# SleepMapper vs Ozlo Sleepbuds

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.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

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.

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

## The numbers

| Metric | SleepMapper | Ozlo Sleepbuds |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (3.8K ratings)](https://appshunter.io/ios/app/sleepmapper/id1258577276/reviews) | [4.7 (2.6K ratings)](https://appshunter.io/ios/app/ozlo-sleepbuds/id6447005546/reviews) |
| Number of ratings | **3.8K** | 2.6K |
| Positive reviews | 30.2% of reviews | **44.6% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Weekly** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 193 MB | 258 MB |
| Requires iOS | **16.6** | 18.0 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 12+ |
| Developer | [Philips](https://appshunter.io/developer/355645429) | [Drowsy Digital Inc.](https://appshunter.io/developer/1679994355) |

## What reviewers say

### SleepMapper

[App page](https://appshunter.io/ios/app/sleepmapper/id1258577276)

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:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

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

**What reviewers complain about**

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

**Reported bugs**

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

**Requested features**

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


### Ozlo Sleepbuds

[App page](https://appshunter.io/ios/app/ozlo-sleepbuds/id6447005546)

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

**In-app purchases:** none

**What reviewers like**

- 💤 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

**What reviewers complain about**

- 🔌 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

**Reported bugs**

- 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**

- 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


## Frequently asked 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.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*