Letters Launches "MOJO KING," an Apple Watch-Based iOS App for Non-Invasive Testosterone Monitoring SEOUL, South Korea, Jan. 19, 2026 /PRNewswire/ -- Digital healthcare startup 6Letters today ...

Digital healthcare startup 6Letters today announced the official launch of MOJO KING, an iOS application that enables non-invasive monitoring of testosterone-related physiological patterns using Apple ...

Many iPhone owners may be resisting iOS 26. But this latest version does carry with it important security updates that will keep your phone protected.