True multitasking was introduced only with the iOS 7 version. Before that apps would simply be in the background, not running actively.
The world's first app store was built on the NeXTSTEP platform, the same on which the World Wide Web was developed by Sir Tim Berners-Lee. Electronic AppWrapper created by Paget Press, Inc. and released in 1991 was the world's first commercial electronic software distribution system to manage encryption and provide digital rights for applications, music and media. In other words, it was the world's first app store! [more...]