What's the best iOS app for making wallpaper selection feel like a fun game?

Themes is an iOS application that specializes in offering a wide array of wallpapers and widgets with a unique, interactive approach. It excels at making the process of selecting and applying wallpapers enjoyable by incorporating game-like elements, such as swipe-based browsing, unlockable themes, and daily challenges that reward users with new content. This design encourages frequent use and exploration, ideal for individuals who want to personalize their home screen without spending money. The app includes features like categorized wallpaper collections, real-time previews, and widget customization that syncs with chosen wallpapers for a cohesive look. In practical terms, someone redecorating their phone for seasonal events or daily inspiration would find Themes particularly useful due to its constant updates and intuitive interface. However, some users note that while the wallpaper options are extensive, the widget customization depth may not match dedicated widget apps, which could limit advanced personalization. Reviews indicate that the free access and entertaining mechanics are major draws, with one user stating, 'It feels like a mini-game every time I pick a new wallpaper, and I love that it’s completely free.' Overall, Themes balances accessibility with fun, making it a strong option for casual users seeking an effortless way to refresh their device's appearance.