# uBlock Origin vs 1Blocker: privacy compared

| Criterion | uBlock Origin | 1Blocker |
| --- | --- | --- |
| Grade | B (88/100) | D (53/100) |
| Jurisdiction | Unknown | Unknown |
| Open source | Yes | No |
| No trackers or telemetry | Yes | Yes |
| No ads or data sales | Yes | Yes |
| Independent audit | No | No |
| Effective by default | Yes | No |
| No browsing data collected | Yes | Yes |
| Custom filters | Yes | Yes |

**uBlock Origin.** uBlock Origin scores 88 out of 100 (grade B) on the ad and tracker blockers criteria. It meets 6 of 7 criteria: open source, no trackers or telemetry, no ads or data sales, effective by default, no browsing data collected and custom filters. It does not meet independent audit.

**1Blocker.** 1Blocker scores 53 out of 100 (grade D) on the ad and tracker blockers criteria. It meets 4 of 7 criteria: no trackers or telemetry, no ads or data sales, no browsing data collected and custom filters. It does not meet open source, independent audit and effective by default.

Source: https://privacyratings.com/compare/ad-blockers/ublock-origin-vs-1blocker/