How to Import Your CPAP Data on iPhone, iPad, or Android

Your CPAP Data Belongs on Your Phone

Most of us reach for our phones first thing in the morning. So when you want to check last night's CPAP data, you shouldn't need to dig out a laptop.

CPAP Clarity runs entirely in your phone's browser. There's no app to install, no account to create. You just need a way to get your SD card data into your phone. A small card reader is all it takes.

This guide walks you through the whole process, from pulling the SD card out of your machine to viewing your results on screen.

What You Need

You only need three things:

1. Your ResMed SD card. Your AirSense 10 or 11 (opens in new tab) uses a standard-size SD card (not the smaller micro SD). It stores every night of therapy data automatically.

2. A USB-C SD card reader. Most modern phones (iPhones 15 and newer, nearly all Android phones) have a USB-C port. A USB-C SD card reader (opens in new tab) plugs right in. They're small, cheap, and widely available.

3. For older iPhones with Lightning (iPhone 14 and earlier). You'll need a Lightning to SD card reader (opens in new tab) instead. Apple makes one, and there are third-party options as well.

That's it. No special software, no drivers, no subscriptions.

How to Remove the SD Card from Your Machine

Before you plug anything in, you'll need to pull the SD card out of your CPAP machine. Don't worry. Your machine continues recording to internal memory while the card is out, so you won't lose any data. Just remember to put it back when you're done.

ResMed AirSense 11: Look on the left side of the machine for a small hinged door. Open it and gently push the SD card inward. It will click and spring out slightly. Pull it the rest of the way with your fingers.

ResMed AirSense 10: The SD card slot is on the back panel, near the bottom. Same push-to-eject mechanism.

The card is a standard SD card, about the size of a postage stamp. Handle it by the edges and avoid touching the gold contacts.

iPhone and iPad (iOS 15 or Later)

Here's the step-by-step process for Apple devices.

1. Connect the reader and insert your SD card

Plug your USB-C (or Lightning) card reader into your phone. Insert the SD card into the reader. You should feel it click into place.

2. Open the Files app

On most devices, the Files app opens automatically when it detects an SD card. If it doesn't, find the Files app on your home screen (it has a blue folder icon) and open it. Tap Browse at the bottom, then look for your SD card under Locations. It may appear as "Untitled" or "NO NAME."

3. Confirm you can see the DATALOG folder

Tap on the SD card to open it. You should see several folders. The one you need is called DATALOG. Don't open it yet. Just confirm it's there.

4. Open CPAP Clarity

Switch to Safari and go to cpapclarity.com. You'll see the import area on the homepage.

5. Import your data

Tap "Browse for SD card folder" on the CPAP Clarity homepage. The Files picker will open. Navigate to your SD card, tap the DATALOG folder to select it, then tap Open in the top right.

6. View your results

CPAP Clarity reads and processes your data right on your phone. Within a few seconds, your dashboard appears with your AHI score, leak data, pressure charts, and personalized insights. All processing happens in your browser. Nothing is uploaded anywhere.

Android Phones and Tablets

Android has supported USB-C and external storage for years, so this process is straightforward.

1. Connect the reader and insert your SD card

Plug your USB-C SD card reader into your phone's USB-C port. Insert the SD card. Most Android phones will show a notification that external storage was detected.

2. Open CPAP Clarity

Open Chrome (or your preferred browser) and go to cpapclarity.com.

3. Import your data

Tap "Browse for SD card folder" on the homepage. Your phone's file picker will open. Navigate to the SD card (it may appear as "SD card," "USB storage," or similar). Select the DATALOG folder and confirm.

4. View your results

Your data loads and processes instantly. You'll see the same full dashboard, charts, and insights that desktop users get. The entire interface is designed to work well on mobile screens.

Troubleshooting

"I don't see the SD card in Files (or my file manager)"

First, unplug the card reader and reinsert it firmly. Make sure the SD card is fully seated (you should hear or feel a small click). Try a different orientation if the card doesn't seem to fit. If your phone still doesn't recognize the reader, try cleaning the USB-C port gently with a dry toothpick or compressed air. Lint buildup is a common culprit.

On iPhone, make sure you're running iOS 15 or later. Older iOS versions have limited support for external storage.

"CPAP Clarity says no data found"

This usually means you selected the wrong folder. Make sure you selected the DATALOG folder specifically, not the root of the SD card and not a subfolder inside DATALOG. The DATALOG folder contains dated subfolders with your nightly session files.

"My phone doesn't have USB-C"

If you have an older Android phone with micro-USB, you can use a micro-USB OTG (On-The-Go) adapter combined with a standard USB SD card reader. OTG adapters are inexpensive and available at most electronics retailers.

For iPhones with Lightning ports (iPhone 14 and earlier), use a Lightning to SD card reader (opens in new tab).

"The import seems stuck or slow"

If you have many months of data on your SD card, the initial import may take 10 – 15 seconds on older phones. Let it finish. Subsequent visits will be faster because CPAP Clarity stores your processed data locally using your browser's built-in storage.

Recommended Gear

Here are the accessories that make phone-based CPAP analysis easy.

USB-C SD card reader. This is the one essential purchase. Look for a reader that supports standard SD cards (not just micro SD). Compact readers that fit on a keychain are convenient for travel. Browse USB-C SD card readers on Amazon (opens in new tab).

Lightning SD card reader (older iPhones). If you have an iPhone 14 or earlier, Apple's official Lightning to SD Card Camera Reader works reliably. Third-party options are also available at lower price points. Browse Lightning SD card readers on Amazon (opens in new tab).

A spare SD card. Instead of removing your only SD card each time, keep a spare. Swap cards periodically and import the full one at your leisure. A 32GB SD card (opens in new tab) holds years of CPAP data and costs just a few dollars.

Start Exploring Your Data

Now that your CPAP data is loaded on your phone, you have the full CPAP Clarity experience at your fingertips. Browse your AHI breakdown, check your leak trends, read your personalized insights, and even download a PDF report to bring to your next doctor's appointment.

All from your phone. All private. All free.

Analyze your CPAP data now →