Final answer:
To make an app for both iPhone and Android, you can use cross-platform development frameworks like React Native or Flutter. These frameworks allow you to write code once and deploy it on both platforms.
Step-by-step explanation:
To make an app for both iPhone and Android, you can use a cross-platform development framework such as React Native or Flutter. These frameworks allow you to write code once and deploy it on both platforms. With React Native, you can write the app using JavaScript and use its UI components to build a native-like app. Flutter, on the other hand, uses Dart programming language and provides its own set of UI widgets.
Both frameworks have their own advantages and considerations, so you can choose the one that best suits your needs. Additionally, you will need to set up the development environment for each platform, including Xcode for iPhone and Android Studio for Android. You can refer to the official documentation and online tutorials for more detailed instructions on developing apps using these frameworks.