Read with understanding
Keep Spanish and English together. Look up a word without losing the sentence.
Read it. Listen to it. Learn from it.
Listen instead
of read.
Turn your documents and compatible books into audio.
Bring a book you want to get through. Listen to the original or a translation, then return to the page when you want to read more closely.
Prepared audio demo · No account or upload · Supported DRM-free files
START WITH A LISTEN
A story for your ears.
A page when you want it.
Hear a prepared sample, then explore reading, vocabulary and your library. These examples work here without importing a book.
READING COMFORT · EPUB
A page that feels like yours.
Choose a type size, soften the light, and let the controls recede. Keep both languages together or settle into the original.
- Light, Sepia and Dark reading themes
- Adjustable type, spacing and reading layout
- Focus controls and remembered reading preferences
The reading sample below demonstrates size, theme and a simplified Focus interaction. PDF pages use separate zoom controls.
LANGUAGE SUPPORT · DESKTOP EPUB
Stay close to the author's words.
Keep the original and translation together. Vertically written Japanese stays vertical, while English remains upright beside it.
- Aligned original and translated passages
- Word lookup and optional pronunciation guides
- Original-only Word Lens hints in the desktop app
This sample has prepared English translations. Translation engines, language support and online requirements vary.
VOCABULARY · EPUB
Keep the sentence, not just the word.
A word means more when you remember where you met it. Save it with its sentence, revisit it in a short review, then notice it again in your reading.
- Meet itLook up a word in the story.
- Keep itSave its meaning and context.
- Remember itPractice with a short review.
Try an underlined word in the sample first. The app also offers spaced repetition, saved-word encounters and progress charts; this sample does not run its scheduler.
TRY IT · EPUB LISTENING
Let the story come to you.
Hear the Spanish. Follow the English. Or give each passage a second voice, one language at a time.
The bookshop by the seaChapter 1 · Two passages · Prepared synthetic narration
ES ↔ ENPreparing the listening controls…
English translation for both passages. Changing language mode returns to the beginning.
ESPAÑOL · ORIGINAL
Cada mañana, Clara pasaba por una pequeña librería junto al mar. Siempre tenía prisa, pero aquel día había un libro abierto en la ventana.
ENGLISH · TRANSLATION
Every morning, Clara passed a little bookshop beside the sea. She was always in a hurry, but that day there was an open book in the window.
ESPAÑOL · ORIGINAL
Se detuvo a leer una frase. Luego otra. Por primera vez en mucho tiempo, olvidó mirar el reloj. Alguien había dejado una nota: «Las mejores aventuras empiezan con una página».
ENGLISH · TRANSLATION
She stopped to read a sentence. Then another. For the first time in a long while, she forgot to check the time. Someone had left a note: “The best adventures begin with a page.”
This website sample uses four prepared synthetic recordings, not live narration or a production voice preview. The app's voices and offline options depend on language and engine. This player demonstrates listening; it does not import a book, prepare audio or export a file.
About the sample voices
Prepared with Microsoft Elvira (Spanish) and Ava Multilingual (English) neural voices. The story and English translation were written for this demonstration. No account, microphone access or live translation is used.
TRY IT · YOUR DESKTOP LIBRARY
Bring a book.
See where it takes you.
Some days it’s a story. Other days it’s a document you need to understand. Choose a sample to explore the reading and export options that fit it.
Prepared sample library. No files are uploaded, imported or exported here.
1 · Choose your starting point
2 · Make the story yours
Let the story come to you
Hear Spanish, English, or alternate both. Follow the passage as you listen.
3 · Take something away
Preview a bilingual EPUB
ILLUSTRATIVE EXPORT · SPANISH + ENGLISH
The bookshop by the sea
Cada mañana, Clara pasaba por una pequeña librería junto al mar. Siempre tenía prisa, pero aquel día había un libro abierto en la ventana.
Every morning, Clara passed a little bookshop beside the sea. She was always in a hurry, but that day there was an open book in the window.
Original and translated paragraphs travel together. The desktop app lets you review translation coverage, generate missing translations or explicitly mark gaps, then save a bilingual EPUB. Desktop also accepts eligible reflowed PDFs; no file is generated in this preview.
Preview a vocabulary CSV
Keep the meaning and the sentence that made it memorable.
- Word
- librería
- Meaning
- bookshop
- Context
- Cada mañana, Clara pasaba por una pequeña librería junto al mar.
Illustrative row, not your saved-word list or an exact CSV schema. In the app, vocabulary exports as CSV. Try saving an underlined word in the reading sample below.
2 · Choose how to read the document
Keep the original page
Select a French sentence or follow a footnote. The original layout stays intact.
Give the text room to breathe
Try “Read as book” in the PDF sample to see extracted passages beside their English translation.
Desktop, with usable embedded text. Scans remain original pages; there is no OCR.
3 · Know what you can take away
Your source format matters.
Desktop can export a bilingual EPUB when a PDF has complete usable reflow. iPhone/iPad export requires an EPUB reading source. Neither produces a translated PDF file.
Compare supported formats ↓Don’t have a book ready? Explore your other ways in.
