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.