Hello Neighbor Nicky's Diaries extends tinyBuild's popular stealth puzzle series to mobile platforms, offering a standalone experience that complements the main console titles. The game places players in the shoes of Nicky Roth, investigating mysterious occurrences in the neighbor's house while avoiding capture. Its mobile adaptation maintains the core tension of the franchise while reworking mechanics for touchscreen play. The app's primary functionality revolves around environmental interaction and strategic movement. Players must solve physical puzzles by manipulating objects, hiding in designated spaces, and observing AI patterns to progress through the narrative. Specific mechanics include drawer searching for clues, chair stacking for vertical access, and light-switch manipulation to alter visibility. The neighbor's AI responds to sound and visual cues, creating dynamic challenges that require observational skills and patience. Level design incorporates multiple solution paths, though some routes prove more efficient than others. In practical use, the touch controls demonstrate thoughtful adaptation from console counterparts. A virtual joystick handles movement while context-sensitive buttons appear near interactive objects. The interface automatically adjusts button size based on interaction priority, though smaller devices occasionally present precision challenges during time-sensitive actions. Performance remains stable on devices from iPhone 11 onward, with some frame rate dips noted on older hardware during complex physics simulations. The cartoonish visual style translates well to mobile screens, maintaining readability while preserving the series' distinctive aesthetic. User feedback, reflected in the 4.5/5 rating, highlights the successful translation of core gameplay to mobile. Reviews indicate appreciation for the faithful adaptation of puzzle mechanics and the expansion of series lore. Some players note occasional control responsiveness issues during frantic escape sequences, while others praise the logical puzzle design that rewards careful observation. The absence of in-depth written reviews suggests most users engage through gameplay rather than detailed commentary, though the high rating implies general satisfaction with the experience. As a mobile extension of the Hello Neighbor universe, Nicky's Diaries delivers competent stealth-puzzle action with some minor control limitations. The app successfully captures the tension and curiosity that defines the franchise while making reasonable compromises for mobile play. While not replacing the console experience, it provides substantial content for series enthusiasts and stands as one of the more fully-featured adventure games on iOS.