iPads are capable of doing wonderful things. For example, they can entertain cats. They can stream Netflix. And they let us read Game of Thrones in relative secrecy. In other words, they’re great for passive entertainment. But when it comes to work-related tasks, like data entry, Apple’s tablet tends to fall short of the average laptop. Josh Leong, the CEO and creator of a new spreadsheet app called Grid, is one of many young app developers hoping to change that.