

Custom Software Pricing Questions

How Much Does Custom Software Development Cost In The UK?

Our custom SaaS applications start from £8,500, with a typical range of £15,000 to £40,000. The five questions above narrow that down for your application, and the Fixed-Price Specification turns it into one price in writing.

What Is A Custom SaaS Application?

A custom SaaS application is software engineered for one business and used in a web browser. It can be an internal tool for your staff, a portal your customers sign in to, or a full product with subscriptions and billing.

We design and build each one in house, in its own Google Cloud project owned by your company.

What Does The Managed Service Fee Cover?

It pays for our team to host, monitor, patch and back up your application inside your own Google Cloud project, and for the engineering time it takes to set all of that up.

Managed Service Standard costs £2,400 for 12 months, paid in advance. For written response times, Managed Service With SLA costs £12,000 for 12 months, paid in advance.

Each fee is the same whatever the size of your application, and it can rise only after at least ninety days' written notice. Google bills the infrastructure to you separately and directly.

Do My Answers Leave My Browser?

No. Your answers stay in your browser and disappear when you close the tab. We see them only if you choose to send them to us.

When Does The Fixed-Price Specification Come First?

Nine or more workflows, three or more integrations or a structured migration need a closer look before anyone can put a price on them. The Fixed-Price Specification is that closer look. Until then, the range stands as a guide.

Can The Range Be Wrong?

Yes, in both directions. Five multiple-choice answers cannot see a workflow that turns out to be three, or an integration whose documentation is worse than anybody expected.

The Fixed-Price Specification replaces the range with one price we are bound to. If it shows the range was low, you hear it from us before you commit to anything.

What Does The Fixed-Price Specification Give Me?

You receive a written specification of what your application must do, and a Quotation with a fixed price and a date, both yours to keep. The fee is £1,950, credited in full against the application if you go ahead on that Quotation within six months.

If it does not end with a fixed price and a date, the whole fee comes back and the specification stays with you.

Who Owns The Application Once It Is Built?

Your company does, once the application fee is paid in full. The Google Cloud project it runs in, and the billing account behind it, are yours from day one.

Why Not Show A Price For Each Answer?

Because software costs do not add up like that. What an extra role or integration costs depends on everything around it, and pricing each answer would turn your application into a menu of features. You can still see which way each answer moves the total.

Do I Have To Give You My Email Address?

No. Our prices are already published, so the calculator asks for nothing in return. Answer the five questions as many times as you like, and contact us only when you are ready.

Fixed-Price Specification

Turn Your Range Into A Fixed Price

This paid first step ends in a written Quotation with one price for your application, or the fee comes back. We charge nothing for the application itself until you agree that price.

  • A Reply Within One Working Day
  • No Sales Call
  • Credited In Full If You Go Ahead