Timehop

Timehop is a mobile application that helps users rediscover and celebrate past memories from their digital history. It functions like a daily 'throwback' service, presenting users with content from previous years to encourage sharing with friends.

Timehop's core offering is to resurface past memories, which aligns with the 'memory-cards' feature. The website explicitly states "Timehop helps you celebrate the best moments of the past with your friends," implying the sharing aspect, which aligns with 'share-via-external-apps'. However, it does not specify integration with Apple Photos, relationship prompts, shared timelines, infographics/quizzes, or local-first privacy, which are must-have features for 'Remember This'.