Text grabber not working with iOS 7.0.6 on iPhone5

hello, I'm Neil from India,
I purchased text grabber on 4th of march 2014,
however I'm not happy with the result that I'm getting from this app.
I'm getting an error [failed to auto focus] while scanning any document.
For your information my screen curtain is off & brightness is set to 50%.
are there any steps which I am missing? am I supposed to make any changes in settings or anywhere else?
Kindly guide me for the same.
any help will be appreciated.
Thanks in advance


text grabber

Make sure you enable the recognition languages so the voiceover feature in text grabber will work.

re text grabber

yes, I have already enabled that option. Sometimes it works, most of the times it says, fail to autofocus.