How to make the most of the myNarval app

myNarval is a simple daily companion app designed to support patient engagement. It allows you to record and reflect your sleep experience while using the Narval CC oral appliance and a compatible O₂ ring.

Rather than focusing on a single night, the goal is to build clearer picture of what happens when you wear your MAD, when you do not, and when other factors may have influenced your sleep.

What is a MAD?

A MAD, or mandibular advancement device, is an oral appliance worn during sleep. It helps support a more open airway by gently bringing the lower jaw forward^1–3. Narval^TM CC is one example.

1. Log MAD on/off accurately

If a night is tagged “MAD on” when you did not wear it – or if you wore it for only part of the night – the data displayed or therapy comparison views can become misleading.

Accurate logging helps myNarval show a fairer picture of your with-therapy versus without-therapy trend, which makes the comparison views more useful.

2. Use the journal as a clue tracker

The Sleep journal is where your sleep context comes to life. Good notes include alcohol, back sleeping, congestion, illness, travel, stress, late meals, reflux, or partial-night MAD use. These details can help explain why one night looked different from another.

3. See how your nights evolve

Comparison views can help you explore and visualize sleep-related information collected over different nights.

visualize nights with and without your Narval CC appliance
and explore the sleep-related information recorded for each night.

Looking at several nights together may provide a broader view of the information available in the app.

4. Use sleep reports to support conversations

Before follow-up visits with your dentist or doctor, you can export a PDF report and bring it with you. A report that combines trends, MAD on/off data, and journal notes can help your dentist, sleep clinician, or therapy provider understand the bigger picture faster and have a more useful discussion with you.

5. Remember what the app can - and cannot - do

myNarval is designed to help you access sleep-related information, stay engaged with therapy, and prepare for better conversations about your sleep. It can highlight trends, but it does not replace diagnosis, treatment decisions, or personal medical advice.

Making the most of the app's features

Record your Narval CC use in the app.
Use the Sleep Journal feature to keep a record of information you would like to remember about a particular night.
Explore information from different nights using the app’s comparison views.
PDF reports can be generated and shared at your discretion.

myNarval is not a medical device.

PROMOTIONAL MATERIAL – Narval CC is compliant with applicable regulations. Manufacturer: Resmed.
Local contact: Resmed. Please refer to the instructions for use for relevant information related to any contraindications, warnings and precautions

1036936/1 – 06/2026

References

Uniken Venema JAM, Rosenmöller BRAM, de Vries N, et al. Mandibular advancement device design: A systematic review on outcomes in obstructive sleep apnea treatment. Sleep Med Rev. 2021;60:101557. doi:10.1016/j.smrv.2021.101557
Manetta I, Ettlin D, Mayoral Sanz P, Rocha I, Meira e Cruz M. Mandibular Advancement Devices in Obstructive Sleep Apnea: An Updated Review. Sleep Sci. 2023;15. doi:10.5935/1984-0063.20210032
Vecchierini MF, Attali V, Collet JM, et al. Mandibular advancement device use in obstructive sleep apnea: ORCADES study 5-year follow-up data. J Clin Sleep Med JCSM Off Publ Am Acad Sleep Med.2021;17(8):1695-1705. doi:10.5664/jcsm.9308