Supervention
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Software development

Custom software, built around how your business works.

Web apps, SaaS products, mobile apps, games and APIs, built by senior engineers. Before any work starts you get a written proposal like the one on the right. It costs nothing until you agree.

Good for

  • Businesses outgrowing spreadsheets
  • Startups launching a product
  • Companies stuck with old software
Discuss your projectChoose what you are building
  • Most apps take 6 to 16 weeks.
  • A working demo every week while we build.
ExampleA written proposal, line by line

Example written proposal for a booking app for a chain of clinics. Scope: online booking for patients on web and phone, admin screens for front-desk staff with roles, and WhatsApp reminders before each visit. Timeline: design, then build with a demo every week, then launch, with the dates for each stage set in the proposal. Included: clickable screens you approve first, a working demo every week, code, accounts and documents in your name, and 30 days of free fixes after launch. The quote comes in writing before any work starts. The proposal ends with an Approved stamp.

Where are you starting from?

Pick the one closest to your situation. We open the most likely sheet below, and tell you what your first week would be.

Nothing picked yet. Pick a starting point above, or choose a sheet yourself below.

What are you building?

Pick the closest match. The sheet below it shows what you get, the time it takes and how you can hire us. The other six stay on the page, so you can compare.

Not sure which one fits?Describe what you need in one sentence. We will tell you which sheet it belongs on.Tell us what you need

Showing details for Custom software development.

Sheet 01 of 07

Custom software development

Web applications built around how your business works.

Typical time
6 to 16 weeks
For most apps. Your proposal shows the exact timeline

What it is

We build a web application around the way your team already works, instead of asking your team to fit a ready-made tool. It has logins, roles (who can see and do what) and an admin area, and it runs in a browser on any device.

What you get

  • A requirement document in plain words
  • Clickable screens you approve before we build
  • A web app with an admin area and user roles
  • Documentation for your team
  • Training for the people who will use it

Good fit if…you run orders, bookings, stock or approvals on spreadsheets and messages, and it is getting hard to keep track.

Example
A chain of clinics books patients on paper and WhatsApp. We build one booking app: patients pick a slot online, front-desk staff see each clinic’s day, and managers see the totals.

How you can hire us

This service: Project + monthly support

A clear scope from requirement to launch. Before any work you get a written proposal with scope, timeline and quote, at no cost until you agree. Then weekly demos while we build, and 30 days of free fixes after launch.

Ask about this service: Custom software developmentSee how a project runs

The other six, at a glance

SaaS product development

From idea to launched SaaS product, with logins, billing and admin. Project + monthly support · Most apps take 6 to 16 weeks.

Mobile app development

Android and iOS apps from one shared codebase. Project + monthly support · Most apps take 6 to 16 weeks.

Game development

Mobile and web games, from first playable prototype to store launch, with in-app purchases and updates. Project + monthly support · Timeline set in your proposal.

MVP for startups

A working first version in 6 to 10 weeks to test with real users. Project · Typical time 6 to 10 weeks.

API development and integration

Secure APIs and connections between your systems and partners. Project · Timeline set in your proposal.

Legacy modernisation

Move old software to modern, faster and safer technology. Project · Timeline set in your proposal.

From blank page to handover

Five stops, then the finish line. At each stop you know what you will receive. Scroll down and the line follows you. At the end, you tick off what is yours.

  1. Stop 1 of 5

    Your requirement

    You tell us the problem, who will use the software and what a good result looks like. We ask questions until the goal is clear.

    You receive

    • A plain-words summary of what you need
    • Our open questions, so nothing is guessed

    What we need from you

    1. One person who can decide, and answers our questions quickly, so the work does not stall.
    2. A short time each week for the demo, to say what to change.
    3. Examples of how you work today: sheets, forms, screenshots or the old software.
    4. Access to any system we connect to, or a test copy.
    5. Someone to sign up for hosting, domain and app store accounts in your name. We guide you.
  2. Stop 2 of 5

    A written proposal

    We turn the requirement into scope, timeline and quote. It costs nothing until you agree.

    You receive

    • Scope: what is built, and what is not
    • Timeline and quote, in writing
  3. Stop 3 of 5

    A clickable design

    We draw the screens and link them together, so you can tap through the product before any code is written.

    You receive

    • Screens you can click through on a phone or a laptop
    • Your changes, made before the build starts
  4. Stop 4 of 5

    Build, with weekly demos

    We build in weekly steps. Every week you see the working software in a demo and tell us what to change.

    You receive

    • A working demo every week
    • Tests on your real data before launch
  5. Stop 5 of 5

    Launch and handover

    We take the software live, train your team and hand everything over. Anything that does not work as agreed, we fix.

    You receive

    • The live product, and a trained team
    • Code, accounts and documents in your name
    • 30 days of free fixes, then a care plan if you want one
Finish line

You own it

Tick what you expect to walk away with. All five go into your written proposal, before any work starts.

0 of 5 ticked

Tick all five to see the deal. Each one is written into your proposal.

Drawing

From blank page to handover

Typical total

Most apps take 6 to 16 weeks

Your exact timeline

In the written proposal, before work starts

Questions to ask any software team, including us

Put these eight to every team on your shortlist. Tick a question to see how we answer it. Copy the list and send it to the others too.

Your checklist

0 of 8 asked

Tell us what you want to build

Describe it in a sentence. A senior engineer replies with questions, then a written proposal with scope, timeline and quote. No cost until you agree.

Quick ideas

Reply within 1 working day · NDA on requestContinue
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