A. Ensure that you are using the app correctly by following the manufacturer's guidelines for measuring blood pressure. Make sure your wrist is at heart level and that you are seated comfortably. Avoid caffeine or exercise before taking a reading, as these can affect accuracy. If readings continue to be inaccurate, consider calibrating the device if the option is available in the app settings.

B. Check for any updates to the app or firmware for your device. Sometimes, inaccuracies can be resolved with software updates that improve the algorithm used for readings.