sleep² sleeptracker & analysis

In-app purchases
585 reviews
Content rating
PEGI 3
10K+
Downloads
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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.
Sleep tracker & Sleep analysis, Sleep training for sleep problems, sleep better!
Updated on
30 Oct 2026

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

571 reviews
michael nickle
5 August 2026
The app is sleek and provides what it says it does. Though the scoring systems a bit confusing. The team is especially helpful and kind with any issue you might have. Highly recommended if youre looking to collect data on yourself. The only real issue i found is that the data isnt yours per se, if you stop paying, you lose access. Not really a huge deal for most users but still could be better.
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Nukkuaa
21 August 2026
Hi Michael, thanks for your review! We're glad the app delivers what it promises and really appreciate the kind words about our support team:) Good news: we've recently updated our subscription model - the free version now includes much more features and your data stays yours even if you stop paying
Sergio Buda
10 July 2026
H10 + Sleep². Removed the strap for 30s in the morning → the whole night was marked invalid and lost. No partial save, no re-import from the sensor's own memory (H10 stores 30h!). Once my phone died overnight and the app recovered the full night on reboot — so recovery clearly can work. Two fixes needed: keep the valid part when the connection breaks at the end, and let paid data actually be recoverable instead of silently discarded.
3 people found this review helpful
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Nukkuaa
13 July 2026
You’re right:H10 has strong internal memory.For our algorithm to analyze data correctly,sessions must be started/ended in sleep².If issues occur at session end,recovery can fail-we’re sorry&working on it.Free users also keep good data access after a subscription ends.Please contact us at hello@sleep2.com if that's not the case-we'll take care of it
Ben Smith
21 May 2026
Not very intuitive at all. Brought a polar verity sense to use with this app and can't get it to connect. Was going to pay for full membership but now I don't think so. I was so excited to use this!!! Right I've worked it out now and have brought the membership. For anyone else who struggles i had Bluetooth paired it with my phone which it does say not to do and as soon as i deleted the pairing the sleep2 app picked up the sense straight away. Sorry about that developers i was too excited!!!
1 person found this review helpful
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Nukkuaa
21 May 2026
Hello Ben,we’re sorry the setup was frustrating!The connection can usually be fixed quickly:1)Update the sensor and disconnect it from Polar Flow&phone’s Bluetooth settings.2)Then connect it only in sleep² via Profile.Please contact us at hello@sleep2.com,we’d be happy to help you individually and give you the experience you were looking forward to

What's new

- Free users can now save their sleep diary entries to Health Connect
- If no valid sensor recording is found for a night, you can now enter your diary entry yourself or discard the night
- Fixed the oversized sunrise animation on the sleep screen
- Bug fixes, performance improvements, and general optimizations