iOS is primarily chosen by developers due to its lower development costs, while Android dominates the global market. Android is an open-source platform that runs on a wide variety of devices beyond just smartphones and tablets, allowing for more innovative apps, while iOS only runs on Apple devices. Android can be customized for specialized tasks and allows coding in languages beyond just Java. However, Android's open nature and ability for OEM customization results in device fragmentation, varying performance, and challenges for developers in designing apps to work across different screen sizes and specifications.

1. We know that iOS is the first and foremost choice of most of the software and mobile
developers. The reasons may be various for example it may be high probability of application
development cost. Android dominates almost globally in numbers and can be rightly called as
second position to iOS. These two platforms are completely different mobile platforms with
completely different approaches and philosophies to mobile software development.
Android is an open-source platform which is based on Linux platform which is present among a
legion of devices. They are not limited to smartphones and tablets. Android can also run on TV
sets, cameras, smart watches, laptops and even refrigerators. As compared to iOS which runs on
a very limited number of consumer devices, Android has a wider range of possible use which is
an open platform for many innovative apps some of which would be clearly restricted by Apple's
guidelines.
Android is truly open in every function of the word: it works with a number of instruction set
architectures (such as ARM, x86, MIPS), and can be custom-made and bifurcated to specific
needs and tasks. There are many such firmware replacements for Android devices as
CyanogenMod and other such Android versions as Fire OS. The one which is produced by
Amazon for their popular Kindle Fire tablet range. Users of these tablets are a specific audience
to Amazon and Amazon provides them with a separate application store. There are many ways of
obtaining Android apps on a device either from alternative stores (e.g. Samsung Apps or GetJar),
and other facts stating the openness of the platform.
Android customization can be done for specialized tasks for example it can disable certain native
device functions to make the device securely serve one peculiar task. This is neither simple nor
inexpensive but Android makes it possible. Although the main programming language for
Android is Java Android allows the code written in other languages like C and C++. This means
that millions of lines of code written and tested before by numerous developers can be used for
Android apps.
The flaw to this nature of Android begins with the distinction of devices. Corporations are
permitted to build mobile devices with different performance capabilities, specifications in
general as well as screen sizes and resolutions which lead to fragmentation of devices and
versions.
While Apple's iOS device range is limited to iPhone, iPad and iPod touch Android runs on
various gadget models which provide completely different user experience. Inexpensive Android
devices tend to have limited resources and main drawbacks are weak performance, low-
resolution screens. User experience on high-end Androids differs remarkably. Depending on the
devices a developer wants to build for there is very much opportunity for designers: adjusting UI
for different screen sizes and resolutions. As a result it takes comparably more time to create an
Android app.