We always aim to keep our tools well-optimized and resource-efficient, and the current implementation of the in-app tracking filter is expected to have minimal impact on the battery life.

It's okay to see a high background time attributed to 1Blocker while reviewing your device's battery usage in iOS Settings > Battery because the filter works via a local VPN profile. If a VPN profile is enabled, it's considered active by iOS.

The battery usage rate may sometimes be higher than usual if the in-app filter actively blocks tracking requests because each request goes through 1Blocker's VPN profile.

In this case, it's worth setting the filtering mode of this tool to the DNS Proxy mode in the (…) menu. 1Blocker may take about one minute to reconfigure the filtering mode.

Note: It is recommended that you choose longer time intervals while checking battery usage, such as the Last 10 Days tab in iOS Settings > Battery.