The document discusses three jewelry apps: 1. The Chow Tai Fook app provides news, promotions, product listings, and a virtual try-on feature using the camera. 2. The Luk Fook Jewellery - Gold Price app allows calculating gold prices from weight and labor charges, browsing collections, and locating shops. 3. The Luk Fook Jewellery - Gold Price app includes a dictionary, verb wheel, translator, and pronunciation practice features.