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Getting started with React Native apps can be really hard work.

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It wasn't that hard with expo and

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indeed generally, expo makes working with React Native pretty simple and fun but it's important to understand

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that React Native is not about writing Javascript once and running it everywhere, it's instead about

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learning React Native once and then write code that is flexible regarding the platform it's running

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on. For example and you will see that throughout the course, there aren't that many components React Native

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ships with that would automatically adapt the way they look to the underlying platform, you as a developer

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instead have to find out on which platform your code is running and then adjust your styles to that

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platform to get a look that fits the platform or maybe even adjust your logic to that platform.

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The same for orientation or device size changes, you need to write code that is flexible, you will learn

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all about that in this course but you will see that writing React Native code is not about writing code

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once but instead, you will have to add some if checks to find out on which platform you're running, to

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adjust the look and feel of your app based on the platform and device size your app runs on.

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So to sum it up, you have no or very little cross-platform styling of components, most components that

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are built into React Native

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don't come with a lot of styling attached to them,

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you have to take care about styling instead and you only have a basic set of pre-built components anyways,

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don't expect a vast amount of pre-built components.

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If you worked with other alternatives like Flutter or Ionic, you're used to having a bunch of components

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which are prestyled and give you a lot of awesome functionality out of the box. React Native is much

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more barebone, you got some basic components which you need but then all components that would be a

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bit more complex are components you will have to build on your own based on these primitives you're

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given and indeed, you will see these primitives you're getting are actually all you need

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but again we're back to you will need to combine them manually and style them manually and that's something

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other alternatives sometimes do for you, for React Native,

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you have to do it on your own.

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Also as I just mentioned, for creating responsive designs where your app looks good on different device

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sizes and different device orientations, you don't really have tools that help you with that,

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you will have to write code that is flexible, that checks the available device size and that then automatically

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adjusts.

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So there is a lot of manual work to be done by you

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as you can tell

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but that also gives you a lot of power

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and in this course, you will get all the knowledge you need to master this and build truly amazing React

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Native applications.