Nightwise: CPAP Data Tracker

About Nightwise

Nightwise reads a ResMed CPAP machine's SD card on the phone and puts last night on one screen: a plain verdict with the night's own numbers (hours used, breathing events an hour, leak and pressure, read against the usual lines) and a strip of the week to step between nights. The whole night is one tap down (pressure and leak through the night, every flagged event, the breath-by-breath airflow).

Trends opens on a 30-night calendar with the 4-hour count clinics ask about, setting changes sit inside it with the nights before and after side by side, and the Report tab previews a clean PDF for the sleep clinician. The headline numbers are the machine's own, cross-checked against the detail files.

Local-first: no account, no server, everything stays on the phone. Free for every night's own numbers and the newest 7 nights in full; Nightwise Pro unlocks every night, the breath-by-breath view, longer trends and the report. Built in but switched off until OpenAI admits the app: an optional "Explain this night" on the person's own ChatGPT plan.