Does a complete offline tracker for Android exist?

Question

satellite navigation

Sorry for the noob question. Is there a tracker for Android that writes a track using only the internal sensors of a smartphone (gyrocompass, accelerometer)? That is, without connecting to GPS / A-GPS, Wi-fi and the Internet.

Answer 1

At the moment, this topic is at the level of research and presentations at conferences. The accuracy of the sensors built into smartphones is completely insufficient for inertial navigation using smartphone sensors to be of at least some practical interest. In a minute, an error of hundreds of meters is already accumulating.
To see the state of affairs on the topic, google for the key inertial navigation system and indoor navigation

Answer 2

I can only say that I developed an application based on built-in sensors and I assure you that the accuracy of these sensors is extremely low. Without calibration and constant adjustment using GPS, you cannot rely on them. By the way, many maps use these sensors for navigation in tunnels and indoors.
And yes, writing such an application is not at all difficult, I spent a couple of evenings on the data collector for analyzing the accuracy of sensors, of which I drew the interface most of the time.

Answer 3

Follow someone without pale will not work.