Being honest, I didn't finish Master Thief since the game features 11 levels and then you need to purchase the rest. Since I don't wanna, I base my analysis on those first missions and that's it.
My interest on this game is because it's a reference for a potential personal project. The gameplay itself it's basic: You memorize the guard patrols and move across their routes to collect all the gold bags and escape. I'm missing a story element to engage the user, otherwise the experience doesn't connects with you and becomes easy to forget. Still an interesting usage of stealth mechanics in iOS.