{
  "slug": "tuta-calendar",
  "category": "calendars",
  "name": "Tuta Calendar",
  "description": "End-to-end encrypted calendar from Tuta, available as a standalone Android and iOS app and in Tuta's web and desktop clients. Events, invitations and shared calendars are encrypted.",
  "website": "https://tuta.com/calendar",
  "source": "https://github.com/tutao/tutanota",
  "license": "GPL-3.0",
  "platforms": [
    "android",
    "ios",
    "web",
    "windows",
    "macos",
    "linux"
  ],
  "jurisdiction": {
    "code": "DE",
    "name": "Germany",
    "eyes": "Fourteen Eyes",
    "eu": true,
    "gdpr": true,
    "cloud_act": null
  },
  "pick": false,
  "pick_reason": null,
  "disclosure": null,
  "grade": "C",
  "score": 65,
  "coverage": 100,
  "summary": "Tuta Calendar scores 65 out of 100 (grade C) on the calendars criteria. It meets 2 of 4 criteria: no trackers or telemetry and no ads or data sales. It partly meets open source. It does not meet independent audit. It is based in Germany: Fourteen Eyes member; EU member (GDPR).",
  "url": "https://privacyratings.com/calendars/tuta-calendar/",
  "markdown": "https://privacyratings.com/calendars/tuta-calendar/index.md",
  "answers": {
    "open_source": {
      "title": "Open source",
      "weight": 3,
      "answer": "partial",
      "evidence": "https://github.com/tutao/tutanota/blob/master/LICENSE.txt",
      "note": "Apps are open source under GPL-3.0. The server is not."
    },
    "no_trackers": {
      "title": "No trackers or telemetry",
      "weight": 3,
      "answer": "yes",
      "evidence": "https://tuta.com/privacy-policy",
      "note": "No third-party analysis tools. Anonymized usage statistics are collected only with prior consent, and Exodus finds no trackers in the Android app."
    },
    "no_ads": {
      "title": "No ads or data sales",
      "weight": 2,
      "answer": "yes",
      "evidence": "https://tuta.com/pricing",
      "note": "Funded by paid plans. No ads on any plan, including the free plan."
    },
    "independent_audit": {
      "title": "Independent audit",
      "weight": 2,
      "answer": "no",
      "evidence": null,
      "note": "No independent audit is published."
    },
    "transparency_report": {
      "title": "Transparency report",
      "weight": 2,
      "answer": "n/a",
      "evidence": null,
      "note": "Only applies to hosted services with a website to test."
    },
    "user_notice": {
      "title": "Tells users about requests",
      "weight": 1,
      "answer": "n/a",
      "evidence": null,
      "note": "Only applies to hosted services with a website to test."
    },
    "tls": {
      "title": "TLS configuration",
      "weight": 2,
      "answer": "n/a",
      "evidence": null,
      "note": "Only applies to hosted services with a website to test."
    },
    "security_headers": {
      "title": "Security headers",
      "weight": 1,
      "answer": "n/a",
      "evidence": null,
      "note": "Only applies to hosted services with a website to test."
    },
    "web_standards": {
      "title": "Modern web standards",
      "weight": 1,
      "answer": "n/a",
      "evidence": null,
      "note": "Only applies to hosted services with a website to test."
    }
  },
  "tests": {
    "ssllabs": null,
    "observatory": null,
    "internetnl_web": null,
    "internetnl_mail": null,
    "trackers": [],
    "tested_at": "2026-10-01T06:38:40.455Z"
  },
  "last_modified": "2026-10-01T06:56:31Z"
}