Nap Alarm helps you take smarter, healthier naps using your watch's built-in stress sensor. How it works: • Start a nap from your watch — a monitoring screen shows the current time, phase, and elapsed time • Auto detect: the app waits for your stress level to drop below a set threshold before starting the nap countdown — confirming you actually fell asleep • If you wake up naturally (stress rises back above threshold), the alarm is silently cancelled — no unnecessary buzz • Smart wake: detects rising stress in the final minutes before your max nap time • If stress never drops within the max nap window, the nap is silently cancelled • Auto Detect Schedule: restrict monitoring to work hours only (e.g. 9:00–17:00) to save battery Settings (configurable on-watch): • Max Nap duration: 20 / 25 / 30 / 45 / 60 / 90 min • Stress threshold: 20 / 25 / 30 / 35 / 40 • Smart Wake toggle + window (3 / 5 / 7 / 10 min) • Auto Detect Schedule toggle + start & end hour The background service runs only when a nap is active and within schedule, minimising battery usage.