Sydney · Mobile app development

A Kotlin app development company in Sydney for modern Android apps.

As a Kotlin app development company, we build Android apps that are fast, stable and easy to extend. Kotlin is Google's preferred language, and it shows in the quality of the result.

In-house team Works with Sydney businesses You own every file
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In-house teamno outsourcing
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No lock-instay because it helps
AU
Australia-widePerth based

Last updated

At a glance

  • Kotlin and Jetpack Compose
  • Clean architecture
  • Security and testing built in
  • Google Play launch support

What does a Kotlin app development company do?

A Kotlin app development company builds Android apps using Kotlin, Google's recommended language for the platform. Kotlin's safety features and concise code reduce crashes and speed up development, and it works with Jetpack Compose for modern interfaces.

What we cover

What goes into your app

The pieces that make up the service.

Want the national picture? Read about our Kotlin app development service.

Clean architecture

MVVM layers that keep code testable and tidy.

Jetpack Compose

Modern, declarative interfaces with less code.

Coroutines and Flow

Smooth background work and live data.

Security

Encrypted storage, safe authentication and hardened builds.

Testing and CI

Automated tests and release pipelines.

Kotlin Multiplatform

Shared logic with iOS where it makes sense.

What's included

What comes with this service.

The essentials of the service, plus the standards that come with everything we do. No hidden extras.

Request a proposal →
  • Java to Kotlin migration: Gradual conversion of older Android code
  • Performance profiling: Faster start-up and smoother scrolling
  • Release pipeline: Automated builds for dependable releases
  • Free discovery call: a short chat about your goals before you commit
  • Files you own: every asset and editable source file handed over to you

Is it right for you?

When a custom app makes sense

  • You want a modern Android codebase
  • Your existing Java app is hard to maintain
  • You need a secure, well-tested Android app
  • You plan to share logic with iOS

Compare

Kotlin or Java for a new Android app?

Kotlin or Java for a new Android app?
CompareKotlinJava
SafetyNull safety reduces crashesMore runtime errors
ProductivityLess code to write and reviewMore boilerplate
ToolingGoogle's priorityMaintained, not prioritised
LegacyWorks alongside JavaFine for old code

How we work

Our process, step by step

Plan

We define features and architecture.

Design

We design with Material Design.

Build

We develop in Kotlin with regular demos.

Test

We run automated and device tests.

Release

We launch on Google Play and support updates.

Built around you

Every project is quoted on your needs.

No one-size packages. After a free discovery call, you get a clear, itemised proposal based on what your business actually needs.

Request your proposal →
1
Scope

Features, screens and integrations.

2
Existing code

New build, or migration from Java.

3
Security needs

Data sensitivity and compliance.

4
Devices

Range of phones and tablets supported.

5
Maintenance

Ongoing updates and monitoring.

Why Kedra Digi

Why Sydney businesses choose Kedra Digi.

One accountable team

Strategy, design, development and marketing together.

A clear proposal first

Itemised deliverables before work starts.

You own everything

Files, code and accounts are handed over.

Kedra Digi is an Australian-owned digital agency. Based in Perth, we work with Sydney clients through video reviews, shared files and clear milestones.

Common situations

What Sydney clients usually ask us to solve

New Android apps needing performance

Native Kotlin gives smooth scrolling, direct access to the camera and sensors, and the closest fit with Google's current libraries.

Rugged devices and kiosks

Scanners, shared tablets and locked-down handsets need specific configuration. We build and set up apps for the hardware your crews rely on.

Older Java apps needing modernisation

Existing Java code can move to Kotlin gradually, reducing crashes and making the app easier to extend, without a full rewrite.

?

Frequently asked questions

Straight answers to the questions we hear most.

Ask your own →
Is Kotlin better than Java?
For new Android projects, yes. It is safer, more concise and Google's preferred language.
Can you convert our Java app?
Yes. Kotlin and Java coexist, so we can migrate gradually and safely.
Can Kotlin be used for iOS?
Kotlin Multiplatform can share business logic with iOS while each platform keeps a native interface.
Can you work with our Sydney team?
Yes. We share builds, run demos and agree milestones, so your team stays closely involved.
How is it quoted?
It depends on scope and existing code. You receive an itemised proposal first.
Which Android versions will the app support?
We choose them from your users' device data, balancing reach against the cost of supporting very old systems, and test across manufacturers to catch quirks.
Can you add features to our existing Kotlin app?
Yes. We review the code first, then add features in a way that fits the structure and does not make later changes harder, with tests to protect what already works.

Free discovery call

Ready to talk about your project?

Tell us what you are working on. We will reply within one business day with honest advice.

Prefer email? [email protected]