Based solely on the provided article body, ChatGPT's new App Hub contains useful tools, and the article picks five that offer the biggest day-to-day benefits for anyone over 50. The Expedia app brings vacation planning into a single conversation. Canva lets users create professional-looking designs by describing what they want. The Norton app inside ChatGPT helps identify suspicious messages before clicking. The article also mentions building playlists based on favorite artists, decades, or memories.