Support & Guides
Nonin Oximeter
Breathe RM can collect your oxygen saturation data either through smartwatches or by connecting directly to the Nonin pulse oximeter. This guide focuses on setting up your Nonin device. If you're using a different pulse oximeter or a smartwatch, please return to the guides overview.
Step 1
Select Oximetry from settings
Make sure that your phone has Bluetooth turned on. Open Project Breathe app and tap the ‘settings cog’ in the top right hand corner of the dashboard. Under ‘My Devices’ tap on ‘Oximetry’
Step 2
Place oximeter on your finger
Turn the Oximeter on by popping it on your finger. Device search will begin. Breathe app may ask you for permission to use your location. Don’t worry – no information on your whereabouts is captured or stored, but this permission is required for connecting to certain Bluetooth devices. Tap ‘OK’ to carry on.
Step 3
Select your oximeter
Once an Oximeter has been found, the device name will appear in the list with a name which begins with “Nonin3230_”. Tap the device you want to add. *Important: If the device asks to pair with your phone, accept this pairing request.
Step 4
Set up complete
That’s it! Either go ahead and record your blood oxygen straight away or save and exit.
Step 5
Oximeter Saved
When you return to ‘Settings’ you should see your oximeter device name saved in ‘Oximetry’.
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Frequently Asked Questions
Why does Breathe RM app keep aking me to sign in?
Breathe RM is no longer being actively supported.
From 4 March 2026, we will:
• Stop issuing software updates
• Stop providing technical support
• Disable data synchronisation between the app and our secure servers
• Begin removing the app from sale and download from the app stores
If you already have the Breathe RM app installed on your device, you may continue to use it locally for personal reference.
To help the app continue working on your device, please disconnect your Breathe account in the app settings. Any accounts still connected on 20 March 2026 will be disconnected by Magic Bullet.
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