Yandex Lavka, Uber, Notion, Snoonu, Instagram, Intesa bank, Airbnb, Tinkoff bank, and ex-Twitter are among the notable apps.Snoonu, a Qatari app, introduces a shopping list feature with AI search to simplify ordering and save time for users.Metrics like comment count, engagement, and user motivation are important for evaluating the impact of a product feature.The rebranding and evolution of Twitter into X provides key insights on product development and the decline of Facebook's feed.