iOS vs. Android app development: Key differences to know
Organizations building mobile apps must weigh iOS vs. Android development differences, including programming languages, tools, device fragmentation and deployment models.
Organizations developing mobile applications must choose between two dominant platforms: Apple’s iOS ecosystem and Google’s Android ecosystem. Each platform offers different programming languages, development environments, distribution models and user expectations.
Understanding the differences between iOS and Android app development helps IT teams select the right platform strategy, control development costs and deliver a better mobile user experience.
To effectively develop an app for iOS or Android, IT teams must understand how the development environments differ.
It's easy to get started in mobile software development -- administrators just have to pick the platform and language that their programmers already know, preferably the one that is free. But that choice doesn't take the cost of tools, the viability of the platform and various other factors into consideration. Which mobile devices are most popular with users? Is the team able to provide sufficient support? What is best for the organization?
Android and iOS both have different style guides. As a result, writing for both requires two teams. Otherwise, the app will have a look and feel that is unfamiliar to at least one user base. Organizations might be able to lock support down to a specific device and OS version for internal apps, but public-facing apps will have much more demanding users. Then there are watches and tablets to consider, along with the costs of training and long-term support.
Several decisions go into mobile app development, from design guidelines and layouts to distribution and monetization strategies. The OS the app caters to affects many of these decisions. Making conscious choices about what platforms to develop on can help ensure a smooth development process.
Key differences between iOS and Android app development
Organizations evaluating mobile platforms often compare how iOS and Android differ across development tools, programming languages, device ecosystems and distribution models. Understanding these differences can help IT teams choose the platform strategy that best aligns with their development resources and target users.
Programming languages
Android development primarily relies on Java and Kotlin, while iOS development uses Swift and Objective-C. Kotlin has become the preferred language for Android development, while Swift is the modern standard for Apple platforms.
Development environment
Android developers typically use Android Studio, Google's official IDE. iOS developers build applications using Xcode, which runs only on macOS.
Device ecosystem
Android devices are manufactured by hundreds of vendors, which leads to device fragmentation and requires testing across many screen sizes and OS versions.
Apple controls both hardware and software for iOS devices, resulting in a more consistent development environment.
App store distribution
Both platforms require store review before apps become publicly available:
Google Play reviews most updates within hours to roughly 24 hours, while entirely new applications typically face a review period of several days.
Apple reviews most submissions within 24 hours, though review can take longer for complex or nonstandard apps.
However, Android developers can distribute apps through third-party stores or direct installation, while Apple primarily distributes apps through the App Store, though alternative marketplace and web-distribution options now exist in some markets.
User interface standards
Android and iOS have different design conventions.
For example:
Android uses a navigation bar and back button
iOS navigation typically relies on hierarchical navigation and tabs
Apps that ignore platform conventions can create friction for users.
When organizations prioritize iOS vs. Android development
Most organizations don't pick a mobile platform based only on technology. The decision usually depends on the target audience, internal development skills and the type of application being built.
In many cases, teams lean toward iOS development first when the application targets North American users or internal enterprise deployments where device environments are more standardized.
Android development is often prioritized when organizations need to support a broader global user base or a wider range of device types and price points.
For public-facing apps, many organizations ultimately support both platforms. In those cases, teams either maintain separate native development efforts or use cross-platform frameworks to share code between environments.
Understanding Google Android app development
The Android OS is free and open source. It comes with the Chrome browser, along with Gmail, Calendar and other Google apps. Hundreds of brands build Android devices, and they need to innovate on both features and price to stay relevant. This device fragmentation also means that organizations have to consider the different screen sizes and OS versions on the Android phones their users might have. With both initial app design and subsequent updates, Android developers must take extra time to ensure compatibility for different devices across their user base.
Because it is open source, developers can also compete to make development environments and compilers for Android. While Android has a strong Java tradition, Android apps do not run on the Java Virtual Machine. Instead, they run on the Android Runtime. Android's free integrated development environment (IDE), Android Studio, supports both Java and Kotlin. The two programming languages are similar, but Kotlin is now Google's preferred language for new Android development, while Java remains widely used across existing enterprise applications.
