Android: Looking down at your smartphone wreaks havoc on your spine, but it's a habit we all fall back into. Posture provides timely reminders to hold your phone up and relieve the stress on your neck.
Posture's entire philosophy is to be mindful about how you hold your phone. Looking down strains your neck and shoulders, so the app will tell you periodically to hold it at eye-level. Let your hand do the work, not your neck.
You can set the time intervals for the app to send you a reminder. It appears as a floating icon on your Android device, which is enough to get you thinking about your posture and fix it when you see it. You can also customise how the reminder looks, and where on the screen it appears.