New fast shipping shopping apps have changed online shopping again because their main focus is to deliver packages as quickly as possible while still providing a seamless buying experience. This focus directly addresses the psychological need for instant gratification which affects decision making and consumption patterns. Instant gratification is the desire for an immediate reward for an action and one of the main psychological reasons for impulse buys in shopping apps, which are emotionally driven purchases that a customer did not plan to make. This paper reviews available literature to look at instant gratification and impulse buying in the context of quick commerce. Using the S-O-R theory, hedonic consumption theory, and the time and convenience theories, the review analyses the psychological and technological aspects that drive customer behaviours. Previous studies in online and mobile commerce were used to address the outcomes, key factors, and the gaps that still exist in quick commerce. The review outlines the problems with quick commerce and suggests that a customer's desire for instant gratification is more likely to result in impulse buying when they experience emotionally engaging digital platforms that require little to no effort for their packages to be delivered.