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YYY Software Ltd
Two hands holding a phone with a dark, switched off screen on a wet residential street of brick terraced houses.
London · Consumer software

We build mobile applications for everyday life.

A London software company, registered in 2026, working on consumer apps for iOS and Android.

Most people’s phones are full of software they tolerate. We are interested in the small number of apps they would miss.

What we build

Three commitments that describe the work, not a record.

Everyday tools

One thing, done properly

Single purpose applications that do one thing without an account, a subscription wall on first open, or a feed. If an app can work before you sign in, it will.

Considered interfaces

Drawn and built together

Design and engineering are done by the same small team, so the thing that ships is the thing that was drawn. There is no handover in which the intent gets lost.

Plainly described

Built in the open about what it is

Every app we publish will carry a plain description of what it does, what it deliberately does not do, and what data it holds on the device and off it.

Loose sheets of paper marked with pencil rectangles, a wooden pencil and a steel ruler on a pale oak desk in window light.
Approach

We start on paper, and we stay small on purpose.

An idea earns a prototype when it can be written down in one sentence that a person outside the company would understand. Anything that needs a paragraph of setup is not ready.

From there the work runs in short passes: draw it, build the smallest version that can be held in a hand, use it for a week of ordinary days, then decide. Small keeps the loop honest. A team that can rebuild a screen in an afternoon does not have to defend a bad one.

Principles

Five commitments we will be held to.

  1. We ship small.

    A first release is allowed to be narrow. It is not allowed to be vague about what it is.

  2. We would rather cut a feature than ship it half built.

    A missing feature is a decision a person can plan around. A broken one is a small betrayal.

  3. We do not sell attention.

    Our apps will not carry advertising, and we will not build engagement mechanics whose purpose is to keep a phone in a hand longer than the task requires.

  4. We treat a phone as a personal object.

    Data stays on the device unless leaving it is the point of the feature, and when it leaves we will say so in the app, not only in a policy.

  5. We publish what we are working on rather than announce what we have achieved.

    There is nothing to celebrate yet. When there is something in a store, it will be listed here with a date and a version, and so will the things we abandoned.

How work is decided

Three questions, asked before anything is built.

Does the app do something a person already does, only with less friction? Can it work with no account and no network for its core job? Would we keep it on our own phones after the novelty of building it has gone?

An idea that fails the third question is abandoned, and we will say when that happens rather than let it sit in a list. Abandoning is part of the method, not a failure of it.

A kitchen table in a small flat with a phone lying face up, screen off, a glass of water and a hard rectangle of low winter sunlight across the wood.
Where the work is aimed

Ordinary minutes, on ordinary phones.

The inside of a London bus on a grey afternoon, a hand on the rail and rain running down the window.
The four minutes on a bus, when an app has to be usable with one thumb and no attention to spare.
Close detail of a thumb resting on the edge of a phone with a dark screen, held against a wool coat.
A phone is held, not operated. We design for the hand that is already holding it.
A tiled front doorstep of a British terraced house with a painted door, a doormat and a bicycle wheel at the edge of the frame.
The moment on a doorstep when something needs to be checked in five seconds and then put away.
The register

Everything here is checkable in about thirty seconds.

Companies House registration details for YYY Software Ltd
Legal nameYYY SOFTWARE LTD
Company number16938311
Registered officeFlat 47 Bennets Courtyard, Watermill Way, London, SW19 2RW
Incorporated1 January 2026
JurisdictionEngland and Wales
SIC code62012, business and domestic software development

We publish our own registry entry because it is the only thing about a company this young that anyone can independently verify. Search the company number at Companies House and you will find the same six lines.

We are early. If you want to know what we are building, tell us where to send it.

One email, written by a person, when there is something worth showing. No newsletter schedule, no product announcements about products that do not exist.

Email reaches a person, not a ticket queue. We aim to reply within three working days.