Savior Heat vs Ozlo Sleepbuds
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Savior Heat
Control smart Bluetooth heated apparel and accessories. Adjust heating power, set constant temperatures, and manage countdown timers for personalized comfort.
- Control Bluetooth heated hats, clothes, gloves, socks, and insoles
- Set heating gear power
- Configure constant temperature settings
- Manage heating countdown timers
- Personalized comfort control
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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.
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.
- 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
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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
Verdict
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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
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.
Savior Heat ships an update every 15 months, Ozlo Sleepbuds weekly. Both last shipped on November 3, 2026.
| Parameter | Savior Heat | Ozlo Sleepbuds |
|---|---|---|
| Price | Free | Free |
| Rating | 2.7 (10 ratings) | 4.7 (2.8K ratings) — better |
| Positive reviews | 80.0% of reviews — better | 44.4% of reviews |
| Number of ratings | 10 | 2.8K — better |
| Update frequency | Every 15 months | Weekly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 13.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 25 MB | 275 MB |
| Age rating | 4+ | 12+ |
| Developer | 伟 张 | Drowsy Digital Inc. |
Customer experience
Savior Heat
Ozlo Sleepbuds
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
Savior Heat
No in-app purchases
Ozlo Sleepbuds
No in-app purchases
Questions
Is Savior Heat free?
Is Ozlo Sleepbuds free?
Which has better reviews, Savior Heat or Ozlo Sleepbuds?
Do Savior Heat or Ozlo Sleepbuds have ads?
Which is updated more often, Savior Heat or Ozlo Sleepbuds?
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