PrivacyTools.io
Reviewed by Marcus Holmberg
Euki logo

Euki

eukiapp.com
1 rating so far*
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Reliable, evidence-based sexual and reproductive health information. Euki takes privacy seriously. They do not store any of the information you enter into the app in the cloud or anywhere. Reviewed by consumerreports.org.

Threat level
Covered

A covered pick. Anyone can use it as a private drop-in, with no setup or know-how. Enough for most people. Threat levels

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Our take

Tiny as open-source projects go, but that undersells it, because Euki is less a hobby project than a purpose-built tool for sexual and reproductive health where on-device storage genuinely protects users. Nothing you enter goes to the cloud, and it even has a decoy PIN for situations where someone might force the app open. Choose it when the threat you care about is another person physically checking your phone, not a server breach. Just know the content library matters as much as the privacy here.

GitHub at a glance
Euki-Inc/Euki-Android
Stars
13
+ 0 this week
Last commit
2mo ago
healthy
License
GPL-3.0
Stars, last 34d
Website at a glance
eukiapp.com
F score 20
Weak website security headers
Graded by Mozilla HTTP Observatory, tested 3d ago

Measures the security configuration of the tool's own website, not the privacy of the product itself. A strong tool can still score low here.

Euki alternatives

Euki license, in plain English
GPL-3.0
Strong copyleft

Free to use and modify, but anything you distribute that is built on it must also be open under the same license.

Permits

  • Commercial use
  • Modification
  • Distribution
  • Patent use
  • Private use

Requires

  • Disclose source
  • Same license
  • State changes
  • License and copyright notice

Does not provide

  • Liability cover
  • Warranty

Why it matters: Strong copyleft keeps every distributed version open. A vendor cannot fold this into a closed product and ship it without releasing their changes.

Plain-language summary of the project's license, not legal advice. Read the full text for the exact terms.

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