When I bought my first iPhone almost three months ago, I also acquired a new obsession with the role of playfulness in user experience design. Recently, a fortunate coincidence occurred that has allowed me to explore this new obsession deeply. Two iPhone developers each released new measurement unit conversion apps within a week of each other and also documented their design processes on the Web. As if that weren’t enough, both of these applications, taptaptap’s Convert and Tapbots’ Convertbot, were designed with the idea of delightful experience in mind. The two apps are very different despite all these similarities, and those differences got me thinking about the relationship between playfulness and usability in creating delightful interactions. I succumbed fully to my obsession and roped in some iPhone-using coworkers to participate in an informal comparative usability test. What I learned, led me to compelling insights about the relationship between usability and playfulness.
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