Productivity app Clear is one of the most talked about to-do apps of the last year, and has just released an update that brings features like iCloud storage for to-do lists, easy quotation sharing on Facebook and Twitter, Clear for Mac OS, list pasting abilities, and an API that will let other apps send lists to Clear.

In a more interesting blog post over at TouchArcade, however, it seems as if the developers of Clear have hidden some pretty cool gamification features as well. In addition to the achievements already present in Clear, like unlocking a special theme for completing 100 tasks, there are some extra unlocks that only happen if you have other apps installed.

Now here’s the cool part, the part that reveals Clear’s affinity for games. Today’s update has within it the seeds of three other unlocks. Each one ties into a game: The Heist, Temple Run and Bumpy Road. Those games will need to update before this works (The Heist’s update should come mid-week, and the others are on the way), but once they do we’ll get new themes in Clear for each of those games we have installed.

This is the kind of innovation that made Clear such a huge hit when it released. Well, that and the amazing user interface. Clear is available in the App Store now for $1.99. Check it out if this intrigues you as much as it does us.

via: Touch Arcade