When comparing Photon vs Firefox Focus, the Slant community recommends Firefox Focus for most people. In the question“What are the best Android web browsers?” Firefox Focus is ranked 13th while Photon is ranked 26th. The most important reason people chose Firefox Focus is:
It automatically blocks any ad trackers and erases your browsing history which includes your passwords and cookies.
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Pros
Pro True desktop browser experience
In flash mode you get remote access to desktop Firefox on a Linux server. Unbeatable desktop web compatibility on Android.
Pro Keeps your activities private
It automatically blocks any ad trackers and erases your browsing history which includes your passwords and cookies.
Pro Good loading speed
Since it blocks ads, trackers and other things that can slow down web pages, you'll be able to browse the web faster.
Pro Simple to use
Pro Suitable as a secondary browser for everyday use
As it is very fast and private it can be used for everyday use together with a browser with your passwords and login information.
Cons
Con Videos are compressed twice
In Flash mode, you get an interactive streaming video of a desktop browser running on their server, but this means that when you watch videos (a major use case for Flash mode), which are already compressed, it has to be lossy compressed again to get to you, with noticeable loss of quality. So it's better to watch videos with Flash mode off if you can. There's also a bit of lag when scrolling and such.
Con Flash mode has ads
You can also get an annual subscription to turn these off, but it's $10/year. That's kind of pricey when you can get Puffin Browser Pro with unlimited service for a single payment of $4.
Con Notification spam
Tells you to clean the browser every single time you open it.