The app offers powerful a search function, onboard handwriting recognition, and much more.
You can use these features to annotate and mark up your imported documents. The app also syncs with iCloud and third-party storage so that you can keep your notes with you at all times.
Of all the apps on our list, GoodNotes is the only one that doesn’t offer a free trial or subscription plan. It’s a one-time purchase, and you won’t know if you like it until you buy it (but you probably will).