Native App
A native app is a program written specifically for a particular operating system such as Android or iOS and runs directly on the device. It is considered fast and can use all of the device's features, but must be developed separately for each system.
An operating system always runs in the background on a smartphone: the basic software that controls the device. Apple calls it iOS, most other manufacturers call it Android. A native app is a program written specifically for one of these systems. You download it from an app store, after which it sits permanently on the device and runs there directly. The counterpart is a page you open in a browser that resides on a remote computer. The word “native” here means something like “written in the device’s mother tongue.”
Why companies still develop twice
A native app has to be built separately for each system. For Android it’s usually written in the programming languages Kotlin or Java, for iOS in Swift. That means two teams, two versions, double the maintenance. Yet almost all major providers do it this way.
The reason is speed and access. A native app responds without noticeable delay because it doesn’t have to wait for an internet connection. It’s also allowed to access all of the device’s components: camera, microphone, location, fingerprint sensor, notifications. A website can’t reach much of this at all, or only in a limited way.
There’s also an economic factor. Only through Apple’s and Google's app stores can you reach millions of users in one place. However, these stores take a commission on purchases made within the app, often around 15 to 30 percent. This is precisely why there have been several lawsuits and new EU rules in recent years.
From source code to a file on the phone
Developers first write the source code, i.e., the instructions in a programming language. A translation program, the compiler, converts this text into machine code. Machine code is the form that the phone’s processor understands directly. Because this step already happens before delivery, the device doesn’t need to translate anything at startup. This is the main reason for the high speed.
The result is an installation file — an APK on Android, an IPA on Apple devices. It contains the code, images, sounds, and a list of permissions. This file is checked by the respective store before it appears in the listing. At Apple, this review usually takes one to two days.
A common misconception: native app doesn’t mean offline. Instagram or WhatsApp are native apps and still need the internet for content. “Native” only describes how the program is built, not where the data comes from.
The difference from web apps and cross-platform
In everyday life, you constantly use both side by side. The banking app and the camera app are native. An online timetable you open in a browser is a web app: it runs in Chrome or Safari and doesn’t need to be installed. Web apps are cheaper, because one version suffices for all devices, but they often feel more sluggish.
In between lie cross-platform tools like Flutter or React Native. With these, you write the code once and generate versions for Android and iOS from it. This saves a lot of work, but doesn’t always reach the full speed of true native apps. Many companies therefore choose a middle path.
In business news, the term usually comes up in disputes over platform power. When reports cover store fees, alternative app stores, or the EU’s Digital Markets Act, it’s always about native apps. Because only they depend on these distribution channels.