Ivan Gorinov

This application provides a database of aviation weather stations that have their data on NOAA site.

A software variometer. This application uses Kalman filter to estimate climb/descent rate from barom

Sound spectrum analyzer, based on PVFT library. Uses device microphone as data source. https://githu

This app precisely measures the frequencies of string vibration harmonics (up to 16) and shows the d

A mobile device with internal barometric sensor can work as an altimeter, applying the method used i