Adblock Fast vs AdBlocker Ultimate

Adblock Fast is a free ad blocker for desktop computers and mobile browsers. It uses 12 optimized filtering rules derived from EasyList and Bluhell Firewall; the maker says these rules are intended to speed page loading while using less CPU, memory and storage. On Android it blocks ads in Samsung Internet 4.0 and later, and on iOS it works in Safari. The maker lists support for Windows 7 and later and a Chrome desktop extension; the repository marks Opera support as discontinued. In Chrome, the toolbar button can disable blocking for a site, and the choice is remembered when a user returns. Mobile users can choose the default Fast rules or an experimental Faster mode with more comprehensive, current rules. The maker says Faster mode anonymously crawls common websites using background bandwidth without cookies or other personal information. The blocker intercepts HTTP traffic and injects CSS and JavaScript into visited pages to block requests and hide ad elements. Its code is open source under the GNU General Public License version 3 or later, subject to listed exceptions. The app does not block ads in other Android or iOS apps.

AdBlocker Ultimate blocks ads and trackers in browsers, apps and across devices, with products for Windows, Android and iOS as well as browser extensions. Its Windows app adds system-level ad and tracker blocking, phishing protection and customizable exceptions. Android offers system-wide filtering, per-app controls, malware and phishing protection, custom filter rules and encrypted DNS, including DNS-over-HTTPS, DNS-over-TLS and DNSCrypt. The iOS product blocks ads, malicious domains and trackers in Safari and supports custom filters and a whitelist. Browser extensions are listed for Chrome, Firefox, Opera, Yandex and Edge; they do not use a predefined acceptable-ads list. The maker says filtering is processed locally and browsing history is not tracked. A free plan and 14-day trial are available. Listed yearly plans cost $39.99 a year for either 3 or 10 devices; lifetime licenses cost $99.99 as a one-time purchase for either device count.