No matter how complex it is, if you enter the interior angles and side lengths correctly, Polygon Mobile App will calculate the area and perimeter of a polygon. Regular/irregular, concave/convex polygons etc...
Web Archive allows you to save web pages that interest you while surfing the Internet. So you can create your own web archive. Also you can write a name and a description to remind you of the web page. And you have to enter a new tag or select in the list.
