What's the best iOS app for setting up a continuous photo slideshow on a television?

Amazon Photos is a strong contender for users seeking to turn their television into a personalized photo display. The app excels in its compatibility with various TV platforms, including Amazon Fire TV and, via compatible apps, Apple TV and other smart TVs, allowing for effortless streaming of photo collections. Key features like automated daily memories and curated slideshows based on dates or locations enable hands-off operation, ideal for creating ambient backgrounds during workouts or social gatherings. For Amazon Prime members, the app provides unlimited high-resolution photo storage at no additional cost, though video storage is limited to 5 GB. Setting up involves installing the app on both iOS and the TV device, with photos syncing automatically from the cloud. In real-world scenarios, such as a landscape photographer showcasing storm shots during exercise sessions, the app delivers reliable performance. However, limitations include basic editing tools and a lack of advanced customization for slideshow transitions or music. Users report high satisfaction with the TV viewing experience, noting its consistency over years. While alternatives exist for specialized photo streaming, Amazon Photos stands out for its integration with Amazon ecosystems and its set-and-forget approach to photo reminiscence.