The idea of ‘write once, run anywhere’ is attractive, but it has a few major drawbacks.
The workflow for Android starts out in much the same way as traditional development. Programmers write code in an IDE and commit it to version control. A continuous integration/continuous delivery tool then builds the code into a package and deploys it. With deployment, the Android app becomes available in the Play Store once Google has reviewed and approved it, which can take a few days. Because Android is open, developers can build and deploy apps independently or on a third-party store. Still, those options lack the discoverability of the main Play Store.
If an IT team finds a bug on Monday and fixes it on Tuesday, the fix will not be live on the Google Play Store until Friday. Unlike a web deployment, which could take minutes, a new app deployment tends to involve more communication and coordination. To mitigate this challenge, it helps to be able to do separate releases for beta testers. This way, teams can keep both a "stable" version in the Play Store and a "latest" version in a special release.
Android development advantages
Android’s open ecosystem gives developers greater flexibility and access to a wide range of devices and deployment options.
Open ecosystem
Multiple distribution options
Broad global device reach
Flexible development tools
Understanding Apple iOS app development
Because Apple is the only manufacturer of an integrated, closed system, it offers richer commercial support, as well as less choice for developers. The main development environment for iOS applications is Xcode, which runs on Apple platforms only. Organizations that live and breathe Microsoft Windows and .NET must purchase Mac computers for their programmers. The other option is to outsource, which will require a support plan when the main development contract ends.
While it is possible to program for Kotlin on iOS, this is a cross-platform mobile development approach, which has some drawbacks. Swift has become the standard programming language for iOS, which Apple touts as intuitive and easy to learn. Perhaps more importantly, Swift places an emphasis on code safety. This prevents the common C and C++ programming mistakes with object references, null pointers and out-of-bounds index references.
Developing for iOS in the Apple ecosystem offers several advantages. For example, launching an app on an Apple Watch is as simple as clicking "Show App on Apple Watch" from its paired iPhone. Xcode also supports VisionOS, the operating system for Apple's VR headset. SwiftUI, the UI extension for Swift, runs on all the platforms, which means developers can code for the Apple Watch, the iPhone, the iPad and the Vision Pro in the same environment.
Apple reports that 90% of submissions are reviewed in less than 24 hours on average, though review can take longer for complex or nonstandard apps, especially those requesting numerous permissions. Apple's beta testing tool, which lets users try versions of software before they reach the App Store, is called TestFlight. Again, Android offers choices, while Apple offers one straightforward, prechosen experience.
Advantages of the Apple ecosystem
Developing within Apple’s ecosystem offers several advantages because the company controls both the hardware and software environment.
Consistent hardware and OS environment
Strong commercial support
Integrated tools such as Xcode and SwiftUI
Unified ecosystem across iPhone, iPad, Apple Watch and Vision Pro
Alternatives to iOS or Android application development
Some organizations choose alternatives to native development to reduce development complexity or maintain a single codebase across platforms. Three alternatives to consider are cross-platform mobile development, hybrid applications and progressive web applications (PWAs).
Cross-platform mobile development involves creating source code in a single programming platform, then having that platform build from the single set of source code across different OSes. Examples of cross-platform development tools include React Native and Flutter. React Native is a mobile and web app framework where programmers write code using a JavaScript library. Flutter is an open source framework where programmers write code in Dart, which compiles down to target iOS, Android, web, Mac, PC or even Linux applications. Microsoft also offers the .NET toolchain to write mobile apps in C# for iOS or Android.
Another option is to develop a hybrid app. Hybrid apps combine a traditional application with an embedded, possibly full-sized web browser, pointing to a website. This cross between native and web development enables programmers to write in HTML5, CSS and JavaScript, like they would with a web app. Users then download the application from an app store, like they would with a native app. Hybrid apps can also use some device-specific resources via internal APIs.
