Many people suspect they might have sleep apnea, especially if they snore loudly, wake up tired, or their partner notices pauses in breathing during sleep. But before committing to a full sleep study, there are now several free screening tools that can help you get a clearer picture of your sleep health.
While these methods don’t replace a formal diagnosis, they can be a good starting point to decide whether you should take the next step toward a professional assessment.
1. Sleep Apnea Notifications on Apple Watch
The latest Apple Watch Series 9, Ultra 2, and SE 3 include a Sleep Apnea Notifications feature. When you wear the watch to bed, it can detect patterns in your breathing using built-in sensors.
If your breathing shows frequent disturbances that may suggest sleep apnea, you’ll receive a notification after consistent findings over about 30 nights of wear.
You’ll need:
- An Apple Watch Series 9, Ultra 2 or SE 3
- The latest iOS and watchOS updates
- “Track Sleep with Apple Watch” turned on
If you receive an “Elevated Breathing Disturbances” alert, it’s best to bring the data to your GP or sleep specialist for review.
2. Sleep Apnea Risk Detection on Samsung Galaxy Watch
For Android users, Samsung’s Galaxy Watch7 and Ultra come with a Sleep Apnea Risk Detection feature within the Samsung Health Monitor app.
When worn during sleep for two nights within 10 days, the watch tracks your breathing and oxygen patterns to assess the risk of moderate to severe obstructive sleep apnea.
If signs of OSA are detected, the app will prompt you to seek further medical evaluation.
You’ll need:
- A Galaxy Watch running Wear OS 5.0 or later
- A paired smartphone running Android OS 9.0 or later
- The Samsung Health Monitor app installed and updated
Results can vary depending on other health factors such as flu, allergies, or respiratory conditions, so it’s best to interpret your data with your doctor’s guidance.
3. SnoreLab App (iOS & Android)
If you don’t have a smartwatch, the SnoreLab app is a simple, widely used tool that records your snoring sounds using your phone’s microphone.
It gives you a Snore Score, showing how loud and frequent your snoring is through the night. The app also helps you identify triggers such as alcohol, congestion, or sleeping position, and lets you compare changes over time as you try different remedies.
While SnoreLab doesn’t measure oxygen levels or detect apnea events directly, it can highlight snoring severity patterns that suggest a need for further investigation.
When to Move Beyond Free Screening
Free tools can give you useful insights, but they cannot confirm whether you have sleep apnea. If you consistently receive alerts, score high on snoring intensity, or continue to feel unrefreshed after sleep, it’s important to follow up with a proper assessment.
Next Step: Sleep Studies at O2 Lung Centre

At O2 Lung Centre, we offer two medically supervised options to help confirm your diagnosis:
- O2 Home Sleep Study – A convenient, doctor-guided test you can do in your own bed with professional interpretation.
- O2 SleepWell Laboratory – An in-clinic sleep study for patients who need more detailed monitoring or advanced evaluation.
These studies are conducted under the supervision of our sleep specialist, ensuring accurate results and clear guidance on treatment if needed.
If you or your patients suspect sleep apnea, consider using the above tools as a first step, then consult our team for a comprehensive assessment.
Screening Questionnaire
Take this short questionnaire to better understand your sleep habits and possible sleep apnea risks. You can share your results with your GP or healthcare provider to support further evaluation and discussions about the best next steps for your sleep health.




