sd20 App
The Restaurant for Sleep and Dreams
An AI chef prepares sleep and dream recipes tailored to your wishes — in between sits overnight recording with the Traumschreiber forehead EEG. Free, for Android.
What the app does
- Overnight brain-activity recording with the Traumschreiber (forehead EEG)
- Sleep diary to spot patterns across nights
- Dream diary with alarms and guided exercises
- "Cook" — our LLM assistant with recipes for falling asleep and waking up
- Community and forum to exchange notes with others exploring their sleep
Sneak preview: try the current state
Early test preview (sneak preview): over the next weeks we will rebuild larger parts of the app, above all to make it more user-friendly and easier for beginners. The downloads here are mainly meant to show the current state.
Google Play
It updates itself automatically through the Play Store.
A major update of the app is coming at the end of October 2026. Until then, we strongly recommend installing the Nightly version.
Get it on Google PlayNew versions land on the Play Store only about once a month — Google reviews every update.
Nightly (test channel)
The fast channel for testers: new features land here immediately, so bugs are more likely. It runs alongside the Play release, with its own data, and updates itself afterward.
Nightly APK (64-bit) Nightly APK (32-bit)64-bit fits practically any phone from the last few years; 32-bit is for older tablets and phones. Android will ask for permission to install apps from this source on first launch — that's a one-time step.