Sixmo - Favorite Puzzle is a free iPhone app developed by Dorothea Keller in the Utilities & Tools category. The game involves clicking on pairs of identical patterns to complete puzzles. Upon finishing all patterns, users can unlock details of the picture and collect it. Please note that Sixmo utilizes the TMDB API for content, but lacks official endorsement from TMDB. For more information, refer to the TMDB API terms of use.

Sixmo also offers a subscription service with prices ranging from $4.99 per month to $19.99 per year. Users can select a plan based on their usage needs and manage subscriptions through their iTunes Account Settings. It's essential to turn off auto-renewal at least 24 hours before the current subscription period ends to avoid automatic renewal.