εpsγloWrite with feedback
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Write in the language you are learning. Keep the parts that work, see each correction, and check whether your tone landed.
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Every translation, explained.
Translate between 97 languages. The natural sentence streams in first; the colored breakdown and an explanation for each word follow.
English → Japanese
Translation
EN → JAI'm going to the library tomorrow.
Click any word
はTopic marker
Marks 明日 as the topic: "as for tomorrow…". It replaces が or を rather than adding to them.
は — topic particle, pronounced "wa".
Try 14 language pairs here in either direction. The detailed tools below follow the pair you choose.
Word by word
Colored by grammatical role, explained one word at a time
Every word and every particle becomes its own segment, colored by the job it does in the sentence. The palette is derived from Okabe–Ito, so it stays legible for colorblind readers, and the hues are identical in light and dark mode.
- Click a segment, syntax card, tree node, dictionary entry, or mined phrase. The same dialog explains each one.
- Opening it cross-highlights the same word everywhere else on screen.
- One translation covers four phases: the streaming sentence, segments, per-word detail, and multi-word phrases.
Breakdown
I'm going to the library tomorrow.
Japanese marks every role with a particle after the noun, and the verb closes the sentence.
Click any word. The same dialog opens everywhere
はTopic marker
- Why this word
- Marks 明日 as the topic: "as for tomorrow…". It replaces が or を rather than adding to them.
- Dictionary
- は — topic particle, pronounced "wa".
- Alternatives
- が (new information) · も ("tomorrow too")
Register
A politeness meter, from blunt to honorific
Politeness has four discrete levels, from blunt to honorific. εpsγlo detects your input's level on the first translation. Move the dial and it writes the sentence again at the level you choose.
The meter uses terms that fit the language being produced. Each language climbs its own ladder — a familiar form, a formal one, and whatever that language uses to add distance beyond it — and the rung names change with the target.
Politeness
Can you give me a hand?
日本語
手伝ってくれませんか。
English
Could you give me a hand?
ます-form negative question: the safe default with anyone you are not close to.
Emphasis
Choose what the sentence stresses, down to one word
Pick the flavour of emphasis. Japanese よ and ね, Mandarin 吧, Hindi and Urdu ना and نا, and Korean's -죠 ending express it with a particle. Languages without one use word choice and word order instead. Either way the breakdown shows which word carries it.
Click a single word and the next translation stresses it. Pick library in "the library, tomorrow" and you get a different sentence than when you pick tomorrow, because they are different sentences. Per-word emphasis works in every language the translator speaks.
Emphasis
Telling you something you did not know.
よ
Stressing 図書館 — the library — nowhere else
Where a language has no particle to attach it to, the same flavour is carried by word choice and word order instead.
Click a word, translate again, and the sentence rebuilds around it
Structure
Syntax cards and a dependency tree you can walk
Each word's card shows exactly four things: its part-of-speech tag, the token, its IPA, and a gloss in the language you are pairing with. Change the source language and the gloss changes with it.
- The dependency tree shows what attaches to what, as nested lists, so it wraps on a phone and stays keyboard-navigable.
- Click a card or a node and the same explanation dialog opens.
- Star anything from the dialog and it lands in your vocabulary bank with the sentence it came from.
Syntax
NOUN
明日
/aɕita/
tomorrow
PART
は
/wa/
as for… — the topic marker
NOUN
図書館
/toɕokaɴ/
library
PART
に
/ni/
に — direction / goal particle.
VERB
行く
/iku/
to go
Dependency tree
- 行くroot
- 明日obl:tmod
- はcase
- 図書館obl
- にcase
- 明日obl:tmod
Retention
A vocabulary bank with SM-2 review, offline by default
Star a word or a phrase anywhere in the app and it joins your bank, together with the sentence you met it in. Reviews run on SM-2 spaced repetition, with streaks, due counts and scheduling that respects the timezone you actually live in.
The whole bank lives in your browser's IndexedDB, so reviewing works on a plane. Sign in and it syncs; stay signed out and it still works.
Vocabulary
12due today
7-day streakOffline
図書館
としょかん · noun · library
明日は図書館に行く。
SM-2 schedules it again in 4 days
学ぶ · to learn
手伝う · to help
コーヒー · coffee
Reading & speech
Hear it, and switch on the reading aids you need
Two voices. The neural one runs server-side on Google's model. The free on-device voice speaks one segment at a time, so it can highlight each word as it says it and vary the prosody with your emphasis setting.
Reading aids appear when the language data supports them: IPA when a spelling hides a sound, a transliteration when the script supplies no vowels, and the three Japanese-only toggles for Japanese output.
- Readings set as real ruby text above the word, not a parenthesis after it.
- Toggle transliteration on for pinyin, romaja, or a Latin reading of an unvowelled script, then off when you no longer need it.
- Convert katakana readings to hiragana for Japanese. The conversion affects only the display and leaves your source text unchanged.
Reading & speech
明日図書館でコーヒーを飲む
Furigana, romaji and カナ → かな are display only: they never touch the text you typed, and they are offered only when the target is Japanese.
The complete product
Use the language, not just the translator.
Translation connects to writing, documents, lessons, conversation, grammar and a memory system that follows you through every tool.
Read documents
Scan
Translate PDFs and images paragraph by paragraph, then look up a word or ask why a whole passage was translated that way.
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Follow a course
Learn
Start with placement evidence and a reading foundation, then build six practical skills through a structured course path.
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Practise conversation
Tutor
Chat naturally, get corrections inside the conversation, and see grammar claims verified before they become advice.
Open this toolExplore a rule
Explain
Ask any grammar question in your own words, then branch into prerequisites, contrasts, usage and deeper explanations.
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Remember what matters
Bank + Review
Save words and phrases from across the app, keep the sentence where you found them, and review when they are due—even offline.
Open this toolSaveBankReview
Questions
Straight answers
Which languages do I get?
All ninety-seven, on every plan including Free. English, Italian, Japanese and Spanish have hand-written language profiles behind them. The picker marks every other one as Beta, so you know which you are using before you rely on it.
How is this different from Google Translate or DeepL?
Both are built to hand you a finished translation quickly. εpsγlo is built to show why the translation says what it says: every word colored by its grammatical role and explained, with a dictionary entry and alternatives, plus syntax cards and a dependency tree. If you need a long document translated fast, they are the better tool.
Is it free?
Yes, within a monthly limit. A free account includes 20 translations a month, with the full word-by-word breakdown, in every language. The vocabulary bank and spaced review work without an account.
What do the politeness and emphasis controls do?
Politeness moves the translation between registers, from blunt to honorific, in the forms the target language actually uses, such as Japanese keigo or Spanish tú and usted. Emphasis chooses what the sentence stresses, down to a single word. Both rewrite the translation itself, not only how it is displayed.
Does it work offline?
Partly. The vocabulary bank, spaced review and reading aids work offline and signed out. Translating needs a connection, because every translation is made and counted on our server.
Why does translating need an account when the rest does not?
Because it is the one thing that costs us money per use, so it has to be counted against someone. The vocabulary bank and spaced review run entirely on your device and work signed out, offline, and for free.
Translate 20 sentences a month, free.
Translation needs a free account, because usage is metered per account. The vocabulary bank and review work without one.