Gosto que posso avaliar meu entendimento e que ele mostrará os cartões menos compreendidos com mais frequência e que não passa por todo o baralho de uma vez.

- User friendly - Always easy to access the iPhone application; I could use this to study any time I had downtime - Easy to upload images - Easy to share with others - Liked the ability to rank how well I knew things so I could see them more or less frequently

Finally has an android app. Very useful.