DroneLull - Fan Sleep

DroneLull procedurally generates the warm, mechanical hum of a fan, AC, refrigerator and other household appliances for background masking, relaxation, and steady room ambience. Keep volume low, especially around infants, children, or anyone with hearing sensitivity. KEY FEATURES • Procedurally generated audio (no audio files, tiny app size) • Background playback for longer sessions • Adjustable master volume • Live spinning fan blade visualization • Fully offline — no streaming, no ads, no account INCLUDED SOUNDS Free: • Desk Fan — warm mid-frequency hum Pro (6 sounds total): • Stand Fan — slower, deeper rotation • AC Unit — low-frequency mechanical hum • Refrigerator — distant kitchen drone • Vacuum — high-frequency white-pink rush • Dryer — rhythmic tumbling drone PRO FEATURES (optional subscription) • All 6 procedural sounds unlocked • Multi-layer mixer: blend any combination with independent volume sliders • Low-pass cutoff fine-tuning (200–3000 Hz) for warmth control • Sleep timer with smooth fade-out (5/10/15/30/45/60 minutes) • Background playback can continue during screen lock • Zero ads forever HOW IT WORKS DroneLull synthesizes brown noise (integrated white noise) in real time, applies a one-pole low-pass filter for warmth, and modulates amplitude with a slow LFO to mimic rotating blades. Different presets use different cutoffs and rates to recreate distinct appliance characters. No samples, no recording, no streaming. PRIVACY All audio is generated locally. No microphone, no recording, no network. No analytics, no ads, no account. SUBSCRIPTION INFO • Payment will be charged to your Apple ID account at confirmation of purchase. • Subscription automatically renews unless auto-renew is turned off at least 24 hours before the end of the current period. • Your account will be charged for renewal within 24 hours prior to the end of the current period. • You can manage and cancel your subscriptions by going to App Store → Account → Subscriptions. Privacy Policy: https://frexx.top/dronelull/privacy.html Terms of Use: https://frexx.top/dronelull/terms.html SUPPORT jie.xiang.jm@gmail.com