Barometric altitude

Merry Christmas everybody 
Last week I have played with barometric pressure sensor. U used Samsung Galaxy S3.
Look at attached data. There are pressure from S3, counted altitude and vertical speed and info about measure time. Pressure is a little bit noisy so application has to average last measures and use averaged pressure. Data was measured at home. S3 was placed at the table.
Version 8.5 has possibilities for setting number of moeasure used for average (Menu/App settings/Preferences - Altitude settings)
My first experience:
I tested application in the lifts (cableways) in Italy mountains, from Altitude 3500 up to 10500 feet, because it was not good weather to fly with my Extra 330.
Baro altitude is more accuracy and has less delay then GPS. I noticed only one problem - I needed to use higher QNH to get correct altitude than I read on METAR (around 3 hPa more), because my S3 pressure sensor gives around 3 hPa bigger pressure than is the right value.
My friend, which has company for aircraft maintenance - aeroengine.cz has device, for calibrating altimeters and transpoders. I will try S3 in January in the laboratory, how accuracy is its baro sensor.
Cheers
Petr
P.S.
If you have any experiance with baro altitude at FLY is FUN application, please write it to this thread.
Edit:
I was at the LKMT airport. I checked pressure value of my S3 and ask at the airport QFE pressure. S3 pressure was about 3 hPa higher. In version 8.5 is possible to adjust barometric sensor correction (Menu/App settings/Preferences - Altitude settings/Pressure sensor correction. I set -3 and now altimeter works fine.

Last week I have played with barometric pressure sensor. U used Samsung Galaxy S3.
Look at attached data. There are pressure from S3, counted altitude and vertical speed and info about measure time. Pressure is a little bit noisy so application has to average last measures and use averaged pressure. Data was measured at home. S3 was placed at the table.
Version 8.5 has possibilities for setting number of moeasure used for average (Menu/App settings/Preferences - Altitude settings)
My first experience:
I tested application in the lifts (cableways) in Italy mountains, from Altitude 3500 up to 10500 feet, because it was not good weather to fly with my Extra 330.
Baro altitude is more accuracy and has less delay then GPS. I noticed only one problem - I needed to use higher QNH to get correct altitude than I read on METAR (around 3 hPa more), because my S3 pressure sensor gives around 3 hPa bigger pressure than is the right value.
My friend, which has company for aircraft maintenance - aeroengine.cz has device, for calibrating altimeters and transpoders. I will try S3 in January in the laboratory, how accuracy is its baro sensor.
Cheers
Petr
P.S.
If you have any experiance with baro altitude at FLY is FUN application, please write it to this thread.
Edit:
I was at the LKMT airport. I checked pressure value of my S3 and ask at the airport QFE pressure. S3 pressure was about 3 hPa higher. In version 8.5 is possible to adjust barometric sensor correction (Menu/App settings/Preferences - Altitude settings/Pressure sensor correction. I set -3 and now altimeter works fine.