Discover a classic
The app connects to public catalogs. A catalog record may offer online reading, borrowing or a downloadable edition; only supported, available downloads can be imported.
Connect your shelves
Bring a compatible OPDS library, with browsing and search where your server supports them. You can also bring compatible DRM-free EPUB, MOBI and PDF files on desktop.
TRY IT · DESKTOP PDF
Keep the page.
Find your way through it.
A reference, a sentence in French, a quieter way to read. Try this short field journal.
Open the PDF example to load its pages.
Page 1 of 2
Real PDF pages and selectable text · Prepared translations · No uploads
What this example shows
Original PDF tools and a proposed website demonstration of the app's book view. Embedded text is required for selection and reflow; scanned images are not translated. PDF translation and listening require usable text and a supported engine. This demo does not generate translations or PDF audio. This small demo uses a simplified page history.
READ AND LEARN FROM THE SAME CONTENT
Stay motivated.
Read in the languages you want. Import content for side-by-side reading.
Spanish original English support
01 / THE ARRIVAL
An unexpected beginning
Curious about a word? Try an underlined one.
1 / 2
IN THIS SENTENCE
Interactive sample · Prepared translations · No account or download
A SMALL START. A REAL POSSIBILITY.
You’ve found your way through a page.
Imagine doing that with a book you’ve always wanted to read.
Interactive samples with prepared text and synthetic narration, not the full app. No live translation, uploads or analytics. Saved words last until you reload.
ONE BOOK. MORE WAYS TO SPEND TIME WITH IT.
Read it. Listen to it.
Learn from it.
A novel, a manuscript, a document you have been meaning to read. Start with your own material and choose how to spend time with it.
Keep the page close.
Read the original or pair it with a translation. Adjust the page to suit you.
Make room for listening.
Listen as you read, or prepare supported audio for later. On iPhone/iPad, eligible recordings can be saved outside Reader.
Return to useful words.
Save unfamiliar words with their sentences and review them through spaced practice.
01
BRING YOUR BOOKS
Your next read.
More ways to begin.
Start with the files you already own, find a classic in Discover, or connect the library you’ve built on your own server.
YOUR FILESDISCOVERYOUR OPDS LIBRARY
Use DRM-free files you have the right to read. Catalog access and download rights depend on the source.
.epub
Books made for reading.
Parallel translation, reading aids and bilingual EPUB export. Desktop and iPhone/iPad.
.pdf
Your documents belong here, too.
On desktop and iPhone/iPad, choose “Read as book” for PDFs with usable text to read reflowed, translated content. Return to the original page whenever you need it.
.mobi
A home for older ebooks.
Import supported MOBI on desktop; iPhone/iPad converts supported, unprotected MOBI and AZW3 into reading copies.
.docx
Listen to a manuscript.
On iPhone/iPad, convert supported DOCX, TXT, HTML, RTF and FB2 into reading copies. Document layout may change.
What happens with scanned PDFs or PDFs on iPad?
Scans and PDFs without usable extracted text are read as original pages, without parallel translation or OCR. With usable text, desktop and iPhone/iPad support translation and listening. Complex tables, columns and reading order can affect the result.
Discover a classic.
Browse sources including Project Gutenberg, Standard Ebooks, Internet Archive and Open Library. Access and downloadable editions depend on the source.
Connect your own shelves.
Browse OPDS libraries such as Calibre-Web, Kavita and Komga, with shelves and search where your server supports them.
02
LISTEN. EXPORT. KEEP GOING.
From your reading
to something you can keep.
Keep supported chapter audio in Reader on desktop. On iPhone/iPad, save eligible recordings to Files. Take a bilingual EPUB into another reader, too.
Illustrations explain the output; this sample does not generate files. Save an external copy to keep a recording independently of Reader. App-local audio is not a backup. iOS saved audio and EPUB export may require Pro or the gifted-book allowance; check platform availability below.
03
LET READING BECOME LEARNING
Words from your reading.
Practice in context.
Keep the sentence, not just the definition. Review saved words with spaced repetition, and recognize them when they appear again in your books.
Try a word in the reading sample ↑Help with meaning and pronunciation.
Word lookup, Word Lens hints, and phonetic guides including furigana, pinyin, romaji and romaja. Support depends on language and reading mode.
Review in context.
Saved-word reinforcement, spaced review and reading statistics. Desktop also includes production and listening card types.
Keep your learning portable.
Export vocabulary as CSV, including glosses, sentence context and review fields. Export from desktop or iPhone/iPad.
MAKE ROOM FOR READING
The story stays.
The page adapts.
A comfortable type size. A warmer page. Room for both languages. Small choices that let you settle in.
Try the appearance controls in the demo ↑LIGHT
Down the
Rabbit-Hole
SEPIA
Down the
Rabbit-Hole
DARK
Down the
Rabbit-Hole
A CLOSER LOOK
More than
a place to turn pages.
Explore the details that matter to your reading. These describe the app’s features, not extra functions running in this sample.
Read & navigate Layouts, focus, search
- Parallel original and translation, with interleaved paragraphs on narrow screens.
