Production-grade code
Clean, tested, maintainable code: apps built on solid foundations, not duct tape and shortcuts.
App Development Company: Mobile, Web & SaaS
App development built to scale your business
A great idea is only as good as the product you ship it in. MDX is an app development company: we design and build custom iOS and Android apps, web apps, and SaaS platforms, backend and APIs included, so your idea launches fast, scales cleanly, and wins the users it deserves.
Trusted by founders who ship apps that scale 
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About your goals
What's the biggest win you want from your app?
What to create
What do you most need built?
Where you're at
Where are you with your app today?
Timeline
When do you want it launched?
Investment
What budget range are you working with?
About you
What best describes you?
Last step
Where do we send your project plan?
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Your result
Nice work, there. here's your fit
Custom App Build
Perfect, there, your full proposal is on its way to your inbox. We'll follow up within 24 hours.
View our work 35 case studies published
$6k custom builds from
24h reply after you enquire
The Solution
We build custom apps your competitors will envy
MDX builds custom apps that do two jobs at once: they turn your idea into a product people use, and they scale cleanly as you grow. You work with one team for the interface, the backend, the APIs, the database, authentication, and third-party integrations. For browser-based products, see our web app development service.
Every app we build is engineered for one outcome: turning your idea into a product that ships and scales.
Built to scale
More users and features without a costly rebuild.
Faster to market
Lean, MVP-first approach: launch and validate in weeks, not months.
Buggy MVPs Bloated Codebases Endless Rebuilds No-Code Limits Apps That Don't Scale Slow, Clunky UX
The Problem
A great idea dies trapped in a badly built app
Buggy MVPs, no-code dead-ends, apps that crash under load. Your idea deserves better: software built to ship and scale. We work with founders and product teams building a new app, validating an MVP, rebuilding a live app that is behind the times, or creating custom internal software to run their operations.
GET STARTED Our Process
From Idea to Launched, Without the Headache
A great app doesn't just work. It grows the business for you.
We scope the build
A quick deep-dive into your idea, users, and goals. We map the features and scope you need. No 40-page questionnaires.
We design and build
We design the UX and engineer the app in milestones, with working previews at each stage so nothing surprises you. A focused MVP usually ships in 6 to 12 weeks.
We launch and scale
It ships, tested end to end, and we stay on. You get an app that works; we keep it fast and growing.
The Outcome
A great app isn't a cost. It's how ideas become businesses
Turn your idea into a product people use every day, and a business that scales with it. On the web side, we created the client-facing trading dashboard for Genesis FX Markets together with its marketing website.
Why Us?
Anyone can ship an MVP. Few can build one that scales.
Most agencies hand you a buggy MVP.
We build apps that scale with you.
No-code: Limited
Clean code
Clean code
that scales
Built from scratch
for your users
Mobile, web,
and beyond
We stay. We
refine.
Every detail crafted
by hand
Our Craft, Your Expression.
Your idea could be a real product right now. Let's build it.
Book a free strategy call and we'll map exactly what it takes to build your app the scope, the timeline, and what it could do for your business. No pressure, no jargon.
GET STARTED
Impact & Scale 01 35 Case studies published 02 $6k Custom builds start from 03 24h Reply after you enquire 04 Weeks To ship a focused MVP
BY THE NUMBERS
Metrics that matter. We measure success by the apps we help our partners launch and the users they win.
Testimonials 
LEAVE A REVIEW 
Don't take our word for it
4.9 /5
We've delivered +100 projects that helps companies generate real results.
Trusted by clients worldwide
MDX understood our brand before we even finished explaining it. They turned EATnaked into a site that feels as clean and honest as the product itself: fast, beautiful, and effortless to navigate. Working with them felt less like hiring an agency and more like adding a team that actually cared.
We needed a site that made us look as solid as the work we do, and MDX delivered exactly that. The whole process was smooth, professional, and on time. Our new website finally matches the quality of our service, and clients notice the difference the moment they land on it.
The level of craft MDX brought to Prevvi was on another level. They didn't just build what we asked for. They pushed the design further than we imagined and made it feel premium end to end. Genuinely impressed with the attention to detail and how easy they were to work with.
MDX took a complex product and made it feel simple and trustworthy for our users. The design is sharp, the experience is seamless, and they hit every deadline along the way. They became a real extension of our team, exactly the kind of partner you want when the details matter.
FAQs
What You're Probably Wondering
01 How much does app development cost?
Every app is scoped to its features and complexity, so pricing is custom. Custom builds start at $6k. You get an exact quote after a quick call.
02 How long does it take to build an app?
A focused MVP usually ships in 6–12 weeks. Larger platforms with complex features, integrations, and backends take longer. We build in milestones with working previews, so you see and test real progress along the way.
03 What kinds of apps do you build?
Mobile apps (iOS and Android), web apps and SaaS platforms, custom internal tools, and MVPs or prototypes, from a first version to validate an idea to a full production platform built to scale.
04 Do you build native or cross-platform?
Both. We recommend what fits your goals and budget. Cross-platform (React Native, Flutter) ships faster for most products; native makes sense when you need maximum performance or deep device features. We'll advise honestly on the first call.
05 What is app development?
App development is designing and building software people use on phones or in a browser, from the interface to the backend, database, and integrations. A good app turns a business idea into a product customers actually use and pay for.
06 Do you maintain the app after launch?
Yes. We don't disappear at launch. We offer ongoing maintenance, updates, monitoring, and new features so your app stays secure, fast, and keeps improving as you grow.
07 Do you build the backend & APIs too?
Yes. We build the full stack, from frontend and backend to APIs, databases, auth, and third-party integrations, so your app works end to end and you deal with one team, not five.
08 Do you design the app as well as build it?
Both. We design the UX and engineer the app in milestones, with working previews at each stage, so you test real progress along the way.
09 Can you rebuild an app that is already live?
Yes. A live app that needs a rebuild is one of the starting points in our planner. We scope the rebuild on the first call and deliver it in milestones with working previews.
Articles
Ideas that
Ideas that
move brands
forward.
Actionable insights on app development, product, engineering, and the decisions that help startups ship and scale.
GO TO OUR BLOG
Mobile App Development Cost in 2026: What You Will Actually Pay
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Ready to turn your idea into an app?
Book a free strategy call and we'll map exactly what it takes to build your app. No pressure, no jargon.
GET STARTED"At our core, we craft products that blend art direction, modern interfaces, and seamless technology into meaningful digital experiences."
Trusted by ambitious founders and brands
