Paste an English sentence and see each word in Hindi. Everything happens on this device โ nothing is sent anywhere.
A real translator needs a large model or a paid service, and both mean sending every sentence you type to somebody else's computer. This site does not do that โ the Guru answers offline, the chapters work offline, and so does this.
What word-by-word is genuinely good for: reading an English question you nearly understand and finding the two or three words blocking you. What it is no good for: writing Hindi. The grammar will be wrong, and a teacher will know.
Looking up a single word instead? The dictionary gives the meaning in English as well.