Comparison

Savior Heat 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

Savior Heat

Control smart Bluetooth heated apparel and accessories. Adjust heating power, set constant temperatures, and manage countdown timers for personalized comfort.

Highlights
  • Control Bluetooth heated hats, clothes, gloves, socks, and insoles
  • Set heating gear power
  • Configure constant temperature settings
  • Manage heating countdown timers
  • Personalized comfort control
Features
Read full description

The Intelligent Heating App can add smart Bluetooth heating hats, clothes, gloves, socks, and insole lights. Through the App, you can set the intelligent heating device heating gear power, constant temperature temperature, heating countdown and other functions.

About

Ozlo Sleepbuds

Tiny, comfortable earbuds designed for sleep. They offer all-night battery, noise blocking, and audio streaming. The companion app personalizes settings and provides sleep data reports.

Highlights
  • Ultra-comfy, low-profile design
  • All-night battery life (up to 14 hours)
  • Noise blocking for disruptive sounds
  • Bluetooth audio streaming
  • Personal in-ear alarm
  • Sleep modes and timer
  • Sleep pattern and environmental insights
Features
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

Savior Heat4 screens
Ozlo Sleepbuds4 screens

Verdict

The call

The clearest difference is rating: Ozlo Sleepbuds at 4.7 against Savior Heat's 2.7. Ozlo Sleepbuds also leads on update cadence (weekly vs every 15 months) and ratings volume (2.8K vs 10). Savior Heat's advantage is review sentiment (80% vs 44%) and iOS requirement (13.0 vs 18.0). On price, ads, in-app purchases and monetization model 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

Ozlo Sleepbuds holds the better App Store score, 4.7 against 2.7. That said, the two scores are not equally well evidenced: Ozlo Sleepbuds has 2.8K ratings behind it against 10, so its average is the more settled of the two. Written reviews complicate that: 80% of Savior Heat's written reviews are positive against 44% of Ozlo Sleepbuds's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Savior Heat ships an update every 15 months, Ozlo Sleepbuds weekly. Both last shipped on November 3, 2026.

Scorecard5 real differences · 5 level
Savior Heat versus Ozlo Sleepbuds: the parameters behind the verdict, then further details
ParameterSavior HeatOzlo Sleepbuds
PriceFreeFree
Rating2.7 (10 ratings)4.7 (2.8K ratings) — better
Positive reviews80.0% of reviews — better44.4% of reviews
Number of ratings102.8K — better
Update frequencyEvery 15 monthsWeekly — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPodiPhone, iPad
Requires iOS13.0 — better18.0
Further details — not scored
Size25 MB275 MB
Age rating4+12+
Developer伟 张Drowsy Digital Inc.

Customer experience

Savior Heat

All ratings10 ratings
Positive50.0%
Neutral0.0%
Negative50.0%
Written reviews5 reviews
Positive80.0%
Neutral0.0%
Negative20.0%

Ozlo Sleepbuds

All ratings2,803 ratings
Positive92.8%
Neutral1.7%
Negative5.5%
Written reviews385 reviews
Positive44.4%
Neutral13.5%
Negative42.1%

Bugs and requests

Savior Heat

Not enough reviews yet to summarise bugs or requests.

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

Savior Heat

No in-app purchases

None

Ozlo Sleepbuds

No in-app purchases

Questions

Is Savior Heat free?
Savior Heat 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, Savior Heat or Ozlo Sleepbuds?
Ozlo Sleepbuds is rated higher. Savior Heat averages 2.7 out of 5 from 10 ratings, while Ozlo Sleepbuds averages 4.7 from 2.8K ratings.
Do Savior Heat or Ozlo Sleepbuds have ads?
Neither Savior Heat nor Ozlo Sleepbuds shows ads.
Which is updated more often, Savior Heat or Ozlo Sleepbuds?
Savior Heat ships an update every 15 months, and Ozlo Sleepbuds weekly. Most recently, Savior Heat was updated on November 3, 2026 and Ozlo Sleepbuds on November 3, 2026.

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