Femometer

A fertility and period tracker: BBT charts, LH test reading and device syncing

Quick facts

Doesn't sell your data
Some data used for ads
Delete your account in the app

From Femometer's own pages, checked Nov 12, 2026. See the sources

What is Femometer?

Femometer helps you follow your cycle and fertility in one calm place 🌸 Log your period, symptoms, basal body temperature, cervical mucus and test results, and it predicts your next period and fertile window, including for irregular cycles. It draws your BBT and LH charts for you, reads LH test strips as low, high or peak, and syncs with Femometer devices from the same maker, which also makes smart rings. There's a pregnancy log for later on too, and a paid subscription is offered through the app stores.

Screenshots

Screenshots from the App Store.

Who Femometer is for

People tracking their periods or trying to conceive, including those who want to follow a pregnancy, as described by Femometer.

Trying to conceive apps Pregnancy apps

What Femometer does

Log your period, flow, symptoms, BBT and cervical mucus
Period and fertile window predictions, including for irregular cycles
BBT and LH charts built automatically
LH test strip reading: low, high or peak
Pair Femometer devices so measurements sync to the app
Reminders and statistics on your cycle patterns
Fertility courses, plus a pregnancy log for prenatal tests and baby progress
Export your records to PDF

Femometer pricing

Prices change and differ by country. Each line shows where and when we read it.

Paid plan

$9.99/month, $19.99/quarter or $49.99/year

Subscription plans listed in the US App Store description.

“Plans: $9.99 Monthly, $19.99 Quarterly, $49.99 Yearly”

Source: apps.apple.com · checked Nov 12, 2026

Femometer privacy: what the company says about your data

Taken from Femometer's own published pages, with the exact passage each line rests on. This is a summary of what the company states, not an audit of what it does.

Selling personal data

Says it does not sell personal data.

“We do not sell your personal information.”

Source: femometer.com · checked Nov 12, 2026

See all: Period trackers that say they don't sell data (8)

Advertising

Says some data is used or shared for advertising.

The same policy says it does not share personal information for cross-context behavioral advertising.

“We may also disclose your Personal Information to providers when we promote our business, including for marketing and advertising purposes, and to conduct audience engagement and analytics related to the Services.”

Source: femometer.com · checked Nov 12, 2026

Deleting your data

You can delete your data or account from inside the app.

Deletion is also available by email request.

“You may delete your account and erase your Personal Information at any time in our App or contact us at help@femometer.com.”

Source: femometer.com · checked Nov 12, 2026

See how every listed app answers these questions in our app privacy data, or put Femometer side by side with another app in the app privacy checker.

Devices

Apple Watch

Has an Apple Watch app.

Listed under Compatibility on the US App Store.

“Apple Watch Requires watchOS 8.5 or later.”

Source: apps.apple.com · checked Nov 12, 2026

See all: Apps with an Apple Watch app (29)

Compiled from public sources

HerFound added this listing from public information. Facts aren't founder-confirmed yet. We don't publish ratings of our own; a star rating shown here is Apple's, linked to the App Store. Spotted something wrong? Tell us and we'll fix it. How HerFound compiles listings.

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Femometer: common questions

The paid plan is listed at $9.99/month, $19.99/quarter or $49.99/year (Subscription plans listed in the US App Store description). Source: apps.apple.com, checked Nov 12, 2026.

Femometer says it does not sell personal data. On advertising, it says some data is used or shared for advertising. Source: femometer.com, checked Nov 12, 2026.

You can delete your data or account from inside the app. Source: femometer.com, checked Nov 12, 2026.

Femometer is available on iOS and Android. It also has an Apple Watch app.