I'm adding another answer in case I misunderstood you:
You can make a backup of your iOS device with iTunes to your computer (Mac or PC) and browse it, but from googling around it appears that you'll need an app to be able to extract anything from it.
I've found this article ("Exploring the iPhone Backup made by iTunes"), that identifies five categories of data inside of it:
- SQLite3 database files;
- Plain text plist files;
- Binary plist files;
- Multimedia and text files.
- Non-standard data file
Maybe some of the data your looking for is stored as multimedia files and is easily extracted.
If that is not the case, this answer talks about iExplorer being able to browse the phone itself; there's this other app that claims to do the same for free (on the backup, apparently).
I haven't tried any of them, so I can't vouch for them.
I've just downloaded and tried iFunbox, a free tool that lets you browse iOS devices as if they were external disks. I don't have Udemy installed but it seems very likely that if there is anything usable inside the app you will be able to copy it to your Mac with it.