Developers can also build a PWA, or a website that acts as if it is a mobile app. Similar to a hybrid app, a PWA uses web technologies such as HTML and JavaScript. To provide a suitable UX for mobile users, it will resize to fit the device's screen. It can also appear on the device's home screen, send push notifications and work offline. The user feels like they are double-clicking a mobile app, but the programmer only has to write one webpage that works for both desktop and mobile. Unlike a hybrid app, though, a PWA doesn't use OS-specific APIs and wouldn't be available on an app store, instead running in a browser.
Both hybrid apps and PWAs can create challenges around security and consistency for login. Most mobile apps enable cached auto-login or at least the use of Face ID. Making the hybrid web experience seamless can require extra precautions, such as using Apple's Keychain services or the AccountManager functionality in the Android API.
The idea of "write once, run anywhere" is attractive, but it has a few major drawbacks. First, the user interface standards between iOS and Android are different. Android typically uses a navigation bar and back button, while iOS relies on hierarchical navigation and tabs. Android typically includes a system-level back button or gesture, while iOS relies on navigation controls within the application interface. Programmers will need to code to one standard or the other. The users that are left behind might experience friction and discomfort. In addition, cross-compiled frameworks are inevitably written by an external provider, addressing at least two moving targets. They're designed to help an organization take shortcuts.
One thing to consider for cross-platform support is what that software will do. It might, for example, call other APIs for login, search and other commands. In that case, the app could mostly be a user interface, glue code and display code. If teams can create the APIs and UI design once, it might not be too much effort to write the UI and API client code twice. This does mean adding two sets of programming knowledge to the organization. However, in the age of online training and approachable tool sets, that might be a solvable problem.
iOS vs. Android app development pros and cons
Both platforms offer advantages and tradeoffs for development teams. iOS provides a tightly controlled ecosystem with consistent hardware and tools, while Android offers a more open platform with broader device reach and distribution flexibility. Understanding the strengths and limitations of each approach can help organizations determine which platform best fits their development resources and user base.
Pros and cons of iOS app development
iOS development offers a controlled ecosystem with consistent hardware and strong commercial support. However, the closed platform also introduces limitations organizations must consider.
Pros
Consistent hardware and OS ecosystem
Easier device testing environment
Strong monetization opportunities
Unified developer tools
Cons
Development requires macOS hardware
Limited distribution options
Stricter app review process
Pros and cons of Android app development
Android development provides flexibility and a broad device ecosystem, but the platform’s openness can create additional complexity for development and testing.
Pros
Open source platform
Flexible distribution options
Large global user base
Wide range of devices and price points
Cons
Device fragmentation
More complex testing requirements
Inconsistent hardware capabilities
How to choose a development approach
To find the right approach, admins should evaluate the demographics of their customer base and the needs of their IT team. According to StatCounter, Android holds roughly two-thirds of the global mobile OS market share, making the platform a strong option for organizations with a large international user base. Market share varies by region, however. In the U.S., iOS accounts for about 60% of the market, while Android holds roughly 40%.
Large Java shops might want to start with Android, with its tradition and support of Java. Likewise, a .NET shop might also consider Microsoft's cross-platform toolchain to build mobile apps in C#, though some Apple platforms such as WatchOS or VisionOS still require native development tools. Marketing and creative agencies might have Apple devices on every desk or find it easier to get started with Xcode and iOS.
Choosing between iOS and Android development ultimately requires both a business and technical evaluation. Organizations should consider their target user demographics, the development tools and programming languages their teams already support, and the long-term maintenance requirements of each platform.
In many cases, organizations prioritize one platform based on their audience or internal expertise. Others adopt cross-platform frameworks or progressive web applications to reach users across devices while managing development complexity. By evaluating both the technical tradeoffs and the business goals for the application, IT teams can select a mobile development approach that supports long-term success.
Editor’s note: This article was updated to reflect current mobile development tools and platform differences, and to expand coverage of key comparisons between iOS and Android app development.
Author's note: The author would like to thank Michelle Bernardon and Rob Vander Sloot for their peer review and feedback. They made the article better.
Matt Heusser is managing director at Excelon Development, where he recruits, trains and conducts software testing and development.
