I really wish that this, and the other extensions it enables, were supported on Firefox for Android. There are a number of browsers that throw away your browsing data on every session (Firefox Focus, Duck Duck Go), and regular Firefox has the option to, but what I really want is to save cookies and other browsing data only on particular sites where I not only have an account, but also use it enough that logging in with autofill is too much of a hassle. Temporary containers allows this on desktop, but there's no mobile support.
If you're not looking to sign into multiples accounts on the same website, look into state partitioning/first party isolation. If you are looking to sign into multiple accounts, I use multiple browsers for this.
