Prox is an Australian-owned app development company in Perth, building iOS, Android and web apps for businesses Australia-wide. Built properly, with a team that sticks around after launch day.
Design, Develop And Grow With One App Development Company
As an app development company, we keep product strategy, UX/UI design and software engineering under one roof. That removes the communication bottlenecks and costly rework that sink most app projects, so your app is built exactly as intended and performs from day one.
Our app developers in Perth build for how Australian users actually behave. Whether you need a complex custom product or a straightforward build, we cover the whole job: native iOS and Android, cross-platform, the backend behind it and the support after launch, for businesses in Perth and right across Australia.
As an app development company, we keep product strategy, UX/UI design and software engineering under one roof.
Half the apps that flop never had a real problem to solve, just a feature list somebody liked. We pressure-test the idea against actual user behaviour before a single screen gets designed.
Every discovery phase turns a rough idea into a build-ready roadmap by seamlessly covering market and competitor audits, user journey and behavior mapping, feature scoping and prioritisation, platform strategy across iOS and Android, technical feasibility audits, and a clear MVP product strategy.
Users decide whether an app's worth keeping within the first few taps. We design interfaces that feel obvious straight away, no tutorial screen doing the explaining for us.
Every interface gets designed for how people actually hold, tap, and scroll a phone through wireframes and user flows, high-fidelity UI design, interactive prototypes, iOS and Material Design standards, onboarding and first-session UX, and robust design systems and libraries.
Some apps need to feel like they were built for the phone, not squeezed onto it. When your product leans on camera hardware, biometrics or raw speed, we build native in Swift and Kotlin rather than force a compromise.
Every native build is engineered to get full performance out of the platform through iOS and Swift development, Android and Kotlin development, hardware and sensor integration, push and messaging systems, offline-first architecture, and advanced app performance tuning.
Most apps don't need two separate codebases to feel right on two different phones. We build in React Native and Flutter to land on the App Store and Google Play together, and pair it with web app builds when the product calls for both.
Every cross-platform build runs on one codebase engineered to perform like two native ones through React Native development, Flutter development, cross-platform architecture, web and CMS integrations, API and SDK integrations, and nonstop integration and deployment.
A great app on a shaky backend is just a great app that falls over the first time real traffic shows up. We build the servers, databases and APIs your app actually leans on.
Every backend build is engineered for real-world load, not a demo environment, through robust API design and development, secure cloud infrastructure across AWS, Azure, and GCP, database design and architecture, payment and third-party integrations, advanced authentication and data security, and scalable server architecture.
Getting an app approved by Apple and Google is its own project, and failing during your launch week is a pain you cause yourself. We test properly, submit clean, and stick around once it's live.
Every launch is backed by real testing and real support, not a handover and a goodbye, through manual and automated QA, device and OS compatibility testing, smooth App Store and Google Play submissions, app store optimisation (ASO), proactive crash monitoring and bug fixes, and ongoing OS updates and maintenance.
PRODUCT STRATEGY & DISCOVERY
FRAMEWORK: Every discovery phase turns a rough idea into a build-ready roadmap by seamlessly covering market and competitor audits, user journey and behavior mapping, feature scoping and prioritisation, platform strategy across iOS and Android, technical feasibility audits, and a clear MVP product strategy.
UI/UX APP DESIGN
FRAMEWORK: Every interface gets designed for how people actually hold, tap, and scroll a phone through wireframes and user flows, high-fidelity UI design, interactive prototypes, iOS and Material Design standards, onboarding and first-session UX, and robust design systems and libraries.
iOS & ANDROID MOBILE APP DEVELOPMENT
FRAMEWORK: Every native build is engineered to get full performance out of the platform through iOS and Swift development, Android and Kotlin development, hardware and sensor integration, push and messaging systems, offline-first architecture, and advanced app performance tuning.
CROSS-PLATFORM & WEB APP DEVELOPMENT
FRAMEWORK: Every cross-platform build runs on one codebase engineered to perform like two native ones through React Native development, Flutter development, cross-platform architecture, web and CMS integrations, API and SDK integrations, and nonstop integration and deployment.
BACKEND, API & CLOUD INFRASTRUCTURE
FRAMEWORK: Every backend build is engineered for real-world load, not a demo environment, through robust API design and development, secure cloud infrastructure across AWS, Azure, and GCP, database design and architecture, payment and third-party integrations, advanced authentication and data security, and scalable server architecture.
APP STORE LAUNCH, ASO & ONGOING SUPPORT
FRAMEWORK: Every launch is backed by real testing and real support, not a handover and a goodbye, through manual and automated QA, device and OS compatibility testing, smooth App Store and Google Play submissions, app store optimisation (ASO), proactive crash monitoring and bug fixes, and ongoing OS updates and maintenance.
