Clue

A period tracker: cycle tracking with predictions for your period, PMS and ovulation.

Quick facts

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

From Clue's own pages, checked Nov 11, 2026. See the sources

What is Clue?

Clue is a period and cycle tracker from the Berlin company BioWink GmbH 🌸 Log your period dates, symptoms and mood, and Clue gives you predictions for your next period, PMS and ovulation, plus basic cycle stats, and you can track your cycle even without menstrual bleeding. The free version covers essential tracking and basic predictions. A Clue Plus subscription adds deeper analysis, modes for trying to conceive, pregnancy and perimenopause, more expert-written articles, wearable data like temperature and sleep, and Clue Connect for sharing your cycle with someone you choose 💗 It's on iOS and Android.

Screenshots

Screenshots from the App Store.

Who Clue is for

Everyone with a cycle, Clue says, across life stages from a first period to perimenopause.

Trying to conceive apps Pregnancy apps Perimenopause apps

What Clue does

Period and cycle tracking with period, PMS and ovulation predictions
Log symptoms, mood and other cycle experiences
Track your cycle even without menstrual bleeding
Clue Conceive mode with fertile window predictions (Clue Plus)
Pregnancy and perimenopause modes (Clue Plus)
Clue Connect to share your cycle with another person (Clue Plus)
Connect a wearable for temperature and sleep data (Clue Plus)

Clue pricing

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

Free version

There is a free version.

Clue Terms section 4.4: some functions are free, more extensive functions are paid (Clue Plus).

“The basic Clue app can be acquired free of charge from the relevant app store”

Source: helloclue.com · checked Nov 11, 2026

See all: Free period trackers (10)

Paid plan

$9.99/month or $39.99/year

Clue Plus, US App Store In-App Purchases.

“Clue Period Tracker - 1 Month $9.99 12 Months $39.99”

Source: apps.apple.com · checked Nov 11, 2026

Clue privacy: what the company says about your data

Taken from Clue'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.

Clue Supplemental US Privacy Notice. The main policy separately says tracked health data is never sold to advertisers.

“Right to Opt-Out of Sale: We do not Sell your Personal Information.”

Source: helloclue.com · checked Nov 11, 2026

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

Advertising

Says some data is used or shared for advertising.

Limited technical/usage data, with consent; health data not shared. US notice says no sharing for targeted advertising.

“Activity tracking means that limited technical data (like your device ID) and usage data (for example installing Clue or subscribing to Clue Plus) is shared with advertisers so you don’t see Clue ads that aren’t relevant to you.”

Source: helloclue.com · checked Nov 11, 2026

Account

You need an account to use it.

Clue Terms section 5.1. Use without an account is described as no longer available to new users.

“Today, Clue exists only as an online service. To use Clue, you need to create an account.”

Source: helloclue.com · checked Nov 11, 2026

Where your data is kept

Your data is stored on the company's servers.

“All of our data is securely stored on servers located in the European Union (EU).”

Source: helloclue.com · checked Nov 11, 2026

Deleting your data

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

Clue Terms section 10.1. The privacy policy also offers complete data deletion on request by email.

“In relation to the free Clue service, you may terminate the contractual relationship with us at any time by deleting your account in accordance with the instructions in the app.”

Source: helloclue.com · checked Nov 11, 2026

Company based in

Germany

BioWink GmbH, Berlin.

“Clue is made by BioWink GmbH, Adalbertstraße 7-8, 10999 Berlin.”

Source: helloclue.com · checked Nov 11, 2026

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

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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Clue: common questions

There is a free version. The paid plan is listed at $9.99/month or $39.99/year (Clue Plus, US App Store In-App Purchases). Source: helloclue.com, checked Nov 11, 2026.

Clue says it does not sell personal data. Clue Supplemental US Privacy Notice. The main policy separately says tracked health data is never sold to advertisers. On advertising, it says some data is used or shared for advertising. Source: helloclue.com, checked Nov 11, 2026.

You need an account to use it. Source: helloclue.com, checked Nov 11, 2026.

Your data is stored on the company's servers. Source: helloclue.com, checked Nov 11, 2026.

You can delete your data or account from inside the app. Source: helloclue.com, checked Nov 11, 2026.

Clue is available on iOS and Android.