I will try to help in two parts: 1) The Firefox Nightly “enjoy at your own risk” is not in reference to a lack of safety, security, or privacy. It is merely pointing out that the Nightly version has not been thoroughly tested, so there may be bugs to report, incompatibility with certain sites or upgrades, or there may be some features added as experiments that may or may not make it to future stable releases. Thus, the need for add-ons in Firefox Focus doesn’t address what you believe to be the issue in Firefox Nightly. The warning isn’t a security warning that would need an add-on to solve. 2) I do hear that you would like add-ons, and add-ons are great. Implementing them in Firefox Focus kind of defeats the purpose of Firefox Focus. Add-ons are already available on Android for several Mozilla products: Firefox, Firefox Beta, Firefox Nightly, and the Android Components Reference Browser. If you would like add-ons, these are already readily available. One can look at Firefox Focus as a kind of one-stop-shop privacy browser for focusing on very specific tasks while you have a built-in ad blocker, built-in tracking protection, and minimal features so that you can stay focused. They intentionally left out tabs, bookmarks, log-ins, and add-ons to keep the browser simple, so you can go in, browse privately, clear all the data and go about your day. If you want to sign-in to your Firefox Account, shuffle bookmarks, tinker with settings in add-ons, well, that is what the other Mozilla products are for. Basically, Firefox Focus is supposed to only rely on Mozilla’s built-in features, and keep all of the distractions out, which allows one to focus. Try the others if you seek add-ons. They are great, too; they just have a much different focus and purpose than Firefox Focus.