// app development
Flutter App Development for Android & iOS
Build a mobile product for Android and iOS without treating every shared feature as two separate projects.
DroidRooter offers Flutter application development for new products, business apps and existing Flutter codebases. We scope what can be shared, identify what needs platform-specific work and include the testing required for the platforms you plan to ship.
Shared development, with the platform details accounted for
Flutter uses Dart for application development and supports a shared approach across Android and iOS. That can be useful when both versions of a product have similar screens, data and business rules.
It does not mean that every integration behaves identically on both platforms. Permissions, notifications, sign-in, hardware access and release preparation still need attention. The proposal should account for those differences instead of describing iOS as a free extra.
Our starting point is the product: who needs it, which platforms matter and which features are least certain.
Flutter services we can scope
A new Flutter application
Turn a defined user journey into an application with a coherent screen structure, data flow and release plan. Suitable briefs can include customer portals, booking workflows, internal business tools or a focused first version of a new product.
These are examples of possible applications, not a list of client projects or prebuilt templates.
Existing-app features and maintenance
Extend an application that already uses Flutter, investigate broken behaviour or address a release that is blocked by build and dependency issues. We review the current code before proposing an upgrade or rewrite.
APIs and backend connections
Connect the app to the services it needs, including authenticated data, file uploads and relevant vendor SDKs. Backend availability, documentation and third-party costs are considered separately from the mobile interface.
Native Android plugins and integrations
Some features require an Android API or a vendor library that does not have a suitable Flutter package. Flutter can communicate with Kotlin or Java through platform channels, allowing the native integration to sit behind a shared application interface.
This is a particularly useful point of contact between native Android development and Flutter. The matching iOS behaviour must still be implemented or explicitly excluded from the scope.
What is shared, and what still needs separate work?
| Area | Planning approach |
|---|---|
| Main screens and application rules | Share where it makes sense, adapting the experience when platform expectations differ. |
| API clients and data handling | Reuse common logic, with explicit handling for connectivity and authentication failures. |
| Permissions and notifications | Check the requirements and user experience on each target platform. |
| Hardware and vendor SDKs | Verify plugin support; scope native integrations when needed. |
| Testing | Run appropriate checks on Android and iOS, not only a single emulator. |
| Store release | Prepare each platform's build, signing, account access and submission requirements. |
A shared codebase is a development approach, not a promise of complete feature parity without additional work.
Flutter or native Kotlin?
Flutter is worth evaluating when Android and iOS are both important and most of the product can share a common structure. It can also be a sensible choice for an existing Flutter app that needs further development.
Native Kotlin deserves a close look when the product is Android-only or its most important functionality depends heavily on Android-specific APIs, services or device behaviour.
There is also a middle ground: Flutter for the shared product, with Kotlin for a defined Android integration. We can review that option before committing to a wholesale framework change.
Not sure which way to go? Describe the users, the devices and the difficult features in the enquiry. Choosing a framework is not a prerequisite for contacting us.
Test the product beyond its first successful run
A release plan should include the user journeys that determine whether the product works: signing in, submitting data, reopening the app and recovering from a lost connection.
Flutter supports unit, widget and integration testing. The appropriate mix depends on the project, and platform integrations need checks against their actual environment. A passing test suite does not replace checking real-device behaviour where hardware or operating-system differences matter.
For iOS delivery, the plan must also account for the macOS/Xcode build environment, signing, the client's developer account and the store review process. Those are project dependencies, not reasons to promise identical release dates on both stores.
What determines the Flutter development estimate?
The number of platforms is only one factor. Complex hardware, a poorly documented backend, substantial native work or an unfinished codebase can change the effort involved.
We separate the essential first release from optional features, third-party service charges and ongoing maintenance. Flutter may reduce duplicated work, but no fixed saving is promised before the requirements are understood.
Frequently asked questions
Can you develop for Android and iOS together?
Yes. Include both platforms in the brief so each one's integrations, supported devices, testing and release responsibilities are explicitly scoped.
Can we launch Android first and add iOS later?
Yes, but mention that plan at the beginning. Android-only dependencies and interface decisions can affect the work needed for a later iOS release.
Can Flutter use Bluetooth, NFC or a custom SDK?
Potentially. We need to check platform support, available plugins, permissions and the hardware itself. A native integration may be needed, and the same feature may have different constraints on Android and iOS.
Can you take over an unfinished Flutter app?
Yes, subject to code review and permission to access the project. We first check whether it builds, how it is structured and what prevents the next release.
Is Flutter always cheaper than native development?
No. Shared work can help, but custom integrations, platform differences and testing still affect the estimate. We recommend an approach after reviewing the product rather than promising a percentage saving.
Can the same project include web or desktop?
Flutter supports additional platforms, but this service is focused on mobile delivery. A web or desktop version needs its own requirements and estimate; it is not automatically included in an Android and iOS project.
Start with the app you need, not a framework debate
Tell us what the application must do, which platforms matter and whether you already have designs or code.