To download the Synchrony Bank mobile app, you need to visit either the Apple App Store if you are using an iOS device or the Google Play Store if you are using an Android device. In the app store, you can search for "Synchrony Bank" to locate the official app. Once you find it, you can click on the download or install button to begin the installation process. After the app has downloaded, you can open it and log in with your credentials. If you do not have an account yet, you may also find options to create one directly within the app. For more detailed information, including any necessary requirements for compatibility, it may be helpful to check the official website of Synchrony Bank. This will provide you with the most current details regarding the app and its features.