Comparison

SleepMapper vs Ozlo Sleepbuds

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

Head to head
About

SleepMapper

This app enhances sleep quality by connecting with smart headbands and wake-up lights. It tracks sleep stages, provides soothing audio, and offers smart alarms to improve daytime energy and promote a refreshed awakening.

Highlights
  • Deep sleep enhancement with audio tones
  • Sleep stage tracking
  • Smart alarm for gentle waking
  • Bedroom environment monitoring
  • Guided wind-down feature
  • HealthKit integration
Features
Read full description

The SleepMapper app pairs with the SmartSleep Deep Sleep Headband and the connected Sleep & Wake-Up Light devices. Download the SleepMapper app to awaken to a better day tomorrow. Enhancing deep sleep With SmartSleep Deep Sleep Headband: Improves your total sleep experience - falling asleep, sleep quality and waking up. Measures your sleep stages and delivers audio tones to boost quality of deep sleep, increasing daytime energy. Soothes you to sleep with gentle sounds only you can hear. Smart Alarm wakes you with gentle sounds during periods of light sleep. SmartSleep Deep Sleep Headband is a wearable sleep solution, proven to help improve the quality of your sleep for those who do not get enough sleep due to lifestyle. Sound tones enhance the “slow waves” your brain produces during deep sleep. Feel more rested and refreshed without changing how long you sleep. Waking up refreshed With SmartSleep Sleep & Wake-Up Light: Fall asleep relaxed, wake up refreshed and learn about your bedroom environment. Monitor amongst other the light and sound levels so you can adjust to improve your sleep. Philips SmartSleep Sleep & Wake-Up Light is our premier Sleep & Wake-up Light and is designed to help you wake up refreshed after a productive night’s sleep. It combines the benefits of a Wake-up Light with RelaxBreathe, a guided wind-down-to-sleep feature that helps calm your body and mind – and offers extensive app-enabled customization for personalizing your sleeping environment. Philips SmartSleep Sleep & Wake-Up Light is part of our full range of light therapy products created to get you into a positive sleeping, waking and living routine. You’re part of our first release of our sleep platform and we’d love your help to continuously improve. We welcome any feedback on how you’re finding the app, additional features, and improvement. Thank you for supporting and joining our healthy sleep community. Please note SleepMapper supports Philips SmartSleep Deep Sleep Headband and the connected Sleep & Wake-Up Light devices. For CPAP devices, please download the DreamMapper app. For more info visit Philips.com/SmartSleep This app is compatible with HealthKit for sleep tracking purposes.

About

Ozlo Sleepbuds

Tiny, ultra-comfy headphones designed for optimal sleep. They offer all-night battery, noise blocking, audio streaming, and biometric sensing. The companion app allows for personalized settings and sleep data reporting.

Highlights
  • Ultra-comfy, low-profile design
  • All-night battery life
  • Noise blocking sleep sounds
  • Stream any audio content
  • Personal in-ear alarm
  • Biometric sleep sensing
  • Phone-free operation
Read full description

Ozlo Sleepbuds® 2 are tiny, ultra-comfy earbuds designed to give you the best sleep of your life. They come with all-night battery life, noise blocking, audio streaming, and biometric sensing. The Ozlo app allows you to personalize your Sleepbuds experience, with controls for all your important settings and reports for your sleep data. LUXURIOUS COMFORT Sleepbuds are surrounded with super soft, squishy silicone tips for unparalleled all-night comfort, even for side sleepers. And they're specifically designed to be low profile, so they don't stick out causing undue pressure on your ear like other earbuds. LONG BATTERY LIFE Sleepbuds can play for up to 14 hours for all-night noise masking or streaming. The Smart Case can provide 2-3 additional charges so you can take it with you anywhere you go. SOUND, DESIGNED FOR SLEEP Sleepbuds come with precisely tuned sound that helps to reduce the impact of disruptive noise like snoring, traffic, pets, and noisy neighbors. BLUETOOTH STREAMING Your bedtime routine, your way. Stream music, podcasts, audiobooks, and soundscapes that help you relax before falling asleep. PERSONAL IN-EAR ALARM Sleepbuds private in-ear alarm gently wakes you through your Sleepbuds instead of filling the room with sound. SLEEP MODES Choose how your Sleepbuds transition into your Sleep Sound throughout the night. Whether you prefer it to start immediately, after a timer, when you fall asleep, or after streaming ends, there’s a mode that fits your routine.ontrol how your Sleep Sound works through the night. PHONE-FREE CONTROLS The new Smart Case button gives you quick, simple control over your Sleepbuds without needing to reach for your phone in the dark. TIMER Automatically turns off streaming audio or Sleep Sounds after a set amount of time, so your audio doesn't need to play all night long. SLEEP PATTERNS See how your sleep improves over time with insights into your duration, consistency, and efficiency. ENVIRONMENTAL SENSORS Discover what shapes your sleep. Your Smart Case tracks your room’s noise, light, and temperature to reveal how your environment affects your sleep over time.

