Question: Is there an app that can track my posture and alert me when I'm slouching to prevent back pain?

If you want an app to monitor your posture and warn you when you're slouching to try to avoid back problems, Posture Reminder is a good option. This AI-powered app for Mac computers uses computer vision and AI technology to monitor your posture and warn you immediately when it detects slouching. It's designed to protect privacy with data stored locally and offline operation so you can use it anywhere. You can set the frequency of warnings and select from built-in or external cameras. It offers a 24-hour free trial and several subscription plans, including family sharing for up to 5 people.

Another option is BliiNK, a desktop app that uses AI to encourage good working habits. It periodically checks your posture and warns you if you're slumping, measures distance to reduce eye strain and neck muscle fatigue, and warns you to blink periodically. The app offers historical reports on your performance and exercises for your neck, back, hands, wrists and eyes. With customizable reminders for staying hydrated and taking short breaks, BliiNK is designed to help you work better and avoid back and neck pain. It comes in three tiers, including a personal plan for $3.99 per month.