As a first time driver this insurance was the 'cheapest' for me. (Also having no previous insurance to compare it with) The idea of the box is good however it does mean that I cant actually use my car for work which is what I bought it for as I work peak hours of 9-5 and this would mean my usage is scored lowly for no reason. The speed calculation is accurate and the smoothness sometimes. However, I would like to use my car more often and not always have to worry about my score as I believe I am a sensible driver with or without the box. If for any reason the car stalls the box isn't clever enough to detect this and so it is classed as extra usage therefore a lower score. The carrot app also doesn't exist for windows phones so I cant access my profile etc. I have contacted carrot once and the customer service was fine. I think each individual should let Carrot know the places we most often go to and not penalise us for them for example a relatives house and for driving to work at core hours. The engineer did also ruin the inside of my dashboard when installing the box which I haven't brought up with them. Otherwise, the insurance is fine still a bit steep for me now however just wait and see what happens at renewal.