Nightwise: CPAP Data Tracker

Nightwise reads your ResMed CPAP machine's SD card on your phone and tells you how last night went, in plain words. No account, no server, no cloud: everything stays on your phone.

LAST NIGHT AT A GLANCE
Open the app and see the three things that matter: hours used, breathing events an hour (AHI) and leak. A calm verdict reads them against the usual lines (4 hours or more, under 5 events an hour, leak under 24 L/min), with the reason in words when a night fell short. Every term is explained inline, one tap away.

THE WHOLE NIGHT
Pressure and leak through the night, the mask-on sessions, every event the machine flagged, and the breath-by-breath airflow around any event. Simple by default, detailed when you want it.

TRENDS WITHOUT PRESSURE
Hours, events, leak and pressure over 7, 30, 90 nights or all of them, plus the 4-hour count your clinic or insurer asks about. No streaks, no scores.

SETTING CHANGES
Nightwise spots when a pressure or setting changed on the card and shows the nights before and after, side by side, with plain numbers and no judgment.

A REPORT FOR YOUR CLINICIAN
A clean PDF to share or print: your use, the 4-hour count, averages, charts, settings and changes. Made on your phone.

YOUR NUMBERS ARE THE MACHINE'S OWN
The headline numbers come straight from your machine's daily summary, the same ones its screen shows. Nightwise cross-checks them against the detail files and tells you honestly when they differ.

WORKS WITH
ResMed AirSense 10, AirSense 11, AirCurve 10 and other ResMed machines that write STR.edf and DATALOG folders to the SD card. You need an SD card reader for your phone (USB-C or Lightning). Try the bundled sample card first if you like.

FREE AND PRO
Free: import your card, every night's own numbers, the newest 7 nights in full detail and the 7-night trends. Nightwise Pro adds every night in full detail, the breath-by-breath view, longer trends, the setting-change compare and the doctor report. Annual with a 7-day free trial, monthly, or a one-time lifetime unlock. Prices are shown in the app.

COMING, IN A LATER UPDATE
An optional "Explain this night" that writes a plain-words explanation of your numbers using your own ChatGPT plan, only if you connect one. It is built in but switched off until OpenAI admits Nightwise to its program; nothing is sent anywhere until you choose to connect.

NOT A MEDICAL DEVICE
Nightwise shows what your machine recorded. It never diagnoses and never suggests a pressure or setting change. Anything worth raising is worth raising with your sleep clinician.

Recent changes:
Small fixes and polish to keep Nightwise running smoothly.