Sportsball is serious business, or so I'm told. The Coach's Eye app has been a popular way to do slow-motion analysis of swings, kicks, and other sports-type motions, and now you can test it out for the reasonable price of free. The old paid version is no longer supported – it's all about the free app, but the developer isn't forgetting about those paying customers.
The new free Coach's Eye app has the same functionality as the original $4.99 app, but you access it through an in-app purchase. The app includes only a few functions without unlocking anything, but you can choose individual features for $0.99 each (you save money with the single $4.99 unlock, though). The app lets you capture or import video, then play it back in slow motion with all sorts of annotation tools. You can also record comments over the annotation for players to review later.
The legacy version of the app remains in Google Play, but the app's price has been set to $50 to prevent anyone from buying it. This is being done so those with a license will be able to access it, but not for the features – it won't be updated anymore. The paid app will now act as an unlocker for premium content in the free app. Just keep it installed, and the free app will give up all the features. It seems like this solution should make everyone happy.