Apps People Actually Keep On Their Phone
Every app below started as a pitch and ended up on someone's home screen. We build products people open out of habit, the kind that earns a five-star review without being asked.
Every app below started as a pitch and ended up on someone's home screen. We build products people open out of habit, the kind that earns a five-star review without being asked.
We let our track record do the talking. Discover how Prox Digital
Agency drives transformative growth for global brands.
The App Problems Quietly
Burning Your Budget
People download the app, have a poke around once, and never open it again, because the first session never gave them a reason to come back.
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Picking the wrong tech stack early gets expensive fast, either overpaying for native when you didn't need it, or hitting a wall cross-platform can't clear.
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A rushed submission gets bounced by Apple or Google, pushing the launch date and burning the marketing spend you'd already committed.
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An app that works fine in testing can buckle the moment real users show up, right when the attention you paid for finally arrives.
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Operating systems update, devices change, and an app with no maintenance plan quietly breaks within a year of shipping.
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Zero Retention
People download the app, have a poke around once, and never open it again, because the first session never gave them a reason to come back.
Platform Chaos
Picking the wrong tech stack early gets expensive fast, either overpaying for native when you didn't need it, or hitting a wall cross-platform can't clear.
Store Rejections
A rushed submission gets bounced by Apple or Google, pushing the launch date and burning the marketing spend you'd already committed.
Backend Crashes
An app that works fine in testing can buckle the moment real users show up, right when the attention you paid for finally arrives.
No Post-Launch
Operating systems update, devices change, and an app with no maintenance plan quietly breaks within a year of shipping.
What A Proper App Partner
Actually Gets You
Most agencies sell deliverables. We engineer outcomes. Every engagement runs through a financial lens — because design that doesn't convert is just decoration.
High Retention
Sharp onboarding and real UX research turn first-time downloads into daily habits, not a one-time open and delete.
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Cross-Platform Code
Cross-platform engineering gets you on iOS and Android at once, cutting build time and budget without cutting corners on feel.
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Scalable Backend
Cloud infrastructure engineered for real traffic means your app holds up on launch day and every big day after it.
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Post-Launch Team
Ongoing support and monitoring mean OS updates and bug fixes get handled before your users even notice a problem.
Book a Free Strategy Call
Sharp onboarding and real UX research turn first-time downloads into daily habits, not a one-time open and delete.
Cross-platform engineering gets you on iOS and Android at once, cutting build time and budget without cutting corners on feel.
Cloud infrastructure engineered for real traffic means your app holds up on launch day and every big day after it.
Ongoing support and monitoring mean OS updates and bug fixes get handled before your users even notice a problem.
Every Build.
Every Metric.
Every Win.
From startups to enterprise brands, we've launched mobile
products that solve real problems, engage users, and
create long-term business value.
Apps Shipped
100+ products went from idea to App Store and Google Play, built to earn a permanent spot on someone's home screen.
In-App Revenue Generated
Our app builds have driven measurable revenue through subscriptions, transactions and in-app purchases across every category we've touched.
Client Retention
Great apps need an ongoing partner, not a one-off vendor. Most clients keep working with Prox well past launch day.
Average Onboarding Completion
Sharp UX and first-session design turn casual downloads into users who actually make it through onboarding and stick around.
From startups to enterprise brands, we've launched mobile
products that solve real problems, engage users, and
create long-term business value.
100+ products went from idea to App Store and Google Play, built to earn a permanent spot on someone's home screen.
Our app builds have driven measurable revenue through subscriptions, transactions and in-app purchases across every category we've touched.
Great apps need an ongoing partner, not a one-off vendor. Most clients keep working with Prox well past launch day.
Sharp UX and first-session design turn casual downloads into users who actually make it through onboarding and stick around.
The Stories Behind
The App Store Rating
I have engaged several agencies in India; they were proficient with templates and development, yet lacked the innovative ideas we sought upon discovering Prox Digital Agency, their vibrant and imaginative work convinced me that they are the ideal partner for our vision
Prox Design has delivered exceptional results, profoundly transforming both our brand identity and lead‑generation pipeline. The entire team demonstrated professionalism, responsiveness, and a genuine commitment to our success.
During the initial call with Prox, I felt an immediate confidence that eliminated the need to consider any other agency. Their professionalism and innovative redesign of our website delivered exceptional results. I look forward to partnering with them for our digital marketing initiatives
Prox Design spearheads our marketing strategy, significantly enhancing our brand presence. Their efforts have generated higher‑quality leads and deeper audience engagement. I give them my highest recommendation
When you're building a brand, every detail starts to matter. Prox Digital Agency helped us connect the new identity with the website so they actually feel like the same business. Really happy with the direction. The result is more confident and much easier to build on.
