These epublications are in ePub format which can be read on Kobo and other ereaders but not Amazon Kindle.
They can also be read on tablets and smartphones, including Apple products, using an ePub app which are widely available, both free and paid for, in the AppStore and from Google Play.
We chose the ePub format as it is the one used by public libraries for their ebooks and therefore the most widely used.
The individual pdf downloads of meditations can be read on Kindle, most ereaders, tablets and PCs. They have been priced so that buying a full set is no more expensive than buying the paperback edition of the book.