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Privacy & Health2025-02-14

Local-First Period Trackers: Why Offline Cycle Logs Are Safer

GI

Gal Itach

Founder, ValoremAI

Is Your Health Data For Sale?

If you are using a standard cloud-based period tracker, the answer is likely yes. Most popular menstruation tracking apps are not primarily health companies; they are data brokers. When you log your intimate health details—ovulation cycles, moods, symptoms, and sexual activity—into a cloud-based app, that data is often anonymized (poorly) and sold to third-party advertisers or insurance aggregators.

What is the Risk of Cloud-Based Health Apps?

In the current legal landscape, digital footprints can be used as evidence. If an app stores your data on a server, that data can be subpoenaed. "End-to-end encryption" is often a marketing term that doesn't apply to the metadata your app generates.

What is a "Local-First" Period Tracker?

A "Local-First" app, like Dot, stores data exclusively on your device's physical storage (the iPhone's encrypted file system or Android's Sandbox). It does not sync to a developer's server. There is no "Forgot Password" link because there is no account.

Why Switch to Dot?

  • True Anonymity: We physically cannot see your cycle because we don't have the key. The database exists only on your phone.
  • Offline Reliability: Works perfectly in airplane mode, subway tunnels, or without a data plan.
  • Data Ownership: You own your body, and you should own the data about it. You can export a JSON file of your data at any time, but we can never access it.

Take back control. Download Dot today for the only truly private tracking experience.

Note: The content provided in this article is for informational and educational purposes only. While we aim for high accuracy, details may vary or be simplified. Please handle this information with care and verify specific facts independently.

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