"Rewind's iPhone App: Your Ultimate Memory Aid, Backed by a16z"
Rewind, a personal data recording startup backed by a16z, has launched an iPhone app that privately records users' activity on Safari, allowing them to ask questions based on their web browsing history later. The app uses text recognition and GPT-4 integration to search for specific terms and answer questions. Rewind emphasizes user privacy, stating that all recordings are stored on the device and not sold or used to train AI models. The app is currently free and only records activity on Safari, with plans to expand to other apps in the future.