Your favorite iOS app Intelli Flashcards is greatly undervalued. You pay just 3€ and get a possibility to have an unlimited amount of flash cards right on your iPhone. If you ever wondered how you could support the developer, here is an easy way.
Do you use Amazon Prime? I do, and I enjoy the next-day delivery, unlimited movies and music. This is a great deal for 50€ a year! For those who buy a lot on Amazon it is a must.
Or if you enjoy reading books, why not giving a shot to audiobooks? They have one big difference with conventional books: you can listen to them while being busy with something else. Or while going somewhere or taking a walk. A great thing to get information from the books without actually having to read when it's not very handy.
I use the Amazons service Audible a lot and recommend it to everyone who enjoys having good books. Sign up for a free trial, and support the developer of Intelli Flashcards. And besides of that, enjoy an HQ audiobook every month from Audible!