aid: cardiogram
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/cardiogram.png
name: Cardiogram
description: Cardiogram is a digital-health company whose consumer app analyzes heart-rate and
  activity data from wearables such as the Apple Watch, Wear OS, Garmin, and Fitbit to help people
  understand their cardiovascular health. Its DeepHeart deep-neural-network technology was developed
  to screen heart-rate patterns for signs of conditions including atrial fibrillation, sleep apnea,
  diabetes, and hypertension, work studied in collaboration with academic health researchers. The
  company is backed by Andreessen Horowitz (a16z). This profile was added to the API Evangelist
  network as a venture-portfolio lead; as of this pass Cardiogram exposes no public developer or API
  surface and its primary website (cardiogram.com) does not complete an HTTPS/TLS handshake.
url: https://raw.githubusercontent.com/api-evangelist/cardiogram/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- a16z
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-18'
tags:
- Company
- Health
- Healthcare
- Digital Health
- Wearables
- Heart Rate
- Cardiovascular
- Machine Learning
- Consumer Health
common:
- type: DomainSecurity
  url: security/cardiogram-domain-security.yml
- type: Website
  url: https://cardiogram.com
apis: []
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence