navionics boating marine and lakes app

Just check the app in the App Store - it will tell you right there if it works on your iPad and what the minimum specs needed are. Or check on that App developers web site for whatever their system requirements are.

It is the same.

Compatible with iOS 9 or higher/greater means that it will work with whatever the current OS is iOS or iPadOS, which is still iOS!

Another thing to check is the date of the last update, which was very recent.

This indicates compatibility with iOS 9 all the way to the current/latest iPadOS versions.

Just checked the app.

Yes, a 7th gen iPad will run this app.