I do not want to have to purchase a domain but would like to submit an app I have developed to the App Store. I was wondering if the app bundle ID had to include a reverse domain owned by you (the developer) or if just any unique string would work. I have tried looking on google etc. but there is no obvious answer. Alternatively, if the bundle ID did have to be a reverse domain, would websiteName.weebly.com be written as com.weebly.websiteName or is that not an option.
Thanks.
The domain you need to put for the app like com.company.awesomeapp is the bundle identifier for the app. You do not need to have the company.com domain.
A bundle ID or bundle identifier uniquely identifies an application in Apple's ecosystem. This means that no two applications can have the same bundle identifier. To avoid conflicts, Apple encourages developers to use reverse domain name notation for choosing an application's bundle identifier.
If you want more information, read What Are App IDs and Bundle Identifiers.