AdGuard DNS vs Quad9
| AdGuard DNS | Quad9 | |
|---|---|---|
| Free plan | Yes | Yes |
| Free trial | Yes | No |
| Paid from | Free | Free |
| Open source | No | No |
| Platforms | Android, api, iOS, Linux, macOS, self-hosted, Web, Windows | Android, iOS, Linux, macOS, Windows |
| Free plan | Yes | Yes |
| Device limit | 20 devices | — |
| Category filtering | — | No |
| Custom domain policies | — | No |
| Roaming protection | — | Yes |
| Activity reports | — | Yes |
Both are listed in Best DNS Filtering Software. On Everything Xiaomi, AdGuard DNS scores higher on our published basis.