While there are many third-party iPhone App Stores like Cydia around, the problem with them is that they all require jailbreaking of iPhone, which even though has gone 100 percent legal isn't something which every iPhone user will do. Comes in OpenAppMkt, a new web-based third-party app store for all iOS based devices which consists of apps, completely written in HTML format. OpenAppMkt runs in browser and installation of apps simply require a simple tap on: "add to home" button.