Someone awake with you.
Most sleep apps are built for the evening. This one is built for 03:40.
One screen, one instruction, no menus. It does not try to get you back to sleep — chasing sleep at 3am is what turns one bad hour into five. The goal is getting through the hour.
Five breathing patterns, every one exhaling longer than it inhales. Rain, deep noise, a detuned drone and a 52bpm heartbeat, generated in the browser — no audio files, nothing to download.
Sentences written to still be true on the worst night, and narrated scripts where someone else is always doing the work — driving, keeping watch, writing it down.
Three bad weeks and three bad months feel identical from the inside. NabuSu keeps the record — nights, symptoms, doses you report — and exports it in one tap.
Install it once and it runs offline forever. Nothing is uploaded, there is no account, and the AI companion answers from the device unless you connect your own endpoint.