Screenshots

SleepMapper4 screens
Ozlo Sleepbuds4 screens

Verdict

The call

The clearest difference is update cadence: Ozlo Sleepbuds at weekly against SleepMapper's every 2 months. Ozlo Sleepbuds also leads on review sentiment (45% vs 30%). SleepMapper's advantage is monetization model (free vs free with in-app purchases) and iOS requirement (16.6 vs 18.0). On price, rating, ratings volume and ads 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. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.7 for SleepMapper against 4.7 for Ozlo Sleepbuds. Both are backed by a comparable volume of ratings — 3.8K and 2.6K respectively. Written reviews are what separate them: 30% of SleepMapper's written reviews are positive against 45% of Ozlo Sleepbuds's.

UpkeepUpdate frequency

SleepMapper ships an update every 2 months, Ozlo Sleepbuds weekly. The most recent releases landed on September 19, 2026 and September 22, 2026 respectively.

Scorecard4 real differences · 6 level
SleepMapper versus Ozlo Sleepbuds: the parameters behind the verdict, then further details
ParameterSleepMapperOzlo Sleepbuds
PriceFreeFree
Rating4.7 (3.8K ratings)4.7 (2.6K ratings)
Positive reviews30.2% of reviews44.6% of reviews — better
Number of ratings3.8K — better2.6K
Update frequencyEvery 2 monthsWeekly — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree — betterFree with in-app purchases
DevicesiPhoneiPhone, iPad — better
Requires iOS16.6 — better18.0
Further details — not scored
Size193 MB258 MB
Age rating4+12+
DeveloperPhilipsDrowsy Digital Inc.

Customer experience

SleepMapper

All ratings3,789 ratings
Positive92.8%
Neutral2.5%
Negative4.7%
Written reviews242 reviews
Positive30.2%
Neutral12.4%
Negative57.4%

Ozlo Sleepbuds

All ratings2,613 ratings
Positive92.7%
Neutral1.8%
Negative5.6%
Written reviews372 reviews
Positive44.6%
Neutral13.7%
Negative41.7%

User reviews

SleepMapper

From 3.8K App Store ratings

What we love

  • 🚀 Excellent wake-up light
  • 🌙 Helps with sleep
  • 👍 Customizable settings
  • 🌞 Simulates sunrise/sunset

Room to improve

  • 🐛 Connectivity issues with app
  • 🔌 Unreliable WiFi connection
  • 📱 App is buggy and unstable
  • 🕰️ Difficult to set up and use

Ozlo Sleepbuds

From 2.6K App Store ratings

What we love

  • 💤 Comfortable for side sleeping
  • 🌙 Helps with sleep and tinnitus
  • 🔕 Blocks out noise like snoring
  • 🕰️ Alarm wakes user without disturbing partner
  • 🔊 Good sound quality and variety of sleep sounds

Room to improve

  • 🔌 Battery life issues, drains quickly
  • 📶 Bluetooth connectivity problems, frequent disconnections
  • 🤖 Glitchy app with stability and UX problems
  • 🔊 Limited volume control and sound options
  • ⚠️ Mandatory updates cause disruptions

Bugs and requests

SleepMapper

Reported bugs

4 issues
  • App won't connect to device
  • Alarm settings not saving
  • Frequent disconnections and need to reset
  • App crashes on launch

Requested features

4 requests
  • Integrate with smart home platforms
  • Add more sound/music options
  • Improve sleep tracking and data analysis
  • Allow remote control from anywhere

Ozlo Sleepbuds

Reported bugs

4 issues
  • Earbuds not charging properly in case
  • Sync issues between left and right earbuds
  • App fails to connect or update firmware
  • Sleep timer function is not working as expected

Requested features

4 requests
  • Allow custom sleep sounds and playlists
  • Add phone-free mode to use without app
  • Improve alarm features to work with phone alarms
  • Expand sound library with more options like nature sounds

In-app purchases

None

SleepMapper

No in-app purchases

None

Ozlo Sleepbuds

No in-app purchases

Questions

Is SleepMapper free?
SleepMapper is free to download, with no in-app purchases.
Is Ozlo Sleepbuds free?
Ozlo Sleepbuds is free to download, with no in-app purchases.
Which has better reviews, SleepMapper or Ozlo Sleepbuds?
SleepMapper and Ozlo Sleepbuds are both rated 4.7 out of 5 on the App Store, from 3.8K and 2.6K ratings respectively.
Do SleepMapper or Ozlo Sleepbuds have ads?
Neither SleepMapper nor Ozlo Sleepbuds shows ads.
Which is updated more often, SleepMapper or Ozlo Sleepbuds?
SleepMapper ships an update every 2 months, and Ozlo Sleepbuds weekly. Most recently, SleepMapper was updated on September 19, 2026 and Ozlo Sleepbuds on September 22, 2026.

Other comparisons