Comparison

Pillow vs ConcordiaChambers

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

Head to head
About

Pillow

This app helps you understand and improve your sleep. It automatically tracks your sleep cycles, analyzes heart rate, and records audio events like snoring. Get personalized insights and tips to wake up feeling refreshed.

Highlights
  • Automatic sleep tracking
  • Smart alarm clock
  • Snore and sleep talking recorder
  • Sleep cycle analysis
  • Heart rate analysis
  • Personalized sleep tips
  • Sleep aid library
Features
Read full description

Sleep trouble? Sleep better with Pillow, your smart sleep tracker. Pillow can analyze your sleep cycles automatically using your Apple Watch, iPhone or iPad. Use Pillow as a smart alarm clock to wake up at the lightest possible sleep stage and start your day refreshed and relaxed. Record important audio events such as snoring, sleep apnea, and sleep talking. Explore trends about your sleep and compare your sleep quality with many Apple Health metrics that affect sleep. As seen on: The New York Times, Forbes, The Guardian, BuzzFeed, The Washington Post, TechCrunch, MacStories, Daily Mail, and many more. Rated as one of the best sleep tracking apps for the Apple Watch and iPhone. Join the millions that have discovered the life-changing benefits of great sleep! TRACK YOUR SLEEP AUTOMATICALLY - Simply wear your Apple Watch during sleep. Pillow will automatically detect and analyze your sleep. - View last night's report right on your Apple Watch, along with the heart rate analysis for the night. - Switch between manual and automatic mode anytime. SLEEP CYCLE & HEART RATE ANALYSIS - Advanced sleep cycle analysis algorithm based on the latest scientific findings in sleep research. - Detailed heart rate analysis - Detailed sleep stage diagram (Awake, REM, Light Sleep, Deep Sleep) and sleep score. - Home Screen, Lock Screen Widgets and Apple Watch Complications AUDIO RECORDINGS USING MACHINE LEARNING - Snoring, sleep apnea, sleep talking and other nightly sounds. - All processing is done using on-device intelligence to ensure privacy. PERSONALISED INSIGHTS & SLEEP TIPS - Create a unique personal sleep program to reach your goals - Regularly updated sleep tips - Advanced Insights, including optimal bedtime, chronotype and more. SLEEP TRENDS - Explore your sleep history with Week, Month, Year, and All Time overviews. - Compare your sleep quality with many Apple Health categories that affect sleep. BACKUP & SYNCHRONIZE - Synchronize and backup your sleep data and audio recordings between your devices. ALARM PRESETS & NAPS - Powernap, recovery, and full-cycle nap - Customisable alarm presets MOOD & NOTES - Track your mood when you wake up - Discover how your notes affect your sleep quality SLEEP AID - Access an expanding library of Meditations, Bedtime Stories, Soundscapes and Music. - Use a track from Apple Music or iTunes as an alarm. - Siri Wind Down support PREMIUM FEATURES: - Unlimited sleep history & analysis - Advanced sleep analysis - Sleep trends & Apple Health comparison - Sleep notes - Heart rate analysis - Sound recordings - Nap modes & Customisable presets - Access to Sleep aid library - Access to all wake-up melodies - Discover: Create a personalised sleep program. - Wake-up melodies from your iTunes library or Apple Music - Data export in CSV format - Smart Wake-up Learn more at https://pillow.app SUBSCRIPTION INFORMATION Your payment will be charged to your iTunes Account as soon as you confirm your purchase. You can manage your subscriptions and turn off auto-renewal from your Account Settings after the purchase. If you start a free trial, you will be charged automatically at the end of the trial period unless you cancel 24 hours before the expiration period. Your subscription will renew automatically unless you turn off auto-renew at least 24 hours before the end of the current period. The renewal cost will be charged to your account within 24 hours before the end of the current period. When canceling a subscription, your subscription will stay active until the end of the period. Auto-renewal will be disabled, but the existing subscription will not be refunded. If offered, any unused portion of a free trial period will be forfeited when purchasing a subscription. Terms & Privacy Policy: https://pillow.app/pillow-privacy-policy-en

