Head-to-head · Privacy-Focused Operating Systems
CalyxOS vs PureOS
CalyxOS leads on 0 checks, PureOS on 0, and 1 is even. Who comes out ahead on the 1 yes/no, price and count check where we have data for both products. The editor score weighs everything else too.
Our verdict
- Highest scoreCalyxOS · 8.9/10
- Free planboth
CalyxOS scores higher on our rubric for privacy-focused operating systems: 8.9 against 7.9 out of 10; our editors rank them #5 and #7.
CalyxOS is the better fit for android users wanting practical privacy controls. PureOS is the better fit for users wanting a free, general-purpose Linux system.
- CalyxOS fits best
Android users wanting practical privacy controls
- PureOS fits best
Users wanting a free, general-purpose Linux system
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Side by side
| Feature | CalyxOS 8.9/10 Visit ↗ | PureOS 7.9/10 Visit ↗ |
|---|---|---|
| At a glance | ||
| Editor score | 8.9 | 7.9 |
| Ranking | #5 in Privacy-Focused Operating Systems | #7 in Privacy-Focused Operating Systems |
| Best for | Android users wanting practical privacy controls | Users wanting a free, general-purpose Linux system |
| Pricing model | Free | Free |
| Starting price | Free plan | Free plan |
| Free plan | ✓ | ✓ |
| Free trial | — | — |
| Deployment | Mobile | Self-hosted |
| Platforms | Android | Linux |
| Built for | Solo, Small business | Solo, Small business, Mid-market, Enterprise |
| Specs | ||
| Platform | Mobile | Not checked yet |
| Isolation approach | Standard | Not checked yet |
| Device support | Selected devices | Not checked yet |
| Default telemetry | None stated | Not checked yet |
| Installation method | Multiple | Not checked yet |
| Our review | ||
| Pros |
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| Cons |
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| Our verdict | CalyxOS is a free, open-source Android operating system from the Calyx Institute for people who want more control over privacy and security on a phone. It is aimed at everyday Android users, including solo users and small organizations,… Read the review → |
PureOS is a free Linux operating system for personal computers and mobile devices, developed by paid and volunteer members of the Purism community. It suits people looking for a general-purpose system built from free software, with… Read the review → |
Strengths and trade-offs
CalyxOS — where it wins
- Verified boot and bootloader relocking support device integrity.
- Per-app network controls and privacy-oriented DNS, VPN, and Tor options.
- SeedVault encrypted backups and Work Profile app separation.
Where it doesn't
- Installs only on selected Pixel, Fairphone, Motorola, and SHIFTphone devices.
- microG can send data to Google when enabled.
- Requires installing a different operating system on compatible hardware.
PureOS — where it wins
- Installable images include a KDE Plasma flavor and live testing.
- Graphical tools manage applications, updates, and major-release upgrades.
- Free software system with publicly available source code.
Where it doesn't
- Downloadable images require a 64-bit processor.
- Verified features focus more on general system use than privacy protections.
- No verified server edition or supported release lifetime.
- CalyxOS8.9/10 · Free plan
A free Android OS with practical privacy controls for users of selected devices.
Visit CalyxOSFull verdict → - PureOS7.9/10 · Free plan
A general-purpose Linux desktop with installable images and free-software source code.
Visit PureOSFull verdict →
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Last updated · How we research and update