Clue (BioWink)

Clue, operated by BioWink GmbH in Berlin, Germany, is a science-driven menstrual, ovulation, pregnancy, and reproductive health tracking app with 100M+ downloads across 190+ countries. The product portfolio spans Clue (free tier), Clue Plus (subscription), Clue Conceive, Clue Pregnancy, Clue Perimenopause, and a "Clue (No Period)" mode for non-bleeding hormonal cycles. Clue Connect provides partner sharing. The company contributes anonymized real-world data to academic research partnerships with Stanford, University of Oxford, UC Berkeley, MIT, and the Bill & Melinda Gates Foundation. Clue is a consumer mobile product; no public developer API or partner API portal has been identified. This entry catalogs the company surface for the API Evangelist index.

Clue (BioWink) is profiled on the APIs.io network. Tagged areas include Femtech, Women’s Health, Reproductive Health, Period Tracker, and Cycle Tracking.

Clue (BioWink)’s developer surface includes support and 7 more developer resources.

🌐 Visit website 📡 Source on GitHub

9.0/100 minimal ▬ flat Agent 0/100 human only Full breakdown ↓
scored 2026-07-27 · rubric v0.5

0 APIs

FemtechWomen's HealthReproductive HealthPeriod TrackerCycle TrackingFertilityPregnancyPerimenopauseResearch DataConsumer App

Kin Score

Kin Score How this is scored →
scored 2026-07-27 · rubric v0.5

Composite quality — 9.0/100 · minimal

Contract Quality 0.0 / 25

Developer Ergonomics 0.9 / 20

Commercial Clarity 2.1 / 20

Operational Transparency 0.0 / 13

Governance 0.0 / 12

Discoverability 6.0 / 10

Agent readiness — 0/100 · human only

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 15

MCP Server 0 / 12

Machine-Readable Auth 0 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 0 / 6

Agent Skills 0 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/clue-app: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

Access & Security 2

Authentication, authorization, and security posture

VulnerabilityDisclosure

VulnerabilityDisclosure

DomainSecurity

DomainSecurity

Operate 1

Status, limits, changes, and where to get help

Support

Support

Commercial 1

Pricing, plans, and the legal terms of use

PrivacyPolicy

PrivacyPolicy

Company 3

The organization behind the API

Website

Website

Careers

Careers

LinkedIn

Other 1

Properties that don't map to a standard resource type

Research

Research

Source (apis.yml)

aid: clue-app
url: https://raw.githubusercontent.com/api-evangelist/clue-app/refs/heads/main/apis.yml
name: Clue (BioWink)
type: Index
kind: company
description: Clue, operated by BioWink GmbH in Berlin, Germany, is a science-driven menstrual, ovulation, pregnancy, and reproductive
  health tracking app with 100M+ downloads across 190+ countries. The product portfolio spans Clue (free tier), Clue Plus
  (subscription), Clue Conceive, Clue Pregnancy, Clue Perimenopause, and a "Clue (No Period)" mode for non-bleeding hormonal
  cycles. Clue Connect provides partner sharing. The company contributes anonymized real-world data to academic research partnerships
  with Stanford, University of Oxford, UC Berkeley, MIT, and the Bill & Melinda Gates Foundation. Clue is a consumer mobile
  product; no public developer API or partner API portal has been identified. This entry catalogs the company surface for
  the API Evangelist index.
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source: []
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/clue-app.png
access: 3rd-Party
created: '2026-05-23'
modified: '2026-05-23'
position: Consumer
tags:
- Femtech
- Women's Health
- Reproductive Health
- Period Tracker
- Cycle Tracking
- Fertility
- Pregnancy
- Perimenopause
- Research Data
- Consumer App
specificationVersion: '0.19'
apis: []
common:
- type: VulnerabilityDisclosure
  url: security/clue-app-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/clue-app-domain-security.yml
- type: Website
  url: https://helloclue.com/
- type: PrivacyPolicy
  url: https://helloclue.com/privacy
- type: Careers
  url: https://helloclue.com/careers
- type: Support
  url: https://support.helloclue.com/hc/en-us
- type: Research
  url: https://helloclue.com/articles/about-clue/clues-scientific-research
- type: LinkedIn
  url: https://www.linkedin.com/company/biowink-gmbh
maintainers:
- FN: API Evangelist
  url: https://apievangelist.com

Clue (BioWink)

Kin Score

Security Posture 2

Clue App Domain Security

Clue App Vulnerability Disclosure

Resources