About

ConcordiaChambers

Features
Read full description

INTELLECTUAL PROPERTY OF The Concordia Team Concordia: Chambers is a decentralized suite of advanced somatic and cognitive serenity tools designed to guide you back to intentional presence. In a world defined by continuous digital transactions, screen fatigue, and mental fragmentation, Chambers provides a premium, distraction-free portal to calibrate your mind, reset your vision, and dissolve persistent thoughts. Reclaim your mind. Calibrate your focus. Ground your attention. Concordia Chambers moves beyond generic mindfulness tracking to offer active sensory engagement. Through three highly specialized environments, the app combines physiological research with state-of-the-art interactive design to help you transition from digital fragmentation to harmonic alignment. CORE CHAMBERS OF SERENITY: • THE TIME CHAMBER (Temporal Alignment) Evaluate your day. Rate your daily presence on a scale of 1 (Fragmented) to 10 (Harmonic) to reveal the Socratic Clock. Watch as the clock’s structural stability, ticking speed, and hand jitter dynamically reflect your state—melting, warping, and dripping under the weight of mental distraction. Log your introspective answers to deep Socratic prompts, saving a private, chronological reflection diary. • THE SPACE CHAMBER (Oculomotor Calibration) Calibrate your ciliary muscles and release eye strain. Choose your session duration and follow the visual anchor target as it traces a smooth, non-repeating Lissajous Curve trajectory. Designed to combat screen-gaze tunneling, the chamber features built-in 20-20-20 rule prompts that pause the tracking every 40 seconds, guiding your gaze 20 feet away to relax the ciliary visual apparatus. • THE MEMORY CHAMBER (Cognitive Defusion) A transient slate for raw expression. Give form to heavy, distracting, or recurring thoughts on an ephemeral digital canvas. Tap to disperse your entries and witness your text dissolve into thousands of sand-like particles that float upward and vanish into the space between. Built on absolute digital non-retention, your thoughts are permanently wiped from the screen, local storage, and device memory once dissolved. PREMIUM MINIMALIST DESIGN: Adhering strictly to the aesthetic system of the Concordia ecosystem, Chambers features a gorgeous flat dark-mode environment, responsive haptic micro-interactions, and fully localized language support. Switch between English and Chinese seamlessly via the navigation header to customize your experience. Unpack your thoughts. Rest your vision. Welcome to Concordia: Chambers.

Screenshots

Pillow4 screens
ConcordiaChambers4 screens

Verdict

The call

The clearest difference is in-app purchases: ConcordiaChambers at none against Pillow's 6. Pillow's advantage is chart position (#154 vs unranked). On price, ads, device support 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Pillow sells 6 in-app purchases, starting at $19.99 per month. ConcordiaChambers asks for nothing beyond the download.

Scorecard2 real differences · 9 level
Pillow versus ConcordiaChambers: the parameters behind the verdict, then further details
ParameterPillowConcordiaChambers
PriceFreeFree
Rating4.4 (96K ratings) — better—
Positive reviews41.6% of reviews—
Number of ratings96K — better—
Update frequencyEvery 10 days—
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemium—
Best chart rank#154 — better—
DevicesiPhone, iPad, Apple Watch — betteriPhone, iPad
Requires iOS17.0 — better17.6
Further details — not scored
Size691 MB2 MB
Age rating12+4+
DeveloperNeybox Digital Ltd.Qianlu Cao

Bugs and requests

Pillow

Reported bugs

4 issues
  • App crashes or freezes
  • Sleep data not syncing properly
  • Audio recording issues
  • Alarm not working as expected

Requested features

4 requests
  • Ability to edit sleep sessions and data
  • Sleep cycle trends and insights
  • Dream journal integration
  • More customization options for alarms and sounds

ConcordiaChambers

Not enough reviews yet to summarise bugs or requests.

In-app purchases

6 purchases

Pillow

Subscriptions5
  • Pillow Premium - Monthly$19.991 Month
  • Premium Sleep Tracking7 Days trial$49.991 Year
  • Pillow Premium - Annual$49.991 Year
Show 2 more
  • Pillow Premium - Annual1 Year trial$49.991 Year
  • Pillow Premium - Quarterly$59.993 Months
One-time1
  • Pillow Premium - Legacy$249.99
None

ConcordiaChambers

No in-app purchases

Questions

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

Other comparisons