- Adjustable fonts, size, spacing and Light/Sepia/Dark themes.
- Focus controls, contents and reading progress.
- Desktop vertical Japanese text and right-to-left navigation.
- In-book search and highlight/note tools are implemented in the native iOS EPUB reader.
- Desktop detached reader windows and Grid/List library views.
Translate your way Engine choice, cached editions
- Free keyless machine translation with fallback; online engines need a connection.
- Bring your own provider key for options such as DeepL, OpenAI, Google Cloud and Azure. Providers may charge separately.
- Desktop also supports OpenRouter and LibreTranslate configurations.
- Choose engines and retranslate. Desktop retains per-engine translation editions; iOS cache behavior differs.
- Apple translation requires iOS 26 and an installed supported language pair. Missing packs can trigger a disclosed online fallback.
Build your library Import, Discover, OPDS
- EPUB, PDF and supported MOBI import. iPhone/iPad also converts supported documents such as DOCX and TXT.
- Cover/title library browsing, deduplication and saved reading progress.
- A bundled starter shelf and first-run language setup.
- Public catalog browsing, search and import, subject to source access and rights.
- Your own OPDS servers, including authenticated connections and nested shelves.
Listen & take away Audio, EPUB, vocabulary
- Read-aloud with original/translation choices, tracking and resume.
- Supported downloadable neural voices; availability differs across engines and languages.
- Rendered chapters for offline listening, with storage and cleanup controls.
- Eligible Kokoro and Edge M4A file export on iPhone/iPad.
- Bilingual EPUB export from EPUB source books; desktop also accepts eligible reflowed PDFs.
- Vocabulary CSV export on desktop and iPhone/iPad.
Learn as you go Hints, review, statistics
- Word lookup and capture with sentence context.
- Word Lens hints; desktop’s documented scope is monolingual reading.
- Pronunciation guides for supported Chinese, Japanese and Korean text.
- Spaced repetition and saved-word decoration in books.
- Reading-time, streak and review-history statistics.
- Additional production and listening review cards on desktop.
Local first, sync by choiceAccounts and data boundaries
- Start with local reading; account-backed cloud sync is optional and requires sign-in and enablement.
- Optional sync covers supported books/library data, vocabulary, reviews, statistics and translations. Not every setting or annotation syncs.
- Rendered audio files remain device-local; they do not follow you through cloud sync.
- Online translation and voice services receive the text needed for their work. Local-first does not mean every feature is offline.
Features vary by platform, format and voice engine. Android is planned. Check the download section for available builds.
BEFORE YOU BEGIN
A few good
questions.
What is NextPhase Reader?
A personal-content reader for books and documents you already have. Read, listen, and use the same material for bilingual reading and vocabulary practice. Saved audio and portable outputs depend on platform, source format and voice.
Can I keep the audio outside Reader?
On iPhone/iPad, supported Kokoro and Edge recordings can be shared or saved to Files as separate M4A recordings. Keep that external copy: app-local recordings can be lost when app data is removed. Desktop currently keeps prepared chapter audio in its local audio library; a general external audio-export workflow is not offered here.
Which files should I start with?
Start with a DRM-free EPUB or a PDF with selectable text. Desktop also accepts supported MOBI. iPhone/iPad adds document conversion, including DOCX manuscripts. Scans need OCR that Reader does not provide; DRM-protected Kindle purchases are not supported.
Can I listen offline?
Prepared recordings can play offline once they are on your device. Supported downloaded voices can also generate speech locally after setup. Edge needs a connection for new audio, and local iOS preparation requires the app to stay open. Live read-aloud, preparing a recording and playing a saved file have different requirements.
Do I need to download anything to try the demo?
No. The sample works here in your browser, without an account or your own book. You can move between experiences and keep browsing this page.
Is this the full app running in the browser?
No. This is a small, prepared interactive sample. Its interface is illustrative. Live translation, importing books and synchronization are not connected.
Which book will I be trying?
Two original short stories: a Spanish bookshop visit and a Japanese letter in the rain, each with prepared English support. The PDF sample is an original two-page French/English field journal. Listening uses prepared synthetic recordings of the Spanish story and its English translation.
Will my sample words be saved?
Only until you reset the reading sample or reload the page. Switching experiences keeps your sample words. This sample has no account connection, analytics collection or live translation requests.
DESKTOP AND iPHONE/iPAD
Bring a book.
Find a new way in.
Explore Reader on desktop and iPhone/iPad. Desktop installers are linked below; an iPhone/iPad App Store link is not available here yet. Features and audio export differ by platform and installed version.
Available
Windows
Direct installers for Windows 10 and 11. Choose the build for your processor.
These are not signed yet, so Windows may warn that the publisher is unrecognised. Each file has a published checksum you can verify first.
Not yet available here
iPhone & iPad
Native iPhone and iPad apps. An App Store download link is not available here yet. Features and supported translation or voice engines differ from desktop.
Planned
Android
Planned; not a current end-user reader.
For Windows, find your processor under Settings → System → About → System type. Keep files you have the right to read. Need help?
Read it. Listen to it. Learn from it. ↑