Yes. UbiCar should have a limited effect on your phone’s battery. The effect varies from one smartphone model to another, and on the age of the phone, but battery consumption is highest when the app uses the GPS.
For this reason, we use a variety of sensors to maximize battery efficiency.
Note that when the phone's battery is less than 10%, the app will not record any data.
In some Apple phones the app consumes additional battery resources when interacting with the phone’s Fitness and Motion sensor. To reduce battery consumption in such cases, remove UbiCar permission to use the Fitness and Motion sensor.