Don't have modpoints, would upvote, because I use this app myself.
It appears to work almost like a CUPS printer driver installed on the android phone/tablet. It's worth the few dollars/euros, and the free version is good enough if you don't print more than three documents per day.
you will have to use it until the end of the month
Not quite true, the 1 GB option is valid for 30 days, and the thirty day period can start and end on any day of the month.
This is their price list, sorry, German only:
Price List
In my case, activating the 1 GB option for my existing simyo prepaid SIM card took about a day.
There are no data that cannot be plotted on a straight line if the axis are chosen correctly.
