Comparison

Slooma vs ZZZ Tracker

Price, ratings, monetisation and update history for both apps, side by side โ€” with what reviewers say about each.

Head to head
About

Slooma

Features
Read full description

Slooma is a professional sleep tracking app for iOS and Apple Watch. See exactly how you slept, why, and how to sleep better โ€” with deep, REM, light, and awake stages charted automatically. SLEEP TRACKING - Apple Watch: stages, heart rate, HRV, SpO2 during the night - Phone-only mode: motion-based stage estimation - Two-way sync with Apple Health - Restores an in-progress night after a phone restart SLEEP SCORE A 0-100 score combining duration, efficiency, continuity, stage balance, and physiology. INSIGHTS - Daily, weekly, monthly trends - Sleep debt and consistency score - Heart rate, HRV, SpO2 overlays AI SLEEP COACH (Pro) - Personalised morning tips - On-device Apple Foundation Models on iOS 26 - Your data never leaves your phone GENTLE SMART ALARM - Wakes you in light sleep within a 30-min window - Soft 30-second volume ramp - 9-min snooze SLEEP SOUNDS - White, pink, brown noise - Rain, ocean, fan, fireplace, wind, river, storm - Binaural delta and theta - Auto fade-out 5-90 min PRIVACY - All sleep data stays on your device - Optional encrypted iCloud sync - Never sold to third parties PRO - AI sleep coach - Snore and sleep-talk recording - Full sound library - Unlimited history - Advanced HRV trends - Sunrise wake-light - CSV / JSON export - Custom themes 7-day free trial. Cancel anytime in Apple ID settings. Slooma โ€” deeper sleep, calmer nights. Privacy Policy: https://solvydevelopment.com/slooma/privacy/en.html Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

ZZZ Tracker

Features
Read full description

ZZZ Tracker is your personal sleep journal โ€” simple to log, powerful to analyze. Whether you're trying to improve sleep quality, build healthier habits, or understand what affects your rest, ZZZ Tracker helps you track every night and uncover meaningful patterns over time. LOG YOUR SLEEP IN SECONDS Record bedtime, wake time, and sleep quality in seconds. Add optional notes and tag factors such as caffeine, alcohol, exercise, stress, late meals, screen time, or naps to understand how daily habits affect your sleep. POWERFUL SLEEP INSIGHTS Sleep Goal Set a nightly sleep target and see how each night compares. Weekly Chart View your sleep duration over the last 7 days at a glance. Sleep Debt Track your cumulative sleep surplus or deficit across 7-day and 30-day periods. Factor Correlations Discover which habits are linked to better or worse sleep quality. Monthly Heatmap See every night displayed on a color-coded calendar for quick trend analysis. BUILD LASTING HABITS Set a personal sleep goal and monitor your progress over time. Maintain logging streaks to stay consistent night after night. Review bedtime consistency to understand how regular your schedule is. Enable daily reminders so you never forget to log your sleep. Receive a weekly recap every Sunday morning to review your progress. YOUR DATA, YOUR WAY Export all sleep records as CSV or JSON at any time. Back up and restore your data using Google Drive. Reset all data from Settings whenever you want a fresh start. Start tonight. Better sleep begins with awareness. Download ZZZ Tracker and take the first step toward healthier sleep.

Screenshots

Slooma4 screens
ZZZ Tracker3 screens

Verdict

The call

The clearest difference is in-app purchases: ZZZ Tracker at none against Slooma's 3. ZZZ Tracker also leads on iOS requirement (13.0 vs 17.0). On price, ads and device support there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Slooma sells 3 in-app purchases, starting at $0.29 per month. ZZZ Tracker asks for nothing beyond the download.

Scorecard2 real differences ยท 4 level
Slooma versus ZZZ Tracker: the parameters behind the verdict, then further details
ParameterSloomaZZZ Tracker
PriceFreeFree
Update frequencyโ€”Monthly
AdsNoNo
In-app purchasesYesNo โ€” better
DevicesiPhone, Apple WatchiPhone, iPad, iPod โ€” better
Requires iOS17.013.0 โ€” better
Further details โ€” not scored
Size17 MB30 MB
Age rating4+4+
DeveloperFurkan AtamanLuc Pham Van

In-app purchases

3 purchases

Slooma

Subscriptions2
  • Slooma Pro Monthly7 Days trial$0.291 Month
  • Slooma Pro Yearly7 Days trial$1.991 Year
One-time1
  • Slooma Pro Lifetime$4.99
None

ZZZ Tracker

No in-app purchases

Questions

Is Slooma free?
Slooma is free to download, with in-app purchases available.
Is ZZZ Tracker free?
ZZZ Tracker is free to download, with no in-app purchases.
Do Slooma or ZZZ Tracker have ads?
Neither Slooma nor ZZZ Tracker shows ads.

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