The Andeanie Spelling Test app, Andeanie Maths Test app and Tell the Time apps collect no personal data of any users.
However, as of iPadOS 14.5, for advertisers to serve the best ads, you will be requested if the app can ‘track’ you. This requires applications to ask permission if they want to track your activity across other companies’ apps and websites. You will receive an on screen prompt, and you can either allow this tracking, or you can decline.
If you do decline this option, no user specific data will leave the app or your device.