If you're looking for a way to keep your posture up while you're staring at your computer screen, BliiNK is a good option. This desktop app uses AI to monitor your posture and warn you when you're slumping. It'll also suggest exercises to ease neck, back and eye strain. BliiNK also can send reminders to drink water, take short walks and otherwise keep your work life balanced. Because the app runs its AI algorithm on your computer, it keeps your data private and out of the cloud.
Another option is Posture Reminder, a Mac-only app that uses computer vision and AI to monitor your posture and warn you in real time. It stores data locally and works without a network connection, so you can use it anywhere. You can set the frequency of warnings and use built-in or external cameras. A 24-hour free trial and relatively low-cost subscription plans make Posture Reminder a good option for anyone who spends hours sitting in front of a computer.