Transfer applications from iPhone to iPad

Apps are not directly “transferred” between devices. Instead Apps that are both (a) still available for download, and (b) are compatible with the installed version of iOS/iPadOS, are downloaded and installed on new devices from the Apple App Store.

It follows that both devices must be signed-in with the same AppleID - as purchased Apps are forever associated with the AppleID account from which the purchase was made.

If you are setting-up a new iPad, these support pages should get you started with setup - and the methods of transferring your data from an older iPad (or your iPhone) to the new iPad:

Set up your iPhone, iPad or iPod touch – Apple Support

Transfer data from your previous iOS device to your new iPhone, iPad, or iPod touch - Apple Support

Use Quick Start to transfer data to a new iPhone, iPad or iPod touch – Apple Support

If the donor device, from which you are transferring your data precedes iOS/iOS12.4, QuickStart will not be available - but you can use the alternative method.

“Transfer” is rather a misnomer. In reality, your data and setup is merely cloned to the new device. Nothing is moved or removed from the original device.

An alternative is to restore either an iCloud or iTunes backup to the new device:

How to back up your iPhone, iPad and iPod touch – Apple Support

Restore your iPhone, iPad, or iPod touch from a backup - Apple Support