The mobile app can track journeys automatically using your phone’s GPS, and you swipe each one as business or personal. For anyone who drives a lot for work it is genuinely one of the better reasons to choose QuickBooks over its competitors, because the alternative is a paper log nobody keeps. Mileage at the approved rates is a real deduction that most sole traders significantly underclaim, purely through not recording it — 8,000 business miles is a meaningful sum you simply lose if it was never written down. The tracking is also better evidence than a reconstruction, which matters if anyone ever asks. The cost is battery life and a mild feeling of being followed by your accounting software, which some people dislike enough to turn it off.