Then there is one indicator that you can use for measurement - deposit/withdrawal. Because it does not matter if you win 100 times, when you can withdraw less than deposited. But what is the point of tracking such info? And this indicator turns to be useless for people who deposit to have fun. They pay for fun and they dont care if there is anything left on the balance by the end of a day. As for me, when deposit = spend, as well as lose = spend, such tracking makes no use. I dont measure my gambling as profitable or not, I measure it with I had enough fun or not yet.
Because all players are different, maybe someone plays not to have fun, but to test their gambling strategy. In this case, statistics are very important, even if the balance ends up being less than what was originally deposited. But if you play only for entertainment, then it is clear that in this case there is no point in keeping any statistics, or using any kind of application for analytics or statistics. For me personally, winning in gambling is important, even if I understand that this is not done to make money, I want to win, this is an important component of the gameplay that makes me come back again.
The casino also realizes that's the purpose of active participation every day. Gamblers wouldn't wager a high amount of money if they've never won some money before. Hence gambling revolves around making money and winning. I understand every player wants to win, it's something we love. And whenever it doesn't show we'd do anything to get it. Due to this most players increase the pace at which they want to get the win and end up chasing losses. Regulating perfectly these impulses is the slim line that demarcates responsible and compulsive gambling. Keeping a proven track of our gambling activity doesn't make any changes to the compulsive gambling impulses of most gamblers. Although it helps in tracking his wagering habit, the behavioral changes require consistent observations. Not just on expenses but on every single part of the brain, including how we think and make decisions.