Mozilla Firefox vs UC Browser
Mozilla Firefox
firefox.com
UC Browser
ucweb.comSide by side
| Figure | Mozilla Firefox | UC Browser |
|---|---|---|
| Price from | Free | Free |
| Free plan | Yes | Yes |
| Free trial | — | — |
| Open source | Yes | — |
| Web | Yes | — |
| Windows | Yes | — |
| macOS | Yes | Yes |
| Linux | Yes | — |
| iOS | Yes | Yes |
| Android | Yes | Yes |
| Plans published | 1 | 1 |
| Spec score · Web browsers | 9.0 (#11) | 8.7 (#24) |
| Built-in ad blocking | Yes | Yes |
| Founded | 2004 | 2004 |
| Free plan | Yes | Yes |
| Supported platforms | both | both |
| Privacy | Firefox's privacy notice says browsing history, form data, temporary files and cookies are processed on the device unless the notice says otherwise. | The maker says UC Browser offers VPN encryption for private browsing and access without geo-restrictions. |
| Product | Firefox is a web browser that Mozilla describes as fast, private and useful across devices. | UC Browser is a mobile web browser focused on speed, privacy, and browsing features. |
| Support | Mozilla provides Firefox help resources for desktop, enterprise, Android and iOS. | The App Store listing says users can contact support through the app’s Menu > Feedback or at [email protected]. |
| Tracking protection | standard | advanced |
Plans
In their own words
Mozilla Firefox
Mozilla Firefox is a free, open-source web browser that uses the Gecko engine. It is available on Windows, macOS, Linux, iOS, Android, and as a browser extension, and its download page lists availability in more than 90 languages. Standard tracking protection and built-in ad blocking are included. Total Cookie Protection isolates cookies so they cannot follow users between websites, while Tab Groups organize open tabs by project, mood, or task. A Mozilla account can sync bookmarks, passwords, and open tabs across devices. Firefox also offers access to multiple AI chatbots in one place, letting users choose whether to use them. Thousands of free extensions are available through addons.mozilla.org. Mozilla’s privacy notice says browsing history, form data, temporary files, and cookies are processed on the device unless stated otherwise. Automated translation and PDF alt-text suggestions use downloaded language models locally; Firefox says those features do not send page content, PDFs, images, or tab URLs to Mozilla. Firefox is listed at free.
UC Browser
UC Browser is a freemium web browser available on Android, iOS and macOS. The maker, founded in 2004 and headquartered in Singapore, lists built-in ad blocking and advanced tracking protection. Its video player supports accelerated loading, high-resolution playback, speed control up to 2×, floating-window viewing and offline downloads. The browser can detect online videos and offer one-click media downloads from websites and social platforms. Webpage translation uses multiple AI models, and multiple search engines are supported. The browser includes 20GB of free cloud storage for backup, syncing, access and sharing. UC Drive adds cloud video streaming, one-click saving of web images and videos, and cross-device file access. The maker describes social-post downloads as free, unlimited and original quality. Incognito mode does not store searches or visits; the privacy policy says device, network, usage, browsing-history and URL-bar data may be collected.