video1.0<iframe src="https://www.loom.com/embed/cae037fccc234abe80f03a905e063821" frameborder="0" width="2560" height="1920" webkitallowfullscreen mozallowfullscreen allowfullscreen></iframe>19202560Loomhttps://www.loom.com19202560https://cdn.loom.com/sessions/thumbnails/cae037fccc234abe80f03a905e063821-796207d5e4ec1274.gif30.766667Box Fan Sleep: White Noise app was built to solve a simple but frustrating problem: the modern App Store is filled with sleep and white noise apps that require expensive annual subscriptions, mandatory accounts, and constant internet connections. I wanted to build the antithesis to that, a beautifully native, lightweight, and highly functional utility that puts the user's sleep first. Key Features & Technical Highlights: Custom Audio Engine: Built using AVFoundation and AVAudioEngine, the app features a dual-player crossfade system. This ensures that the fan and nature overlay sounds loop infinitely without any audible gaps, clicks, or repeating points. Smart Fade-Out Timer: Most sleep apps shut off abruptly, which often startles the user awake. Box Fan Sleep gently fades the master volume to zero over the final 30 seconds of the timer, ensuring a seamless transition into deep sleep. Dynamic Pitch Control: Users can slide the speed of the fan to instantly transition the audio profile from deep, rumbly brown noise to crisp white noise, masking specific environmental frequencies. Built for iOS: The app utilizes a clean, minimal SwiftUI interface, supports Dark Mode natively, and integrates with the Lock Screen / Control Center via MPRemoteCommandCenter so users can control their sleep environment without opening their phones. The Business Model: Box Fan Sleep is completely ad-free and subscription-free. It respects user privacy by collecting zero data. It offers a generous free tier, with a simple, affordable one-time In-App Purchase for premium overlays and extended timers. I built this app as a solo developer to help people sleep better, without the anxiety of recurring charges. Thank you for considering Box Fan Sleep! https://boxfansleep.com/