In this presentation we share our experience of a very interesting and challenging project, in which we developed a mobile couponing app for iPhone with the user-centered design method.
On one hand we show what we learned in the usability assessments about knowledge, mental models, expectations and users’ behaviour. Especially surprising were some insights on the usability of standard iPhone patterns recommended in the iOS human interface guidelines as well as how some users use their iPhone.
On the other hand, we give hands on tips for successful testing of mobile devices’ apps:
• How to build testable prototypes for mobile devices
• How to simulate an app with an HTML prototype
• Test setup, observation and recording on mobile devices
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