Hi Toastyboi,
Welcome to Apple Support Communities. We understand that you would like to use an app on your iPad that you have previously used on your iPhone and transfer your data.
If you are already signed in to your Apple ID on your iPad, you can find and redownload apps that you have previously purchased. Check out Redownload apps and games from Apple. Then, depending on which app you are downloading, you may be able to sign in with your account details to get your data. If you find that not to be the case, let us know which app you are trying to access.
Take care.