CBOH is an iPhone application developed by CBOH Inc., falling under the Lifestyle category with a focus on Health & Fitness. This tool, created by engineers and designers from MIT and Harvard, provides a platform for hosting events, celebrations, and trips while ensuring COVID-19 vaccination and testing statuses are managed efficiently. With top-notch data security, hosts can effortlessly organize events, invite guests, and oversee proof of attendees' vaccination or testing status. Attendees have the convenience to upload and securely store their CDC COVID-19 Vaccination Record Card and other testing results, allowing them to participate in social gatherings with peace of mind.