Avast One vs Helium Browser
| Avast One | Helium Browser | |
|---|---|---|
| Free plan | No | Yes |
| Free trial | No | No |
| Paid from | — | Free |
| Open source | No | Yes |
| Platforms | Android, iOS, macOS, Windows | Windows, macOS, Linux |
| Free plan | Yes | Yes |
| Paid from | $5.99/mo | — |
| Supported platforms | both | both |
| Browser engine | chromium | chromium |
| Built-in ad blocking | Yes | Yes |
| Extension support | chrome_store | chrome_store |
| Cross-device sync | Yes | No |
| Open source | — | Yes |
Both are listed in Best Web Browsers. On Freedom251, Helium Browser scores higher on our published basis.