onetap build Web apps, mobile apps & business software

App development in Hampshire, built around how you work.

Off-the-shelf software makes you work its way. We build the thing you actually need: a web app your customers log into, a tool that replaces the spreadsheet everyone hates, an app that does the one job nobody else has built properly. Based in Eastleigh, working across the UK, and you deal directly with the person writing it.

Quoted per project · paid on completion
What we build

Software that fits the business.

Most of what we build falls into one of these. If yours does not, say so and we will tell you honestly whether we are the right people.

Customer-facing web apps

Accounts, logins, dashboards, payments. The kind of thing your customers use themselves instead of ringing you.

Apps that install like native

Add to home screen, works offline, sends push notifications. Roughly half the cost of building the same thing twice for two app stores.

Replacing the spreadsheet

The shared file that three people edit and nobody trusts. Turned into something with proper records, permissions and an audit trail.

Booking, quoting and invoicing

We already run these for our own clients, so the hard parts are solved. Reminders, deposits, card payments, chasing the late ones.

Joining systems together

Your accounts package, your payment provider, your supplier feed. Made to talk to each other so nobody retypes anything.

Internal tools for your team

Job boards, stock, route planning, reporting. Built for the handful of people who use it all day, not for a demo.

Fixing what you already have

An app someone built and abandoned, or one that nearly works. We will take it on if it can be saved, and tell you if it cannot.

The code stays yours

You get the repository and the deployment at the end. No licence, no lock-in, and no obligation to keep us on afterwards.

How it runs

Phased, so you are never betting the lot.

Software projects go wrong when everything is agreed up front and paid up front. We scope the work into phases, price each phase, and you pay when a phase is finished and working. If you want to stop after phase one, you stop, and you keep what has been built. Need a website instead, or as well? That starts at £10 a month, and bespoke tools sit between the two.

03 / Get in touch

Tell us what you need building.

We'll come back with a free demo of what your site could look like, yours to keep, no commitment.

Prefer email? hello@onetapweb.co.uk