Calyx VPN

Free#17 of 43 in Free VPN Services

Calyx VPN: A no-account, open-source Android VPN with useful leak prevention and bridge mode. Ranked #17 of 43 in Free VPN Services by our editors (7.5/10); pricing: Free plan; best for open-source Android VPN users.

7.5/10★★★★☆Editor score

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Calyx VPN7.5 Visit Calyx VPN

At a glance

• Editor score
  7.5 / 10
• Pricing
  Free plan
• Best for
  Open-source Android VPN users
• Free plan
  Yes
• Paid from
  Free
• Founded
  2010
• Facts checked
  22 Sep 2026

• Where it wins

  • Free service with no user accounts required
  • Open-source client and server software
  • DNS-leak prevention and optional bridge mode

• Where it doesn't

  • Android-only availability
  • Speed limit is unspecified
  • IPv6-leak prevention requires a rooted device

Our verdict on Calyx VPN

Calyx VPN is a free VPN service operated by The Calyx Institute for privacy-conscious Android users. It encrypts network traffic and routes it through Calyx-hosted VPN infrastructure, providing an anonymous IP address without requiring an account. The Android application is based on the Bitmask platform and is distributed through F-Droid, making it suited to users who prefer open-source software and an account-free setup.

Privacy and transparency are its clearest strengths. Calyx VPN uses a no-logs policy, and both its client and server software are open source. The service includes DNS-leak prevention, while IPv6-leak prevention is available on rooted devices. Optional bridge mode adds a way to route connections through a censorship-circumvention bridge, which gives the app a narrower but meaningful use case beyond ordinary traffic encryption.

The main trade-off is platform scope: Calyx VPN is available on Android, rather than across a broader range of listed platforms. Its speed limit is unspecified, so the published plan information does not establish a performance ceiling. CalyxVPN is also temporarily excluded from the CalyxOS Android 16 test build while its organization rebuilds capacity and infrastructure to maintain and develop the app. Choose it if you want a free, open-source Android VPN without user accounts; choose an alternative if you need support beyond Android or require a stated speed limit.

Your product? Our editors can test Calyx VPN in depth and publish a review, labelled as paid · from $149/mo →

Calyx VPN pricing

Calyx VPN fact sheet

Alternatives to Calyx VPN

• Proton VPNA strong free VPN with unlimited data, audited no-logs coverage, and open-source apps.9.3
• hide.meA capable free VPN for privacy-focused streaming and torrenting.9.1
• WindscribeA flexible VPN with a capable free tier and unusually configurable paid plans.9.0

See all Calyx VPN alternatives →

Featured on iTechGuides

Calyx VPN is listed in our Free VPN Services directory. Add the badge to your site — it links back to this page.

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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

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Last updated 7 Oct 2026 · How we research and update