useful apps for tracking REM sleep stages

Understanding Sleep Stages Sleep is divided into several stages, with REM (Rapid Eye Movement) sleep being one of the most crucial phases for cognitive functions and emotional health. During REM sleep, the brain is highly

Written by: Hanen Saadi

Published on: May 5, 2026

Understanding Sleep Stages

Sleep is divided into several stages, with REM (Rapid Eye Movement) sleep being one of the most crucial phases for cognitive functions and emotional health. During REM sleep, the brain is highly active, which is essential for memory consolidation, learning, and mood regulation. Tracking REM sleep can provide deeper insights into overall sleep quality and help identify issues like insomnia or sleep apnea.

This article explores various applications specifically designed to track REM sleep stages, detailing their features, benefits, and user experience.


1. Sleep Cycle

Overview: Sleep Cycle is an intelligent alarm clock that tracks sleep patterns and cycles.

Key Features:

  • Sleep Tracking: Monitors sleep patterns using sound analysis.
  • REM Sleep Analysis: Provides insights into REM sleep duration and overall quality.
  • Smart Alarm: Wakes you up at the lightest sleep phase within a specified time window.
  • Sleep Aid: Offers soothing sounds to help users fall asleep.

User Experience: Users appreciate the intuitive interface, and the smart alarm feature has received positive feedback for helping users feel more refreshed upon waking.


2. Pillow

Overview: Pillow is a sleep tracking app that combines comprehensive analysis with a user-friendly interface.

Key Features:

  • Sleep Cycle Tracking: Analyzes all sleep stages, including REM sleep.
  • Heart Rate Monitoring: Offers insights into heart rate throughout the night, reflecting physical health.
  • Audio Recording: Captures sounds during sleep to identify disturbances.
  • Smart Alarm: Similar to Sleep Cycle, it wakes users at the optimal time.

User Experience: Users highlight the accuracy of sleep tracking and the aesthetic design of the app, making sleep data easy to understand.


3. SleepScore

Overview: SleepScore is designed to improve sleep quality through detailed analysis and actionable insights.

Key Features:

  • Sleep Tracking: Uses non-contact sensors to monitor sleep stages, including REM and deep sleep.
  • Personalized Coaching: Offers tailored recommendations based on sleep data.
  • Sleep Journal: Users can log their habits and emotions, linking them to sleep patterns.
  • Sleep Score: Provides an overall score on sleep quality, which can be tracked over time.

User Experience: Many users express satisfaction with the extensive data provided and the ability to observe patterns related to lifestyle changes.


4. Sleep as Android

Overview: This app provides extensive sleep tracking capabilities and integrates well with various wearable devices.

Key Features:

  • REM Tracking: Offers detailed insights into REM cycles and interruptions.
  • Snore Detection: Analyzes snoring patterns and provides feedback.
  • Integration: Works with smart devices like Philips Hue for a conducive sleep environment.
  • Sleep Talk Recording: Records sounds during sleep for further analysis.

User Experience: Users appreciate the app’s robust functionality and adaptability to different devices, ensuring a comprehensive sleep tracking experience.


5. Calm

Overview: While Calm is primarily known for meditation and mindfulness, it offers sleep stories and tracks sleep quality.

Key Features:

  • Sleep Stories: Engaging narratives designed to help users fall asleep.
  • Sleep Tracking: Basic tracking features that overview sleep quality.
  • Meditation: Guided meditations focusing on sleep improvement.

User Experience: Calm has become popular for its calming effects, though users looking for comprehensive tracking might find it less robust compared to specialized apps.


6. DreamLab

Overview: DreamLab focuses on the science of sleep with a unique twist: it is powered by the computing capacity of users’ smartphones.

Key Features:

  • Sleep Tracking: Monitors various sleep stages through advanced algorithms.
  • Data Utilization: Contributes to cancer research through processing power while users sleep.
  • User Engagement: Combines sleep data collection with innovative research efforts.

User Experience: Users enjoy the dual functionality of improving their sleep while contributing to scientific research.


7. Endel

Overview: Endel takes a unique approach by generating personalized soundscapes designed to help users sleep better.

Key Features:

  • Soundscapes: Uses AI to create adaptive sound environments to enhance sleep.
  • Focus on REM: Promotes deeper sleep and better management of sleep stages.
  • Integration with Health Data: Works with wearable devices to adjust soundscapes based on sleep patterns.

User Experience: Users report a positive impact on sleep quality, particularly enjoying the adaptive nature of the soundscapes.


8. Sleep Better by Runtastic

Overview: Initially designed for fitness enthusiasts, this app includes a comprehensive sleep tracking feature.

Key Features:

  • Sleep Tracking: Monitors sleep cycles, including depth and REM phases.
  • Sleep Notes: Allows users to log habits that might impact sleep.
  • Smart Alarm Clock: Wakes users during optimal sleep phases.

User Experience: Users enjoy the ability to correlate exercise routines with sleep patterns, providing a holistic view of health.


9. Wind Down

Overview: Wind Down emphasizes pre-sleep routines to enhance sleep quality.

Key Features:

  • Routine Tracker: Encourages establishing healthy habits before bed.
  • Sleep Stages Monitoring: Tracks and analyzes sleep stages, including REM.
  • Relaxation Techniques: Offers guided methods to prepare the mind for sleep.

User Experience: Users favor the seamless integration of sleep advice with tracking, focusing on holistic sleep improvement.


10. Sleeply

Overview: This app focuses on generating sleep-friendly sounds to improve overall sleep quality.

Key Features:

  • Sound Library: Offers diverse sounds and ambient noises that can help you fall asleep easier.
  • Sleep Tracking: Analyzes sleep duration and quality, subtly tracking REM phases.
  • Integration with Smart Devices: Works with smart home devices to auto-adjust lighting and temperature.

User Experience: Users love the variety of soothing sounds, claiming they enhance the ease of falling asleep.


Additional Considerations

While all the apps listed above provide unique features and functionalities, there are some factors to consider to optimize your sleep tracking experience:

Compatibility with Wearables

Some users prefer apps that can integrate seamlessly with wearable devices like smartwatches and fitness bands. This can enhance sleep data accuracy significantly by collecting heart rate and movement data throughout the night.

User Preferences

Personal preference plays a crucial role in selecting an app. Some users may prefer a minimalist approach with basic tracking, while others might opt for comprehensive analysis and insights.

Privacy and Data Security

As health apps collect sensitive data, user privacy and data security are paramount. Always read the privacy policy and understand how your data will be used and stored.

Free vs. Paid Versions

Many apps offer basic features for free; however, premium versions typically provide advanced functionalities. Assess your needs and possibly test the free versions before committing to any subscriptions.


Final Thoughts

With the growing body of research highlighting the importance of REM sleep for overall health, tracking sleep stages has become more critical than ever. Utilizing these applications can provide valuable insights into your sleep quality, performance, and overall well-being.

By choosing the right application that aligns with your lifestyle and preferences, you can better understand your sleep patterns and, consequently, optimize your health.

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