Cross-platform development can share parts of an Android and iOS application, while the platforms still differ in behaviour and release requirements. EidenTech can plan and build a shared application around your user journey, reviewing where shared code helps and where a device feature requires a more specific implementation.
How we approach your project
Compare the user journey with platform capabilities
We begin with the task people need to complete, the intended devices, and the features needed to support that task. Camera access, maps, notifications, payments, and background activity require a review of supported platform behaviour. Discovery records which capabilities can use a shared implementation and which need a native component or a different interaction. Sharing code does not eliminate operating-system differences. The proposal should make those differences clear so the first release is chosen around a complete mobile journey rather than an assumed percentage of reusable code.
Share structure while respecting mobile interaction
Reusable data access, validation, and interface components can keep the product consistent. Navigation, keyboard behaviour, safe areas, text scaling, and touch feedback still need testing on each platform. We scope useful loading, empty, and interrupted states, including what happens when a person leaves the app during a task. Accessibility and device permissions belong in the journey from the beginning. A permission prompt should appear with a clear reason, and a declined permission should lead to a useful alternative where the workflow allows one.
Connect accounts and data without device assumptions
The backend needs to support authentication, account permissions, and the app’s intended data lifecycle. We define how sessions, notifications, uploads, and cached records behave when a device is lost, a user signs out, or the network drops. Provider credentials stay in an appropriate server-side integration, rather than being treated as safe because they are inside an app package. Acceptance checks cover invalid access, repeated submissions, and a delayed backend response. Offline capability is a separate requirement with explicit synchronization and conflict rules.
Treat two platforms as two release responsibilities
An Android release and an iOS release have separate developer accounts, distribution processes, device checks, and review requirements. We agree account ownership, signing, test distribution, privacy information, and the process for supporting current users during updates. Platform SDK or dependency changes may require maintenance after launch. Testing uses the agreed device matrix and realistic journeys, including notification permission changes and interruptions. The handover identifies who manages releases and investigates platform-specific failures, making the operating model clear alongside the shared codebase.
What we can deliver
We agree the requirements and responsibilities before development begins. Your project scope can include:
- A mobile workflow and platform capability review with explicit shared-code and platform-specific implementation decisions.
- A shared application structure and responsive mobile interfaces for the agreed Android and iOS user journeys.
- Scoped backend, authentication, device-feature, and notification connections with clear permission and failure behaviour.
- Device and accessibility acceptance scenarios, release-account ownership, and maintenance and distribution documentation.
Technology choices for your requirements
The stack follows your integrations, operating model, and maintenance needs. These are options to review during discovery, rather than a fixed stack promised for every project.
- A supported shared mobile framework such as React Native, selected after evaluating device and platform requirements.
- TypeScript and reusable interface, validation, and API-access components where the chosen framework supports them.
- Server-side application APIs and supported native integrations, with platform-specific work identified in the project scope.
Planning questions, answered
Can one application serve both Android and iOS?
Yes. A shared framework can support both platforms when its capabilities fit the required workflow. Some features and release tasks remain platform-specific, so we evaluate that work before proposing the application architecture.
Will every feature behave identically on both platforms?
The product can offer consistent journeys, while operating-system capabilities and interaction patterns may differ. We define supported behaviour and alternatives for permissions, notifications, background processing, and other device features instead of assuming identical implementation.
Can a shared app use our existing backend?
Yes, where the API, authentication, permissions, and response behaviour support the mobile workflow. The project can include an integration or backend update if those capabilities are missing, with data ownership and access boundaries made explicit.
Who owns the app store accounts and release process?
Those responsibilities should be agreed before delivery. We plan developer-account access, signing, test distribution, privacy information, and handover around your ownership requirements, while review and provider requirements remain part of the release process.
Tell us what needs to work better.
Share your idea, existing workflow, and the outcome you need. We will help shape a practical starting point.
Start a project conversation ↗Read our website, chatbot, and product planning guides →