Femometer Ring Air

The lighter way to understand your body

Lightweight. Body-literate. Made for daily wear.

Your body has a rhythm.
Ring Air helps you read it.

Sleep, cycle, stress, temperature, and daily energy are connected. Ring Air brings these signals together, so you can better understand your body from day to day.

Woman sleeping while wearing Femometer Ring Air with a sleep score visualization

SLEEP

See your nights alongside your cycle.

Woman wearing Ring Air with women’s health and ovulation visualizations

WOMEN’S HEALTH

Follow cycle phases, temperature shifts, and symptoms.

Woman staying active while wearing Femometer Ring Air with an active energy visualization

ACTIVITIES

See how movement and recovery change throughout the week.

Woman wearing Ring Air with daily stress trend visualizations

STRESS

Notice how your body responds throughout the day.

Woman wearing Ring Air with a heart-rate range visualization

HEART

Monitor heart rate, HRV, and oxygen trends in one daily view.

Woman wearing Ring Air with a body-temperature trend visualization

HOT FLASH

View logged hot flashes alongside temperature and nighttime trends.

Width

-12.5% compared with Gen 2

Thickness

-1.9% compared with Gen 2

Weight

-15% compared with Gen 2

*Weight: 3.3-4g (Varies By Size)
*Thickness: (Size 6) 2.85mm, (Size 7-13) 2.65mm

15M+

Users

have used Femometer to understand their cycles, fertility, and health patterns.

Femometer app cycle and sleep insights

NO Subscription Required

The Ring Air captures the signals. The Femometer app helps explain what they may mean for your cycle, sleep, and daily routine.

SoMindAI Heath Coach

Know your body. Understand your patterns.

SoMind uses AI to connect your sleep, stress, activity, and recovery trends, helping you better understand your body and take action.

*AI features require a paid subscription.

SoMind AI health coach app insights
Rose Gold Femometer Ring Air finish
Rose Gold Femometer Ring Air finish

Choose Your Finish

Rose Gold and Silver fit effortlessly into your everyday style.

Expert Support for Your Health Journey

  • Portrait of Dr. Jan Rydfors

    Dr. Jan Rydfors

    OB-GYN & Fertility Specialist

    MD, Stanford University School Of Medicine

  • Portrait of Alice D. Domar

    Alice D. Domar

    Ph.D., Health Psychology

    Associate Professor, Harvard Medical School

  • Portrait of Jessica Campbell

    Jessica Campbell

    Functional Nutrition Practitioner

    MS, Human Nutrition & Functional Medicine

Trusted by Women. Loved in Daily Life.

Real stories from Femometer Smart Ring users.

  • Ring Air customer @katysimmonsss sharing her daily experience
    @katysimmonsss
  • Ring Air customer @saavvvyyy sharing her daily experience
    @saavvvyyy
  • Ring Air customer @sierraphy sharing her daily experience
    @sierraphy
  • Ring Air customer @its_sofyrodriguez sharing her daily experience
    @its_sofyrodriguez
  • Ring Air customer @stylebybrimarie sharing her daily experience
    @stylebybrimarie
  • Ring Air customer @merry.berryy sharing her daily experience
    @merry.berryy
  • Ring Air customer @cassandrabotnick sharing her daily experience
    @cassandrabotnick
  • Ring Air customer @mrs.kay.marie sharing her daily experience
    @mrs.kay.marie

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*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.

@2025 Femometer. All rights reserved.