Lullabyte vs Sleep Effect
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Lullabyte
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Lullabyte is the sleep sound mixer that helps you fall asleep faster and stay asleep longer. Mix ambient sounds together to create your perfect sleep environment -- every single night. MIX YOUR PERFECT SOUNDTRACK Choose from 18 beautifully crafted ambient sounds and layer them together. Rain over ocean waves? Campfire with distant thunder? Every combination is unique to you. SOUNDS INCLUDED: Nature: Rain, Ocean Waves, Thunder, Forest, Wind, River, Birds, Night Crickets, Campfire Noise: White Noise, Pink Noise, Brown Noise Household: Fan, Train, Cafe, Keyboard, Dryer, Airplane INDIVIDUAL VOLUME CONTROLS Fine-tune each sound independently. Turn up the rain, dial back the thunder -- you're in complete control of your mix. SLEEP TIMER Set a timer from 5 minutes to 2 hours. When time is up, your sounds gently fade out so you're never jolted awake. DESIGNED FOR BEDTIME Beautiful dark interface that won't strain your eyes at night. Launch the app, tap your sounds, and drift off. WORKS OFFLINE All sounds are stored on your device -- no internet connection needed. Perfect for flights, camping, or anywhere you need better sleep. PRIVACY FIRST Lullabyte collects zero personal data. No accounts, no tracking, no ads on the free tier. -- FREE FEATURES -- 6 ambient sounds (Rain, Ocean, White Noise, Fan, Campfire, Crickets) Mix up to 3 sounds together Volume controls Sleep timer -- PREMIUM FEATURES -- All 18 ambient sounds Unlimited sound mixing Future sounds included for free Support an indie developer Start sleeping better tonight. Download Lullabyte -- it's free. Payment is charged to your Apple ID account. Subscriptions auto-renew unless canceled at least 24 hours before the end of the current period. Manage subscriptions in Settings > Apple ID > Subscriptions. https://kcunningham408.github.io/vibecmd-pages/lullabyte/terms.html
Sleep Effect
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SLEEP EFFECT: YOUR ARCHITECT OF CALM. Stop fighting the silence. Whether you’re battling a racing mind, a noisy neighborhood, or the hum of tinnitus, Sleep Effect empowers you to build a personalized audio sanctuary. Using a state-of-the-art layering engine, we don't just play sounds—we help you conduct your environment. WHY SLEEP EFFECT? Unlike standard sound machines that play repetitive loops, Sleep Effect uses an organic replay engine. By introducing natural delays between sounds, we eliminate "loop fatigue," creating an unpredictable, immersive atmosphere that feels like the real world. THE CORE FEATURES: 1. AN INFINITE LIBRARY OF HIGH-FIDELITY AUDIO Curated by sound enthusiasts, our library is immersive and categorized for effortless discovery: * WATER & RAIN: Thunderstorms, mountain streams, and the ocean pulse. * THE GREAT OUTDOORS: Rustling leaves, meadow breezes, and forest nights. * WILDERNESS ECHOES: Haunting loon calls, distant gulls, and midnight owls. * COZY ELEMENTS: Crackling log fires and wind-swept cabins. * AIR & SPACE: Mountain gusts and soft drones to clear mental clutter. 2. THE CUSTOM MIX ARCHITECT Don’t just listen—create. Layer unlimited sounds simultaneously with precision control: * INDIVIDUAL VOLUME SLIDERS: Make the rain heavy, but the distant thunder faint. * NAMED FAVORITES: Save your "Rainy Cabin" mix with custom emojis for one-tap relaxation. 3. PRECISION CONTROLS & SLEEP TIMER * GENTLE FADE-OUT: Set your timer and drift off as the audio gracefully fades to silence. * MASTER PLAYER: A polished, tactile interface to pause or stop all sounds instantly. 4. ORGANIC REPLAY DELAYS Our "Natural Replay" feature allows you to add manual delays between tracks. This ensures your environment stays fresh and organic, preventing your brain from spotting a loop. DESIGNED FOR YOUR BEDSIDE: * OBSIDIAN DARK MODE: Designed to reduce eye strain and keep your room dark. * LOCK SCREEN CONTROL: Full artwork and media controls without unlocking your phone. * BACKGROUND PLAY: Keep your soundscape running while using other apps. PERFECT FOR: * DEEP SLEEP: Mask tinnitus and silence racing thoughts. * PARENTS: Create a consistent, soothing environment for babies. * DEEP WORK: Block out office distractions and reach a flow state. * MEDITATION: Ground your practice with high-fidelity nature. Transform your space. Find your frequency. Download Sleep Effect today.
Screenshots
Verdict
The clearest difference is in-app purchases: Sleep Effect at none against Lullabyte's 1. Sleep Effect also leads on update cadence (fortnightly vs every 2 months). Lullabyte's advantage is iOS requirement (15.1 vs 26.1). On price, ads and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Lullabyte sells 1 one-off in-app purchase. Sleep Effect asks for nothing beyond the download.
Lullabyte ships an update every 2 months, Sleep Effect fortnightly. The most recent releases landed on October 4, 2026 and October 11, 2026 respectively.
| Parameter | Lullabyte | Sleep Effect |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 months | Fortnightly — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.1 — better | 26.1 |
| Further details — not scored | ||
| Size | 39 MB | 324 MB |
| Age rating | 4+ | 4+ |
| Developer | VibeCMD | Ahmed Nabulsi |
In-app purchases
Lullabyte
- Lullabyte Pro$2.99
Sleep Effect
No in-app purchases









