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✷Independent studio · Spain

Digital product
made with care.

The Martinez Labs is the studio of Jose María Martínez Martínez. I design, build and ship digital products end to end: from concept to store.

01 · Mundocuento

The Martinez
Labs

Digital product studio

Design · Code · Store
2026Spain
01 — Project

Projects

Products of my own, built end to end.

01Live

Mundocuento

Illustrated stories with a voice, made for bedtime.

A library of twenty stories in three languages that works offline. No ads, five stories free forever and an optional subscription for the rest.

  • Android
  • Children's reading
  • Google Play
Mundocuento home screen
Story detail screen

The studio's first project

Android · No ads · Optional subscription
02 — Who makes it

Jose María Martínez Martínez

Software engineer and product designer

“The best interface is the one that steps aside and leaves room for what matters.”

I work alone, end to end: architecture, interface, audio and shipping to the store.

The Martinez Labs is the name I sign that work with. A small studio on purpose, so every detail gets the time it needs.

  • React Native
  • Expo
  • Firebase
  • Cloud Functions
  • SQLite
[email protected]
03 — Disciplines

What I do

From the idea to the store, with no middlemen.

01

Product and design

Restrained interfaces, careful typography and flows that ask for nothing extra.

  • UI design
  • UX
  • Design systems
02

Mobile development

Native apps with React Native and Expo, shipped and maintained in the store.

  • React Native
  • Expo
  • TypeScript
03

Backend and cloud

Authentication, data and serverless functions with strict access rules.

  • Firebase
  • Cloud Functions
  • Firestore
04

Audio and narration

Natural-sounding playback, audio caching and server-side cost caps.

  • Audio
  • Cache
  • Playback
04 — Contact

Let's talk

For proposals, collaborations, or simply to say hello.