This is truly a great 'App' - it Enhances the content of the National Geographic Monthly Magazine tremendously. I just can recommend this program, with maybe only one slight disadvantage: the electronic content is large and Comprises about 200-300 MB for each edition Which I find is quite a lot. HOWEVER, so it shows indeed the extra videos etc are of high quality and theywill be on your machine without the need of any additional streaming When You access the content. You should know though indeed you must be a subscriber of the NDA (I read the monthly US "original" edition - No Clue Whether this will work with local (eg German) prints) to be able to take advantage of the program. Once you have signed in with your account data (Which I remember was easy & fast) you can download the current and past NG magazines Onto the Kindle - then the electronic version will complement the printed version and extent in an amazing way - and at NO extra costs !!! Many thanks should go to the National Geographic Society for this awesome product! (And it is fully free!)