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Wesper is a Special Mention on TIME's Best Inventions of 2026
Wesper
    • Wesper LabDirect respiratory data from two patches, with no nasal cannula.
    • Wesper LitePPG-based testing in a ring that is easy to wear.
    • How Wesper WorksThe managed workflow, from order to follow-up.
    • Provider SolutionsEverything Wesper runs for your clinic.
    95%+ AHI Correlation to PSG See the validation behind Wesper Lab and Wesper Lite. Explore Validation
    • ValidationPeer-reviewed accuracy against in-lab PSG.
    • ResearchWesper's clinical research program.
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    The Journal Clinical research, case studies and sleep medicine news. Read the Journal
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User Manual

To download our Wesper Lab User Manual (2025), please click here.

To download our Wesper Lite Use Manual (2026), please click here.

Wesper

Personalized sleep testing. Personalized care.

Wesper Weekly

Research, releases and sleep medicine news, once a week.

Products

  • Wesper Lab
  • Wesper Lite
  • How Wesper works
  • Provider solutions

Solutions

  • Sleep clinics
  • Hospitals
  • Primary care
  • DME and IDTF
  • Bariatric
  • GLP-1 programs

Evidence

  • Validation
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  • The Journal
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Wesper Lab (K203343) and Wesper Lite, powered by Cassie (K252628), are FDA-cleared. Indicated for adult use only.

Citations

95%+ AHI correlation to PSG: Sleep Medicine 2025; JCSM 2023. Wesper Lite: Cassie (K252628), the engine behind Wesper Lite. FDA 510(k) summary: multi-site retrospective validation in 474 independent test subjects from the National Sleep Research Resource; AHI Pearson r = 0.96 (95% CI 0.95 to 0.96) vs. polysomnography. FDA record

Wesper Lab validation: Raphelson, J., Ahmed, I., Ancoli-Israel, S. et al. Evaluation of a novel device to assess obstructive sleep apnea and body position. J Clin Sleep Med 19, 1643-1649 (2023). doi.org/10.5664/jcsm.10644

Automatic scoring vs. provider manual scoring (r = 0.98): Sleep Medicine 2026.

99%+ patient success rate and under 5 days from order to successful test: Wesper, Q3 2026.

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User Manual
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