Serenity vs Sleep Effect
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Serenity
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Serenity is the ambient sound mixer designed to help you sleep, focus, and relax. Layer up to 5 sounds simultaneously and create your perfect soundscape. SOUNDS Choose from 28 professionally crafted ambient sounds across 4 categories: - Nature — Rain, Forest, Ocean, River, Waterfall, Forest Birds, Crickets, Frogs, Night Forest - Weather — Thunder, Storm, Wind, Blizzard, Waves, Foghorn - Indoor — Fireplace, Café, Air Conditioning, Library, Train, Clock - Noise — White Noise, Brown Noise, Pink Noise, Binaural Beta, Binaural Alpha, Fan FEATURES - Mix up to 5 sounds simultaneously with individual volume control - Sleep Timer with fade out and auto-restart - Control Center & Lock Screen controls - iCloud sync across all your devices - Custom app icons PREMIUM Unlock the full Serenity experience with Premium: - All 28 sounds - Mix up to 5 sounds at once - Custom sleep timer (any duration) - Auto-restart timer - High quality audio mode - iCloud sync - Custom app icons Choose monthly, yearly (save 50% with 7-day free trial), or lifetime access. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://bogdanpopa14.github.io/serenity/privacy.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 Serenity's 3. Serenity's advantage is iOS requirement (17.6 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. Serenity sells 3 in-app purchases, starting at $1.99 per month. Sleep Effect asks for nothing beyond the download.
| Parameter | Serenity | Sleep Effect |
|---|---|---|
| Price | Free | Free |
| Update frequency | — | Fortnightly |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Devices | iPhone | iPhone, iPad — better |
| Requires iOS | 17.6 — better | 26.1 |
| Further details — not scored | ||
| Size | 101 MB | 324 MB |
| Age rating | 4+ | 4+ |
| Developer | Bogdan Popa | Ahmed Nabulsi |
In-app purchases
Serenity
- Premium Monthly$1.991 Month
- Premium Yearly$14.991 Year
- Lifetime Access$19.99
Sleep Effect
No in-app purchases









