Freelance developer · iOS, Android, Web & Backend

Available

Your app, built by someone who has already shipped his own.

Q: iOS and Android at the same time?

Yes, I can build both platforms natively. That said, if you're launching a new product, it's often more cost-effective to start with one platform, validate with real users, and carry the learnings to the second.

Q: Native or cross-platform?

I work natively for quality and performance. If your budget calls for cross-platform, I'll advise you honestly on the best option.

Q: Do you work with agencies?

Yes, I work as an external white-label developer under your brand, with the same rigor as with direct clients.

I'm Manu. I've been building software since 2015 — native apps, websites and backends that work. You work directly with me: no agencies, no middlemen, no noise.

Book a call See my work

Smart Converter, Textara and Lucent Logic on iPhone

Building since 20153 apps on the App Store

I've built apps for

StradivariusWallapopMangoUbeeqo

Services

Everything your digital product needs

MVP for startups

From idea to the store in 8–12 weeks: app, backend and launch, at a fixed price.

Native iOS & macOS apps

Swift and SwiftUI for premium experiences on iPhone, iPad and Mac.

Native Android apps

Kotlin and Jetpack Compose with modern architecture.

Backend & APIs

Node.js and Rust. Infrastructure that scales with your business.

Websites

Corporate sites and landing pages: fast, polished and SEO-friendly.

Maintenance & consulting

Evolving existing apps, code audits and ongoing support.

Shipped projects

Apps & websites · own products

Smart Converter

iOS · App Store

Units & time converter. Full design, development and ASO.

View project →

Lucent Logic

iOS · App Store

Light puzzles with a custom game engine in Swift.

View project →

Textara

iOS · macOS · App Store

AI text understanding for iPhone and Mac + custom backend.

View project →

Process

Clear from start to finish

1 · Intro call

30 free minutes to understand your idea and its feasibility.

2 · Proposal

Scope, timeline and fixed price, in writing.

3 · Development

Builds on your phone every 1–2 weeks. Visible progress.

4 · Launch

Store release plus one month of support included.

About

Manuel Martínez

I've been building software since 2015. I led the development of the Stradivarius app on iOS and Android, and worked on the Wallapop, Mango and Ubeeqo apps — products used by millions of people. I've also built and shipped my own apps on the App Store — Smart Converter, Lucent Logic and Textara — which means I know the full cycle: idea, design, development, release and maintenance.

As a freelancer I work with startups that need their first app, companies going digital, and agencies looking for a reliable external developer. Direct communication, realistic timelines, and code you won't be ashamed of.

I'm based in Vigo (Galicia, Spain) and work with clients across Spain, remotely or in person. I lived in Barcelona for several years, so I'm equally at home in its tech scene.

FAQ

Frequently asked questions

How much does an app cost?−

It depends on the scope. An MVP usually starts from a fixed price we define together in the proposal, after the free intro call.

iOS and Android at the same time?+

Native or cross-platform?+

Do you work with agencies?+

Shall we build something together?

Tell me about your project. I'll reply within 24 hours with an honest assessment.

→Book a free 30-min call →LinkedIn