Native Android and iOS Application Development
A native app built specifically for Android in Kotlin or for iOS in Swift, for when a cross-platform build is not enough. GullySystem builds and publishes it under your own store accounts when platform performance and access matter most.
Overview
Native development means writing the Android application in Kotlin and, separately, the iOS application in Swift, each using the platform's own tools rather than a single shared codebase. It costs more to build and maintain two versions, so it is chosen deliberately, for the cases where that extra cost buys something a cross-platform build genuinely cannot.
When Native Is Worth the Extra Cost
Heavy Camera or Sensor Use
Barcode and document scanning, augmented reality or continuous sensor readings that need direct, low-level access to the device.
Demanding Graphics or Performance
Applications with intensive animation, video processing or real-time computation where every millisecond of platform overhead matters.
Deep Platform Integration
Features tied closely to Android or iOS specifically — widgets, background services, or the latest OS capability before cross-platform tooling supports it.
A Long-Lived, Platform-Specific Product
A consumer app expected to compete on polish and speed for years, where native performance is part of what users notice.
Publishing and Store Requirements
Each store has its own review process, technical requirements and account setup. We handle the app signing, store listing content, screenshots and submission, and register everything under your own Google Play Console and Apple Developer accounts so the listing belongs to your business from day one.
Native or React Native and Flutter?
This is a deliberate trade-off, not a default. React Native and Flutter, covered on their own page, build both platforms from one codebase at a lower cost, and suit most business applications. Native is worth the extra investment specifically when a feature genuinely depends on the platform's own hardware access or performance ceiling.
Frequently asked questions
Is native development necessary for our app, or would React Native or Flutter do?
Most business apps — field tools, dealer apps, customer portals — run well on React Native or Flutter, covered separately, at a lower build and maintenance cost. Native is worth it specifically when a feature needs deep hardware access, top-end graphics performance, or the very latest platform capability.
Can we start cross-platform and move to native later?
Yes, and it is a common path. Many businesses launch on React Native or Flutter to reach the market faster, then move a specific, performance-critical screen or module to native once usage and requirements justify the extra investment.
What drives the cost of a native build?
Building for one platform versus both, how much of the app depends on device-specific hardware or APIs, and how much design and testing effort each platform's guidelines demand, since Android and iOS reviewers expect different conventions.
What decides the timeline on a native build?
Two codebases generally take longer than one shared codebase for the same feature set, plus each platform's own app store review process, which sits outside our control once a build is submitted.
Do you handle app store approval and rejections?
Yes. We prepare the submission to each store's guidelines, respond to review feedback, and resubmit where a change is required, so a rejection is handled as part of the process rather than left for you to manage.
Who owns the app once it is live?
You do. The source code for both the Android and iOS builds, along with the store accounts and listings, belong to your business.
What do we need to have ready before development starts?
Confirmation of which platforms to target, the specific features that need native performance or device access, and active developer accounts with Google and Apple, or authorisation to create them.
Tell us what you need.
Send a short brief and one of our engineers will come back to you — usually the same day.
- No obligation
- We reply the same working day
- Your details stay private