for iOS & iPadOS
Reading companion that knows how long until you're finished with a book.
You just read at your own pace. And use that info strategically.
Instead of page numbers, feel free to enter whichever number your digital book displays (i.e. locations).
An easy way to circumvent this is to set your percentage-only ebook to 100 pages total.
Your data is synced to your iCloud, and will sync back to your new device when you log in with the same iCloud account.