Gift for my sister: Which notes app with one time purchase for uni/college

Hello, wenn i was still in uni I bought Notability back then. When I dropped out I never really used it again. I shared the app with my sister for school, but Notability closed the family share option a few months ago.

I looked into Goodnotes and Notability, but both are subscription only.

I like to gift useful stuff. My Sister starts college next year so i would like to gift her a notes app she can use through all her years in uni.

Can you recommend some apps? Back when I was in Uni there was only Notbility and Goodnotes, both OTP. I know dou could also use OneNote (but I guess it is still ugly and unfriendly to use on iPad)