Sleep Nook vs SleepDiary
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Sleep Nook
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Tired of Fussy Sleep Trackers? Most sleep apps overload you with charts or force sign-ups. Sleep Nook is different: a simple, warm spot to jot your nights—no hassle, just you and your rest. What You Can Do 1-Tap Logging: Hit "Start" at bedtime, "End" when you wake—no long forms. Tag Factors: Note caffeine, stress, or late dinners—see how they affect sleep. Spot Trends: Soft graphs show weekly/monthly patterns—no jargon, just clear insights. Log Naps: Track daytime rests for full sleep health. Your Data, Your Call No Sign-Ups: Download & start—no email, no account. Privacy Lock: Touch/Face ID keeps logs private. CSV Exports: Backup data to your device/cloud—you own it. Sleep Better, Gently No alerts, no scolding—just notice what works. Fix jet lag, ease stress sleep, or just curious? This nook helps. Download Sleep Nook—log rest the easy way.
SleepDiary
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SleepDiary is your ultimate night-time companion, designed to help you understand your sleep patterns and sound events completely automatically. Using advanced on-device AI and Apple Health integration, SleepDiary provides deep insights into how well you truly rest. KEY FEATURES: Smart Sound Recording & AI Analysis • Automatically record and categorize sleep sounds: snoring, sleep talking, coughing, and environmental noise. • Cloud-powered AI analysis strictly reviews and precisely labels distinct sleep events. • Listen to your night's highlights in the morning! Sleep Stages & Quality Score • Sync seamlessly with Apple Watch to analyze your sleep stages (Awake, REM, Core, Deep). • Get a comprehensive Daily Sleep Score based on duration, continuity, and recovery metrics. Apple Watch Integration • Track your Heart Rate, Blood Oxygen (SpO2), and HRV directly while you sleep. • Wake up to a detailed summary generated from your wrist. Circadian Rhythm Tracker • Visualize your sleep habits over weeks to find your perfect biological rhythm. • Form better bedtime routines and improve your overall health recovery. Privacy First • Your audio data stays yours. Recordings are kept locally on your device by default, and CloudSync keeps your data secure across your personal iCloud. • No hidden tracking, no data selling. ACHIEVEMENTS & WIDGETS • Unlock sleep achievements as you build healthier bedtime habits. • Convenient Home Screen widgets and Live Activities (Dynamic Island supported) to check your sleep session at a glance. Start tracking tonight and wake up with actionable insights every morning!
Screenshots
Verdict
The clearest difference is price: SleepDiary at Free against Sleep Nook's $1.99. SleepDiary also leads on device support (3 vs 1). Sleep Nook's advantage is in-app purchases (none vs 3). On update cadence, ads and iOS requirement 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
SleepDiary is free to download; Sleep Nook costs $1.99 up front. SleepDiary sells 3 in-app purchases, starting at $0.99 per month. Sleep Nook asks for nothing beyond the download.
Sleep Nook ships an update weekly, SleepDiary every 5 days. The most recent releases landed on October 2, 2026 and October 1, 2026 respectively.
| Parameter | Sleep Nook | SleepDiary |
|---|---|---|
| Price | $1.99 | Free — better |
| Update frequency | Weekly | Every 5 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Devices | iPhone | iPhone, iPad, Apple Watch — better |
| Requires iOS | 18.2 — better | 18.6 |
| Further details — not scored | ||
| Size | 24 MB | 4 MB |
| Age rating | 12+ | 4+ |
| Developer | 锦泉 严 | 璐 王 |
In-app purchases
Sleep Nook
No in-app purchases
SleepDiary
- 睡眠声音日记 Pro$0.991 Month
- 睡眠声音日记 Pro$4.991 Year
- 睡眠日记 Pro$9.99









