MOBI is an ebook format that offers the most compatibility with Kindle Paperwhite and Kindle Oasis devices. While Amazon has several proprietary formats (including AZW/3 and KF8/X), the MOBI format provides better compatibility across device generations.

Please note: while it is possible to read Prismatext books on iOS, Android, and Fire phones and tablets using the Kindle application, we do not recommend doing so due to its treatment of footnotes.