I’d worked with a few designers before, but none of them really got what I was trying to say with my brand. Prox Design Studio actually listened. They picked up on the tone, the vibe, the whole story behind it, and you can see that in every little detail. The colors, the layout, everything just felt right.
Most designers I worked with before just made things look nice but didn’t get what I was trying to say. Prox Design Studio was different. They actually took the time to understand my content and what it meant. The posts they made didn’t just look good—they helped tell the story I wanted to share. My feed finally feels like me, and people have noticed the difference.
Build The App Users
Will Actually Use
Book a free 30-minute session with our Perth product team to talk through cost, timeline and what it would actually take to bring your app to market.
The Modern Stack Behind
Apps We Ship
We build agile applications that adapt to your growth powered by a modern, high-performance tech stack featuring Flutter, React Native, and Node.js.
Built Around How Your
Users Actually Behave
[Awards & Recognition]
Proof Beats Promises
Every Single Time
Join The Growth Journey Of 500+ Brands
[Services Map]
Insights Worth Stealing (So We Publish Them Anyway)
Frequently
Asked Questions
We’ve heard it all. Here’s everything you need to know before working with us.
An app development company takes your idea from concept to a working product on the App Store and Google Play: strategy, UI/UX design, native or cross-platform engineering, backend infrastructure, testing and launch. Skipping any one of those steps is usually where projects come unstuck.
Most app shops hand your project between separate design and engineering teams. Prox runs both under one roof, so nothing gets lost between the first wireframe and the finished build, and you are not stuck being the go-between.
No. Our team is based in Perth, but we are Australian owned and operated and build apps for businesses in Sydney, Melbourne, Brisbane and beyond. A good app development partner should not be limited to one postcode.
Native Swift for iOS, Kotlin for Android, or React Native and Flutter for cross-platform builds, whichever actually fits the product. Mobile app design decisions come first, the tech stack gets chosen to serve that, not the other way around.
Every project starts with proper discovery and a signed-off scope, then we design the full app UI before a line of code gets written. You see wireframes, prototypes and app design mockups at every stage, not just a finished build at the end.
Most apps take between two and five months depending on scope, the number of platforms and backend complexity. You get a realistic timeline upfront after discovery, not a vague guess.
Cost depends on scope, platform choice and backend complexity, from a lean MVP through to a fully custom enterprise build. We break every estimate down by feature before you sign anything, and you can talk through your numbers in a free strategy call.
Enormously. A sharp app design and development process is what separates an app people tolerate from one they actually enjoy using. Good mobile app design isn't decoration, it's most of why people stick around past the first open.
Yes. We cover everything from early wireframes and prototypes through to a full app UI design system your team can keep using after launch.
Both, and we will help you decide which to launch first if budget makes that the smarter move. Most projects launch cross-platform now, since it gets you on both stores without doubling the build.
It happens, usually over a policy detail nobody flagged early. We test against submission guidelines before we ever hit submit, and if a rejection does come through, we fix and resubmit fast instead of leaving you stuck mid-launch.
Yes. Every build includes post-launch monitoring, bug fixes and updates to keep pace with new iOS and Android releases. A mobile app development company you can rely on should not disappear the day after launch.
No. Small businesses and startups make up a good share of our app development work, especially once a spreadsheet or off-the-shelf tool can no longer keep up with the business.
Everything is custom. We do not stretch a generic app template to fit your brand; every interface is designed around your users and your business.
Perth celebrates brands that dare to stand apart. Prox helps ambitious businesses build stronger market presence, attract the right customers, and create lasting growth through strategy, creativity, technology, and AI-powered marketing.
Our London team works with startups, scale-ups and established companies across the UK and Europe, helping them earn attention, build demand and grow through strategy, creativity and AI-powered marketing, to the same standard we bring to Australia.
Orlando is home to ambitious businesses serving local, national and global audiences. Prox builds digital marketing systems that strengthen brand presence, attract qualified customers, and create sustainable growth through creativity, technology and fast performance.
Dubai moves fast and ambitious brands need marketing that keeps pace. Prox partners with businesses across the region to create digital campaigns, memorable customer experiences and performance strategies that transform visibility into restless commercial growth.
Address
Suite #1051, Perth, WA 6000 114 Goodmayes Road, London,
IG3 9UZ, United Kingdom 7345 W Sand Lake Road, Ste 210,
Office 2890, Orlando, FL 32819 Queen Elizabeth 2, DUQE Square
Business Center, Port Rashid, Dubai
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If you’re looking for a global growth agency that understands growth, execution, and accountability, you’re in the right place.