Righter treats interface copy the way a style guide treats code: something to check against a standard, not something to eyeball and hope. Feed it a button label, an error message, an empty state, or a full transactional email, and it runs the text against a fixed set of writing rules: active voice, plain language, a target reading level, and a checklist of hedge words and filler phrases to strip out.
Most AI writing tools improvise. They generate copy that sounds fine in isolation and drifts from the brand voice the moment nobody's watching. Righter works the other way: when a team has already defined how a piece of copy should sound, it applies that rule first and only falls back to general principles when nothing more specific exists — and it always names which source it used, so a rewrite never passes off a guess as an established rule.
Every piece of copy comes back with a reading-level score calculated the same way every time, not eyeballed, plus a list of every weakener it removed and why. Teams run it inline while writing, then again as a review pass before anything ships. The bar doesn't move whether the copy lands in a tooltip, a push notification, or an email footer nobody reads twice.