iPad: The split view multitasking feature in iOS 9 is great, but you can't run two instances of the same app. With something like a web browser, this is kind of a bummer. Sidefari makes that possible.
Sidefari essentially opens up a second version of Safari so you can run two instances side-by-side. If you work in a field where having two browser windows open is a necessity, this makes working from the iPad a ton easier.
Sidefari ($1.49) [iTunes App Store]