Trancy Air answers to one hotkey in any app: type a sentence in your own language, hit it, and the translation replaces your text right in the box — no copy, no paste, no browser tab. The same key reads whatever’s under the cursor, OCRs a screenshot on demand, and transcribes speech into a translation as you talk. Native on Mac and Windows; core translation is free, with grammar checks, pronunciation scoring, and AI definitions from $3.49/month.