I've noticed the app tends to drain my battery more quickly than expected, which is something to keep in mind for longer sessions. The competitive aspect is fun, yet I sometimes feel there’s a lack of fairness in how scores are calculated, which makes me question the game's integrity. While the latest update brought some nice features, it also introduced a few bugs that need fixing. I really like the variety in card designs, but I wish there were more options for customization to enhance personal expression.