Easily readable English translations are not easily available.
Based on wonderful work of Shahriar Shahriari, we present to you a completely free English Hafez poetry app. It does not include all the poems, but for now that's the best we could do :)
Please visit http://www.sattor.com/english/ghazaliatofhafiz.htm for the original source of the translations.
Enjoy and please do leave a comment if you liked it! :)