A distinctive play on "swiften", this name could fit any product, service or company focussed on speed.
Swifn has only five letters and just one syllable. Single-syllable names are highly rare and very desirable. Successful brands using one syllable names include Chase, Path and Nike.
Swifn.com is a dot-com domain. Dot com domains are the most sought after domain extension in the world, famously used by websites like youtube.com. When most people think of a website, they think of a dot-com.