sleep² sleeptracker & analysis

In-app purchases
3.5
300 reviews
10K+
Downloads
Content rating
Everyone
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About this app

sleep² is your personalized sleep tracker and sleep training.

sleep² is more than just a tracker, we also offer sleep training combined with sleep analysis. Built on extensive research, sleep² is designed for those who prioritize high-quality regeneration.

The sleep² intensive program is a medically certified product approved in the EU, specifically designed for people suffering from acute sleep disorders such as insomnia. Our evidence-based approach has already helped thousands of individuals improve their sleep quality through structured, step-by-step sleep tracking and personalized sleep training.

sleep² Pro: Our sleep tracker continuously adapts to your input and evolves over time. Based on your sleep analysis, you’ll receive personalized information, tips and sleep training.

Our sleep tracker options:
- Option 1: sleep tracker with Polar biodata sensor (H10 or Verity Sense) for the most exact sleep analysis.
- Option 2: Import your data from other devices via Apple Health, Google Health or other supported sleep tracker.
- Option 3: Manually log your nights in the diary.
Regardless of which method you choose, sleep² analyzes your data and provides you with a detailed report.

At the start, you will answer some questions about your current status and receive a sleep training. Based on your data and the program you choose, you’ll have access to:
- Detailed recommendations and tips based on your daily sleep analysis
- Short videos with practical knowledge for optimized sleep training
- Audio relaxation exercises to help you find inner balance
- An interactive chatbot to help you optimize your habits and understand your sleep analysis better
- Updates from science in regularly updated blog posts

sleep² seamlessly syncs with Apple Health & Google Health, allowing you to easily integrate your existing data into your profile. You will have everything important at a glance and can track your progress across platforms.

Unlike traditional labs that often involve long waiting times, we give you access to a precise sleep analysis anytime. Our innovative algorithm analyzes your data each night with a high precision sleep tracker and continuously provides sleep analysis insights and a customized sleep training.

Maximize your experience by using sleep² with a sleep tracker to unlock the full potential of the app. Don’t have a sensor? No problem. You can purchase a compatible sensor directly through the app.

Downloading the App is free and gives you access to basic features. For full access to advanced features like highly accurate analysis and training, a flexible subscription is available. Choose between a monthly or yearly membership – cancel anytime.

Download sleep² now and start your journey to a healthier, more fulfilling life.
Updated on
Apr 17, 2025

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
Learn more about how developers declare sharing
This app may collect these data types
Personal info, Health and fitness and 2 others
Data is encrypted in transit
You can request that data be deleted

Ratings and reviews

3.6
290 reviews
Roman
October 3, 2024
The biggest problem for me is that 90% of the nights it shows my awake time as 0, which is impossible. I am using verity sense and I dont know how it gets it so wrong. Also, I dont like big blurred cards reminding that you have to buy a subscription, you can make it more subtle. The first main screen seems use less, and the app does not allow to change the start screen. So for me it makes no sense for me to buy a subscription or even continue using the app which gets the main info(sleep) wrong.
2 people found this review helpful
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Nukkuaa
October 12, 2024
Hi Roman, danke für dein Feedback. Beachte bitte dass die Wachzeit die du siehst nur Phasen länger als 2 Minuten beinhalten, denn das sind die Wachphasen die die meisten Menschen auch bewusst wahrnehmen. In deiner Gesamtschlafzeit ziehen wir aber natürlich alle kurzen Wachepochen ab. Falls dir das nicht hilft schreib uns gerne auf hello@sleep2.com
Chris Moeller
June 17, 2024
Can't see if it works until you subscribe. $23 /month/ costs a fitbit every 4 months. Does it work? Can't tell without subscribing. If it worked great, had a trial, and didn't cost more than oaura, sleep8, etc subscriptions ($10/ month would be high), would be 5*. Shows quality at 100%, which is impossible with waking up multiple times. Really need to find a useful sleep tracking app, sadly this doesn't appear to be it.
11 people found this review helpful
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Nukkuaa
August 20, 2024
Dear Chris, thanks for your review. Please write us at hello@sleep2.com and we look directly into the issues you seem to have. I am happy to help and find a solution with you. **UPDATE: From today you also see your heart rate and heart rate variability (HRV) in the App night by night indicating your recovery potential! ** Best Manuel from sleep²
Jeff Huber
September 12, 2024
I really wanted to like this because of the accurate sleep stage tracking but found it wasn't a fit. I found wearing my Polar H10 while sleeping uncomfortable and wondered if just wearing the H10 was negatively impacting my sleep. Also, I found the graphs not as good as Garmins, and the price too high. I see they finally added min HR and HRV which are good steps. I would like to see better graphs, reduced costs, and more features. If they do that, maybe I would try again with armband sensor
1 person found this review helpful
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Nukkuaa
September 20, 2024
Hi! Thanks for your feedback! We understand your concerns about pricing but please understand that the related research and development is substantial. However, we are constantly working towards new features and a new big update is around the corner. You will soon see all past hypnograms and HR graphs, factor feedback, etc. Please stay tuned!

What’s new

General improvements and bug fixes