sd20: Schlaf&Traum-Restaurant

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About this app

sd20 is the app from the Institute of Sleep and Dream Technologies (ISDT) – a citizen science toolkit for self-monitoring, education, and research on sleep and dreams.

Even without any additional hardware, sd20 offers numerous tools:

• Sleep and dream diary
• Alarm clock with customizable sounds
• Relaxation and sleep sounds
• Napping dream incubation
• Creativity test (Number Remote Association Test)
• Questionnaires, e.g., on chronotype
• "Cook" – an AI assistant that suggests recipes and routines for good sleep hygiene

Those who own the Dream Writer – a portable forehead EEG device from the Institute – can also record and analyze their own sleep measurements, such as sleep stages and eye movements.

sd20 is not a medical device and does not replace medical diagnosis, advice, or treatment. The app is intended for self-monitoring, education, and the scientific exploration of sleep and dreams.

More information about data protection: https://sd20.org/isdt/de/privacy/
Sleep & dream diary, alarm clock, sounds, cooking assistant and more.
Updated on
Aug 17, 2026
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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.
  • This app may share these data types with third parties
    Location, Personal info and 6 others
  • This app may collect these data types
    Location, Personal info and 6 others
  • Data isn’t encrypted
  • Data can’t be deleted

What’s new

Aufgeräumtes Profil und die App startet jetzt auf Deutsch. Kleinere Verbesserungen.
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Everyone
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App support

About the developer
ISDT gemeinnützige UG (haftungsbeschränkt)
googleplaystore@sd20.org
Eifflerstr. 43 22769 Hamburg Germany
+49 1522 2093558