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App design is a thorny problem for most people. This is doubly true on mobile devices, where maintaining a sleek, user-friendly interface is trickier than it looks. Thankfully, there is a wealth of information on this subject, making it just a bit easier to decide on what an app should look like.

First is the  iPhone and Android site http://www.mobile-patterns.com/. Consisting of a gallery of the most successful apps (including Twitter, Instagram, Facebook etc), this site contains a list of categories that may be giving you problems. This list contains a handy menu of the most common features in apps, such as Lists, Camera Controllers and the like. Each page contains images of examples in practice, providing guidance on how to achieve a similar effect in apps currently being worked on.

Second is the iPhone only site http://pttrns.com/, which provides a similar service to the above site, albeit focused on iPhone. Apart from the magnifying glass enabling your cursor to see up close to the images, it’s all pretty similar to the site above. Where it differs though is selecting an image that you like doesn’t just display the image in a fuller size. Instead it takes you to all images listed on the site under the same app, along with a link to the iTunes website and ratings for the app.

Apart from the above sites, there exists a host of other sites in a similar vein. These include dribbble.com, www.lovelyui.com and www.androidpatterns.com. Sadly, these are all related to Android and iPhone, and I have been unable to find a site for BlackBerry devices. Thankfully, the BlackBerry site contains tips on how to create a standardised UI across BlackBerry devices. How to implement these features in code is a whole different problem. Hopefully I will address that in a future update!

Johann Van den Bergh

Mobile Software Developer

Cobi Interactive