The most downloaded iPhone app of the year was Temu, a Chinese e-commerce app known for offering big discounts on various products.Temu surpassed popular apps like TikTok and ChatGPT in popularity, particularly among Gen Z consumers in the US.Other apps in the top 20 most-downloaded list included Amazon, Shein, and McDonald's, indicating a preference for budget-friendly options and deals.Retailers like McDonald's have found success in using targeted in-app promotions to build customer loyalty.