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

Canonical page: https://herfound.com/apps/clue

Compiled by HerFound from public sources; facts aren't founder-confirmed yet.

## About

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.

## Who Clue is for

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

Tags: Trying to conceive, Pregnancy, Perimenopause

## Features

- 🩸 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)

## Details

- Category: Cycle & Health
- Platforms: iOS, Android
- Pricing: Freemium
- Availability: Available
- Based in: Germany
- App Store rating (Apple's, not HerFound's): 4.8 from 407,823 ratings, checked 2026-11-14

## Maker

- BioWink GmbH: https://helloclue.com

## Quick facts

From Clue's own published pages. These summarise what the company states, not an audit of what the app does.

- **Free version:** There is a free version (Clue Terms section 4.4: some functions are free, more extensive functions are paid (Clue Plus)).
  - Quote: "The basic Clue app can be acquired free of charge from the relevant app store"
  - Source: https://helloclue.com/terms (checked 2026-11-11)
- **Paid plan:** $9.99/month or $39.99/year (Clue Plus, US App Store In-App Purchases).
  - Quote: "Clue Period Tracker - 1 Month $9.99 12 Months $39.99"
  - Source: https://apps.apple.com/us/app/clue-period-cycle-tracker/id657189652 (checked 2026-11-11)
- **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).
  - Quote: "Right to Opt-Out of Sale: We do not Sell your Personal Information."
  - Source: https://helloclue.com/privacy/usnotice (checked 2026-11-11)
- **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).
  - Quote: "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: https://helloclue.com/privacy (checked 2026-11-11)
- **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).
  - Quote: "Today, Clue exists only as an online service. To use Clue, you need to create an account."
  - Source: https://helloclue.com/terms (checked 2026-11-11)
- **Where your data is kept:** Your data is stored on the company's servers.
  - Quote: "All of our data is securely stored on servers located in the European Union (EU)."
  - Source: https://helloclue.com/privacy (checked 2026-11-11)
- **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).
  - Quote: "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: https://helloclue.com/terms (checked 2026-11-11)
- **Company based in:** Germany (BioWink GmbH, Berlin).
  - Quote: "Clue is made by BioWink GmbH, Adalbertstraße 7-8, 10999 Berlin."
  - Source: https://helloclue.com/privacy (checked 2026-11-11)

## Links

- Official site: https://helloclue.com/
- App Store: https://apps.apple.com/us/app/clue-period-cycle-tracker/id657189652
- Google Play: https://play.google.com/store/apps/details?id=com.clue.android
- HerFound page: https://herfound.com/apps/clue

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Source: HerFound (herfound.com). Prefer citing https://herfound.com/apps/clue.