Available for hire

Hi, I'm Mark Muya

|

I build beautiful, performant apps for web and mobile. From AI-powered health trackers to smart expense tools — I turn complex ideas into products people actually love using.

See My AppsGet In Touch

About Me

Building apps that matter.

I'm Mark Muya, a full-stack and mobile developer passionate about creating software that genuinely helps people. Whether it's a health app that promotes self-awareness or a finance tool that makes budgeting effortless — I build with purpose.

My stack spans React Native for cross-platform mobile apps, Next.js for blazing-fast web experiences, and AI APIs like Claude and OpenAI to add intelligent features that delight users.

I'm currently open to new opportunities — full-time roles, contract work, or exciting collaborations. Let's build something great together.

Hire MeDownload CV

Mobile Apps

React Native & Expo for iOS and Android

Web Apps

Next.js, React, TypeScript full-stack

AI Features

Claude API & OpenAI integrations

Clean Code

TypeScript-first, tested & documented

My Work

Apps I've Built

Real products crafted with care. Download, try, and see for yourself.

🏃
Coming SooniOS & Android

HourlyHealth AI

Know your health, hour by hour.

Log every hour of your day, track mood and activity intensity, and receive AI-powered daily, monthly, and yearly health insights. Built with React Native & Claude AI.

  • 24-hour activity grid
  • AI daily health analysis
  • Mood & intensity tracking
  • Streak & achievement system
React NativeExpoClaude AISQLite
Notify Me
💸
●LiveWeb

SpendWise

Smart expense tracking, beautifully simple.

A modern web-based expense tracker with category analytics, monthly trend charts, smart filtering, and CSV export. Built with Next.js 14 and Tailwind CSS.

  • Expense categories & filters
  • Monthly trend analytics
  • Category breakdown charts
  • CSV export
Next.jsTypeScriptTailwindRecharts
Try Live Demo
🚀
Coming SoonCross-Platform

More Coming Soon

New projects in development.

I'm always building something new. Follow me on GitHub or drop me a message to stay updated on what's next.

  • AI-powered tools
  • Mobile apps
  • Open source projects
  • Developer utilities
Full-StackMobileAIOpen Source
Follow on GitHub

Have a project in mind?

I'm always open to building something new and exciting. Let's talk.

Start a Conversation

Expertise

My Tech Stack

Tools and technologies I use to bring ideas to life.

Mobile

  • ⚛️React Native
  • 📱Expo
  • 🍎iOS
  • 🤖Android

Frontend

  • ▲Next.js
  • ⚛️React
  • 🔷TypeScript
  • 🎨Tailwind CSS

Backend

  • 🟢Node.js
  • 🐘PHP
  • 🔌REST APIs
  • 🐬MySQL

AI & Tools

  • 🧠Claude API
  • ✨OpenAI
  • 🗄️SQLite
  • 🔀Git

2+

Apps Launched

100%

TypeScript

∞

Coffee Consumed

24/7

Passion for Code

Let's Talk

Ready to Work Together?

Whether you want to hire me, collaborate on a project, or just say hello — my inbox is always open.

Email

markmuya@outlook.com

For inquiries, job opportunities, and collaborations

Live Chat

Chat with my assistant

Use the chat bubble (bottom-right) to leave a message

Location

Open to Remote & On-site

Available worldwide for remote work

Response Time

Within 24 hours

I read every message and respond promptly

👋

Hire me for your next project

I specialize in building modern web and mobile applications with clean code, great UX, and AI-powered features. I'm detail-oriented, communicative, and deliver on time.

  • ✓ React Native mobile apps (iOS & Android)
  • ✓ Next.js web applications
  • ✓ AI integrations (Claude, OpenAI)
  • ✓ Full-stack PHP/MySQL backends
Send Me an Email