The name you select for your app is perhaps one of the most important aspects to marketing your app and can distinguish your app on the App Store. Here are a few things to keep in mind when naming your app or changing the name of your app.
Creating a Memorable App Name. A short, concise, and memorable name will leave an impression on potential customers. Let your app name draw attention and use the marketing description to provide the features. Be sure the name you submit in iTunes Connect matches the name within your app. Inconsistent naming of your app can lead to customer confusion and could affect user experience and the quality of reviews submitted for your app.
Changing the Name of Your App. You can change the name of your existing app only when submitting an update of your app binary. If you submit an app name which is already in use within the same geography in which your app is sold, you will be prompted to enter another name.