The Making of Soundproof, part 3: Unlocking features with In-App Purchases
During the process of making Soundproof, we had to consider what the business model would be. I wrote [some early thoughts about pricing](http://transition.io/is-unlock-everything-a-mistake/) and talked about some [issues with implementing upgrade pricing with In-App Purchases](http://transition.io/my-first-public-ios-app-is-now-available/) previously. Here, we’ll take a brief look at the experience of implementing In-App Purchases and the user experience.
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