Innovative Mobile Apps for Melbourne's Leading Companies
We're Melbourne mobile app developers who work with companies, startups, creative agencies and educators. We build in React Native, iOS and Android, and we care about getting the design right.
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You're in Safe Hands
We've been doing this a long time, and the companies we work with keep coming back. Here's why.
Proven Track Record
15+ years building mobile apps for Australian brands like Medibank, Kmart, and Telstra. We've shipped a lot of apps.
100% Delivery Success
Every mobile app we've built has shipped successfully. We don't take on work we can't finish well.
Expert Team
Senior developers who know React Native, Flutter, iOS and Android inside out. Between us, we've shipped apps with millions of downloads.
Mobile Apps for Melbourne Industries
We build mobile apps across different industries. Here's where we do our best work.
Startup MVPs
Get to market quickly with React Native. One codebase, two platforms, and an architecture that won't fall over when you scale.
Creative & Agency
Campaign apps, interactive experiences and brand platforms for Melbourne agencies. Polished design with smooth animations that actually work.
Education & EdTech
Learning apps, student tools and campus apps for Melbourne universities and EdTech startups. Built to be accessible and easy to use.
Manufacturing
Shop floor apps, quality control and inventory management for Melbourne manufacturers. Works offline, scans barcodes, handles rough conditions.
Health & Wellness
Fitness apps, mental health tools and wellness platforms. HealthKit and Google Fit integration so your app plugs into what people already use.
Events & Hospitality
Event apps, venue guides and hospitality tools for Melbourne events and venues. Ticketing, maps and push notifications built in.
Success Stories
Some of the apps we've built and the results they got
Award-Winning Mobile Banking App
We built Newcastle Permanent Building Society's mobile banking app from the ground up. It changed how their customers bank and picked up design awards along the way.
Medibank
Mobile platform with a 4.7 rating and 99.9% uptime. Over 100,000 users rely on it for patient engagement.
Kmart
Replaced 40+ separate shop floor tools with one app. Cut operational time by 60% across 300+ stores.
Telstra
IoT asset tracking app used across Australia. 4.6 rating, 25,000+ active users tracking millions of assets every day.
Want Similar Results?
Tell us what you're building. We'll have a chat about your app and give you honest advice on how to approach it.
Let's Talk About Your AppWhy Team 400
We're not AI consultants who started yesterday and can't code. We're top engineers who've been building business software & AI systems for 25+ years.
Top Engineers
Top 5% talent. 10+ years experience each. Principal-level engineers and solution architects. We've built the integrations your AI needs to actually work.
R&D-Driven
Early adopters of Claude Workspaces, AI Agents, and the latest AI tools. We test what's next so you get what actually works in production.
We Make It Work
We don't walk away until it's successful. No matter what obstacles come up, we find a way. Your AI project will work, that's not negotiable.
Michael Ridland
25+ years developing AI-driven software solutions. Founded and scaled an award-winning AI consultancy from startup to 85 professionals. Microsoft MVP Alumni, international speaker, and creator of influential open-source projects.
What Our Clients Say
Real results from real Australian businesses
"This work team is absolutely outstanding"
CEO
Cargo Guardian
"Your work is great, its going to save us a huge amount of time"
CEO
Coast Smoke Alarms
Why Melbourne Companies Choose Us
You want an app team that actually ships on time and doesn't blow the budget. We've built our whole process around making that happen.
- Fixed pricing, no surprises
You'll know the cost before we start. No scope creep invoices showing up later.
- Senior engineers only
Nobody learning on your dime. Every developer on your project has 8+ years of experience.
- From MVP to enterprise scale
We've built scrappy MVPs to validate ideas and rebuilt platforms used by millions. Happy to do either.
Melbourne Mobile App Success
"Team 400 delivered our app on time and on budget. The quality matched what we'd expect from a much larger agency."
Melbourne Fitness Startup
"Our staff app cut onboarding time in half. Clean UI, works perfectly offline."
Victorian University
How We Build Apps
From first conversation to App Store launch, here's what working with us looks like
Discovery & Strategy
We sit down with you and figure out what you actually need. Not what sounds good in a brief, but what will work for your users.
You get:
Clickable prototype + clear cost range
- Stakeholder interviews
- User research & personas
- Technical feasibility study
Design & Validation
We prototype, put it in front of real users, and iterate. Better to find problems now than after launch.
You get:
Tested designs + validated user flows
- UX/UI design & prototyping
- User testing & feedback
- Design system creation
Agile Development
We work in 2-week sprints. You'll see real progress on your device, not just status updates in a spreadsheet.
You get:
Working builds on your device every 2 weeks
- Sprint planning & execution
- Continuous integration/deployment
- Regular demos & feedback
Launch & Optimise
We handle the App Store submission and stick around for 30 days after launch to fix anything and optimise based on real usage data.
You get:
App Store deployment + 30-day optimisation support
- App Store deployment
- Performance monitoring
- Ongoing optimisation
Why Our Process Works
Predictable Timelines
You'll always know where things are at. No guessing, no nasty surprises at the end.
Collaborative Partnership
We don't disappear for months. Regular check-ins and demos so you're always in the loop.
Measurable Results
We test with real users and look at real data. That's how you build something people actually use.
Start Risk-Free with Our Discovery Phase
Picking a dev team is a big call. So we make it easy to test the waters before you commit to the full build.
Fixed-Price Discovery Phase
- Clear, upfront pricing - no surprises
- Clickable prototype to test with users
- Detailed cost range for full project
- Technical architecture & roadmap
No Obligation to Continue
- Keep all deliverables regardless
- Use our plan with any development team
- Only proceed if you're 100% confident
- Senior developers only - no juniors
Technologies We Work With
Cross-Platform
- • React Native & Expo
- • Flutter & Dart
- • .NET MAUI
- • Xamarin Forms
- • Ionic & Capacitor
Native iOS & Android
- • Swift & SwiftUI
- • Kotlin & Jetpack Compose
- • Objective-C
- • Java for Android
- • UIKit & Android SDK
Backend & Services
- • Firebase & Firestore
- • AWS Amplify
- • Azure Mobile Apps
- • RESTful APIs & GraphQL
- • Push Notifications
Got an App Idea? Let's Talk.
Tell us what you're thinking. We'll give you straight-up advice on the best way to build it.
Complete Digital Delivery in Melbourne
We also build the backends, web platforms, and AI systems that power Melbourne organisations. If your app needs a backend, we can handle that too.
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