Este é um ótimo aplicativo para você aprender as funções do Excel
This app you will find step by step tutorials on the most useful and most used functions in Excel. The function tutorials are organized according to the headings found under the Formulas tab in Excel.
* Feature:
+ The interface simple
+ The small capacity, suitable with many smart device nowadays
+ This app is free
+ Reserved for Android operating system.
+ The sufficient content, clear