Depending on your point of view, Top Girl is either a harmless game about "girl stuff" (shopping, dating, trying to look "hot") or a thoroughly offensive app promoting a stupefying array of sexist stereotypes.
Whatever your take on Top Girl's social and moral merits, this app definitely falls more under the category of time-waster (and freemium money-waster) than game. You start by choosing an impossibly curvy, underwear-wearing avatar, and then trick her out with clothes with varying "hotness" ratings (divided into "daytime chic" and "club" wear). You then go work to earn money--starting out as an "assistant" or, if you're "hot" enough, a "booth babe" or "model extra"--and then you spend your money at the mall, on more clothes, or at the club, on drinks that you buy to flirt with guys (each with a "manliness" rating). The guys at the club will then date you if you are hot enough (buying more-expensive drinks--i.e., wine is better than beer, but liquor is best--also helps). If you can do arithmetic, Top Girl gives you no interesting gameplay choices, and any narrative comes from grinding away at the game, by spending either your time or real money through in-app purchases. Your energy--which allows you to work and progress through the game--can be depleted quickly but can take over an hour to recharge completely, so the app is designed to be played sporadically. Of course, if you can't wait for your energy meter to recharge, you can purchase in-game currency to buy "Vanilla Lattes" and "Artisanal Chocolate," which allow you to get back to your work as a booth babe more quickly.
A great deal of thought obviously went into maximizing the in-game monetization of customers for this app, but an insultingly small amount of thought went into its game design or even any of its details (in some cases glaringly, such as the audibly clumsy audio looping of the game's unending dance-music soundtrack). Top Girl may be of interest to ironic gamers and unapologetic sexists, but not for its gameplay.