Built with Java
Diluo: Wi-Fi formula machine apps and cloud admin
iPhone and Android apps for Diluo, a Wi-Fi baby-formula brewing machine, with child profiles, diary and statistics, plus a Rails cloud admin and API behind them.
Java development for Android apps and back-end services
We build and maintain Java code across Android apps and server back ends: device apps, school and news platforms, and older Java systems that need upkeep. You own the code we write for you.
What we build with Java
Examples from our own projects, described in general terms.
Health and device apps
Android apps that weigh food on a Bluetooth smart scale and track nutrition. See the FitMi case study.School platforms
Parent apps for events, notices, messages and absence reports. See the SchoolWiki case study.News apps
Apps that rank news stories by a reader's interests, with sign-in, sharing and notifications. See the Newsology case study.Connected devices
Apps that control a Wi-Fi baby-formula machine. See the Diluo case study.Back-end services
Server-side Java services and APIs for web and mobile apps.Modernisation
Older Java apps updated, or moved to Kotlin, without a full rewrite.When Java is the right choice
Java remains a sound choice for:
- Existing Android apps and back ends written in Java that need features or fixes.
- Large back-end systems where a typed language and mature libraries pay off.
- Teams that already run Java in production.
For new Android apps we usually recommend Kotlin; see Android development. For new web back ends, Node.js, Python or .NET may fit better.
Industries we have built for
The industries of our Java projects. Each card opens the projects we show for it.
- HealthcareDental and clinic websites, patient apps.17 projects
- EducationLearning platforms and school software.7 projects
- Media and communityPublishing, streaming and community products.16 projects
- Operations and facility managementField-staff, workforce and facility management.8 projects
- Business software and complianceCompliance platforms, back-office tools and data apps.34 projects
Case studies built with Java
Built with Java
SchoolWiki: school communication app for parents and staff
SchoolWiki, a school communication platform: web API, parent site and iOS/Android apps for events, notices, messages, newsletters and absence reports, with a setup wizard.
Built with Java
FitMi: smart-scale nutrition and exercise tracker
FitMi, native iOS and Android apps that weigh food on a Bluetooth smart scale, log meals with nutrition data and track weight, sleep, water and exercise.
Articles
Guides from our team on the questions buyers ask about this service.
Mobile app technologies in 2026: what to build with and where AI should run
The technologies behind a mobile app in 2026: front end, back end, data, security and AI, including on-device AI from Apple and Google, with store requirements and a decision checklist.
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React Native vs Flutter in 2026, and when native is the better choice
React Native vs Flutter in 2026: how to choose between them, Kotlin Multiplatform and native iOS and Android apps, with current versions and a decision table.
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Android app development best practices in 2026: architecture, Compose and Material 3
Android best practices in 2026: Google's recommended architecture, Jetpack Compose, Material Design 3, adaptive layouts, quality pillars, stability thresholds and Google Play target API requirements.
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Frequently asked questions
Where do you use Java?
Enterprise applications, integrations, back-end services and Android apps, across industries such as healthcare, finance, retail and manufacturing.
Do you work with J2EE and enterprise integration?
Yes. We can implement enterprise application integration and work with J2EE.
Can you maintain or modernise a legacy Java application?
Yes. We review the code first and then agree what to maintain, refactor or migrate.
How do I get a quote?
Use the form on this page or book a project call. Tell us what you need and we come back with questions and next steps.
How can we work together?
There are three ways, on the same terms:
- Dedicated team, best for ongoing work: interview the developers, then they work on your project full or part time.
- Fixed scope, best when requirements are clear: we agree the scope and the price up front, and deliver against it.
- Time and material, best when the scope will change: you pay for the time used and can change priorities as the work goes on.
Whichever you choose, we sign an NDA before work starts, you own the code we write, and every change is reviewed in your repository.
Can I interview the developers before we start?
Yes. For a dedicated team you meet the developers in an online call and interview them before they join your project.
Have a Java project in mind?
Tell us what you need built, fixed or modernised. We come back with questions, a suggested approach and an estimate.