Spanish ortography for Android

Spanish ortography app for android description: This app was originally designed to help kids to improve their spanish skills at school.
But it can be used also by spanish language students.
There are three activities: converting units: you are asked to convert quantities between different units for measuring length volume and weight.
You get points until an error occurs.
Accent mark: the app will show you a word without accent mark.
Then you have to press on the vowel in which it should be placed or indicate that there is no accent mark.
Bv.
: The app shows you a word with a missing letter.
Then you have to choose whether it should be placed a b or v.
You can use this app to improve your spanish language skills.
It is also useful for people not so young remember things forgotten.