Giglad https://deltarray.com/ is arranger software that has been out some time (Currently V5) but if you look at the specs required (It runs on Mac or Windows) only the iPad pro would be able to run it, and even then it would require an upgrade to at least 1TB storage to get the increased Ram that is needed, which means you are talking about £1800 and very few youngsters would pay that.

You cant just copy and paste a hardware arranger software to a computer/iPad as it is unique to each manufactures hardware, so would require serious re-coding to get it to work on a computer/iPad, thus the cost of the app would need to be high for them to make any money. (Again kids are not going to pay that)

In the future when technology improves and prices drop then yes, iPads will be fine, but were still some way off that time. (The software you see for iPad is pretty basic compared to the computer versions and arranger coding is not basic)

Bill