Dense English is slow
Technical vocabulary plus long sentences in a second language doubles the effort of a hard chapter.
17 languages
Study in English, understand in your language.
Most technical books are written in English. Aethel translates a chapter into your language when you ask for it, narrates the translation and lets you switch back to the original wording at any moment.
Five books and an hour of narration free. No card needed.
The problem
Machine translation breaks formulas
Copying a page into a translator mangles equations, tables and structure.
You still need the original
Exams and papers use the English terms, so you need both versions side by side.
How Aethel helps
Chapter translation
Translate into Spanish, French, German, Italian, Portuguese, Polish, Dutch, Swedish, Turkish, Japanese, Korean, Chinese, Hindi, Arabic, Russian or Greek.
Equations stay intact
Formulas, tables and figures keep their place while the prose around them is translated.
Original one tap away
Switch between the translation and the original text without losing your place.
Saved translations
Finished translations are kept, so a chapter opens instantly the next time.
What you will hear
These are produced live by the same speech engine the app uses. Press Listen to hear them in your device's voice; in the app you choose a studio or ElevenLabs voice.
P(A|B) = P(B|A) P(A) / P(B)
Aethel says
P of A given B equals P of B given A, times P of A, over P of B
Get started in three steps
- 1Create a free account and choose your interface language.
- 2Import an English EPUB or text-based PDF.
- 3Pick your reading language in Settings or from the reader and press play.
Questions
Are equations read in my language too?
The surrounding text is translated and narrated in your language. Formulas stay printed as they are; their spoken form is most complete in English today.
Can I import books written in other languages?
Yes. Books in any of the 17 reading languages can be narrated, and translated into the others.
Compared with
Hear your own book this way.
Free to start: five books and an hour of narration, no card needed.