Boo translates whatever you've selected anywhere on Windows: a PDF, a web page, an email, even a file name. It runs offline on your PC, reads text aloud in natural voices, and helps you remember new words.
Windows 10 & 11 · 7 days of Pro included · no account needed
No copy-pasting into a browser tab. Boo sits in your tray and comes up right where you're reading.
In a PDF, a browser, Word, WPS, Outlook, Explorer: anything you can highlight.
A small popup opens next to your cursor with the translation already done.
Click any word for its meaning, hear it spoken, and save it to your flashcards in one click.
Built for reading real things in another language, not for typing phrases into a box.
Translation runs on your own PC. Your text never goes to a server, and it keeps working on a plane.
German, Spanish, French, Japanese, Arabic, Chinese and more, with auto-detect so you don't have to pick.
Lifelike offline voices for 28 languages read any sentence aloud, or slowed down to catch every sound.
Meanings, word type and examples for any German or English word, right under your text.
Saved words come back at growing intervals (spaced repetition), with the sentence you found them in.
Rejoins lines that PDFs break mid-sentence, so you get one clean translation instead of fragments.
Open Boo's window for longer text. Click a word to get its dictionary card, select a phrase to translate just that part, and export your vocabulary to Anki whenever you like.
See what Pro adds →Every download includes 7 days of Pro. After that, Boo stays free for English plus one language of your choice.
Prices in USD; local taxes are added at checkout where required. Your license key arrives by email right away. Paste it into Boo → ✦ Pro.
Yes. Translation, voices and the dictionary all run on your PC. You only need a connection to download a new language (once) and to activate Pro.
Anything you can select text in: browsers, PDF readers (including WPS and Acrobat), Word, Outlook, chat apps, and even file and folder names in Explorer.
Nothing breaks. Boo keeps working for free with English plus one language you choose, and you can upgrade whenever you like.
Yes. Open Boo → ✦ Pro → "Deactivate on this PC", then enter the same key on the new computer.
Use the "Manage subscription" link in your purchase email. Pro stays active until the end of the period you paid for.
No. Boo never uploads what you translate. The only network requests are language and voice downloads and license checks. See the privacy policy.
