With a Kindle, you can only read eBooks that you have purchased from Amazon, or that do not have a copy protection, and can therefore be converted to the required format.
We use the ePub format and a copy protection from Adobe which is a european standard. Our eBooks are therefore compatible with all other eReaders on the market.
Kindle Fire Tablet
Likewise the use of the Onleihe with a Kindle-Fire Tablet is not without difficulty, since you can not install the Onleihe app. Read here on how you can use the Onleihe with a Kindle Fire Tablet.