Lull: Fan Noise & Sleep
White Noise Machine & Timer
About
This app generates unique, non-repeating fan sounds for sleep and focus. It offers a realistic fan experience with adjustable speed and a gentle fade-out timer. Enjoy a variety of fan types and ambient sounds to mask distractions and promote relaxation.
What's New in Lull
1.2.5
September 29, 2026
iOS 27 SDK Support A small maintenance release. Nothing changes about how Lull sounds or works — just upkeep under the hood. Sleep well.
MoreSubscriptions & In-App Purchases
Pro Yearly
Unlock Pro features with a yearly plan
Developer apps
FAQ
Does Lull have ads?
Yes, Lull contains advertisements. You can watch a short ad to unlock specific sounds for 8 hours. A 'Remove Ads' purchase is also available.
What subscription plans does Lull offer?
Lull offers a 'Pro Weekly' subscription for $1.99 per 7 days and a 'Pro Yearly' subscription for $14.99 per year. These plans unlock all 25 sounds permanently.
How does Lull's sound generation differ from other apps?
Unlike apps that play looped recordings, Lull generates sounds note by note live, ensuring no audible loops over extended periods. The speed control also realistically alters the sound's timbre.
What devices is Lull compatible with?
Lull is built with SwiftUI for iOS and is currently supported on iPhone devices.
How often is Lull updated?
The latest version is 1.2.5, and the app was last updated on September 29, 2026. New sounds are added without requiring app updates.
Is Lull suitable for children?
Lull has an age rating of 4+, making it appropriate for children. It does not collect any personal sleep data.
Can I use Lull without an internet connection?
While the app generates sounds live, specific features like unlocking sounds via ads or managing subscriptions may require an internet connection. The core sound generation and playback are designed to be reliable.
What is the user sentiment for Lull?
Based on the provided data, Lull has a perfect 5.0-star rating from 1 review, indicating very positive initial user sentiment.
