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Being builtTheme 3: Body and head

Four Hours Fine

A sleep experiment on one person: me

Mark generated from the name Four Hours Fine
No public link

A personal instrument, partly built; no public build.

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A native SwiftUI iPhone app for an N=1 experiment: two weeks of short nights, then two weeks of full ones, with morning and evening check-ins of 10–30 seconds. Built so far: the home screen, sleep entry with a custom time wheel and a night band drawn live, the morning check-in, and a dev panel that fakes any hour or experiment day. The evening check-in, the analysis dashboard and sync exist only in the spec.

Detail

The last rule of the spec governs every feature: nothing gets added unless it helps answer what happens to me on different amounts of sleep.

Started
September 2026
Last change
Commits
34
Stack
Swift 6, SwiftUI, XcodeGen, XCTest, Figma
Theme
3 · Body and head
screens 27public 6archive 11last change NBDyour time --:--:--build 2026-10-03 c9a9222