Thank you for your feedback and for sharing your opinion regarding the amount of units in the application.
At the moment, we are planning to decide something in the future on this issue.
If by tracking the phone, you mean displaying your location on the map (the location of the device from which you entered the application), then at the moment, unfortunately, this option is only available in the web version of the application. In the application, it is currently unavailable due to inconsistency with Google Play policy. We hope that this situation may change in the future.
If you mean using a phone instead of a tracker, then you can use the WiaTag and Traccar Client applications and use them together with Ruhavik (Mobile category of unit).