I bank with Halifax and use their app. How can I work out how much I've saved since 1Jan 2019? Money is whizzing in and out and they have the bar at the bottom of each month but there is a different figure going in each month as I transfer smal amounts of money from different accounts etc. Is the best way to start with 1 Jan and deduct from current figure/balance? Money is going in and out so much. I'm only taking a few hundred saved at that!