
Night Garden
Elian Rowe
Edit metadata, replace covers, clean broken formatting, and export a corrected EPUB without opening a laptop. Then read it comfortably or listen with downloadable on-device voices—all from one private, local-first app.

Kokoro Voice • 1.0x Speed • 14 min left
Kokoro Voice • 1.0x • 14m left
Cloud-reliant apps stop working the second you lose cellular service. EpubTidy was engineered from day one for true off-grid freedom.
Tucked into your sleeping bag under the stars with zero bars of signal. Enjoy soothing, deeply expressive storytelling for hours without worrying about cellular dead zones or expensive satellite data.
Hands occupied with your rod, tackle, or kayak paddles? Put in your AirPods and let EpubTidy read your favorite books. Pause and resume with a single tap on your earbud or via Siri.
At 35,000 feet in airplane mode or cruising through remote highways. No annoying “buffering” circles or cloud sync failures. Your full library plays continuously with zero latency.
Speechify charges steep recurring fees and streams audio through remote cloud servers. Here is how EpubTidy gives book readers superior freedom:
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| Feature / Capability | EpubTidy (On-Device AI) | Speechify & Cloud Readers |
|---|---|---|
| Offline Operation in the Wilderness | ✓ 100% Offline (Zero Signal) | ✗ Requires Active Internet |
| Subscription Cost | ✓ Free / No Recurring Fees | ✗ $139+/year subscription |
| Privacy & Data Security | ✓ 100% Private (On Device) | ✗ Book text uploaded to cloud |
| EPUB Code, Dublin Core & Cover Repair | ✓ Built-In Deep EPUB Editor | ✗ No EPUB editing tools |
| W3C Readium 2 Typography Engine | ✓ Full Visual Reader & TOC | Basic document viewer |
| Battery & Cellular Data Usage | ✓ Apple Neural Engine Optimized | ✗ Heavy data & battery drain |
Standard robotic voices get grating after 5 minutes. EpubTidy leverages state-of-the-art neural speech models (such as Kokoro-82M and Supertonic-3) executing natively on the Apple Neural Engine.
Understands sentence structure, dramatic pauses, commas, question inflections, and chapter boundaries naturally.
Synthesizes audio in milliseconds with zero lag. No waiting for remote servers to stream audio bytes.
Control playback seamlessly from your Lock Screen or Dynamic Island with chapter progress and reading habit countdowns.

Studio Neural Narration
Kokoro & Supertonic on Apple Silicon
Other readers choke on broken CSS, locked font sizes, and missing covers. EpubTidy heals your file so both your eyes and your ears have a flawless journey.
Toggle between an unoptimized raw EPUB and its tidied result

Author: Nora Finch
<package xmlns="http://www.idpf.org/2007/opf" version="3.0">
<metadata xmlns:dc="http://purl.org/dc/elements/1.1/">
<dc:title>Tideline</dc:title>
<dc:creator id="creator">Nora Finch</dc:creator>
<dc:language>en</dc:language>
<meta property="belongs-to-collection">Coastlines</meta>
<meta property="group-position">1</meta>
<meta name="cover" content="cover-image"/>
</metadata>
<!-- Typography fully reflowable: no locked fonts -->
<item id="chapter1" href="text/ch01.xhtml" media-type="application/xhtml+xml"/>
</package>Replace missing artwork, correct title and author metadata, then export each improved EPUB.

Elian Rowe

June Mercer

S. L. Arden

Mara Vale

Wilderness Offline Mode
Zero Wi-Fi • Zero Cell Service • Zero Lag
Downloaded an eBook with broken formatting, missing covers, or locked 10px font sizes? EpubTidy heals your files with one tap. Heading outdoors where cell towers don’t reach? Your entire library and human-like neural narrator run natively on your iPhone or iPad with zero internet.
Syncs series indices, Dublin Core tags, and high-resolution covers so your library shelf looks museum-grade.
Validates character counts and keeps automated backup copies before writing changes directly into the EPUB zip container.
Direct iOS Files app integration, gesture controls, batch importing, and responsive Readium 2 layout.
From single-book quick fixes to full library quality diagnostics and neural read aloud.
Modify title, author, description, tags, ISBN, and series numbering. Overwrites directly into OCF EPUB zip without corrupting book structure.
Replace low-res or missing covers with high-definition artwork directly from Apple Books or your Photos library in one single tap.
Instantly audits your whole library for missing covers, empty authors, duplicate ISBNs, and filenames masquerading as titles.
Strips stubborn hardcoded CSS fonts, malformed &nbsp; spaces, and OCR ligature artifacts so your book looks native in Apple Books and Kindle.
Listen to your books hands-free with on-device natural speech models. Fully offline, zero battery-draining cloud audio streaming.
No accounts, no third-party analytics SDKs, and zero telemetry. Your books, metadata, and reading progress never leave your device.
Discover why book lovers are ditching $139/year cloud subscriptions, fixing ebooks on the go without laptops, and reclaiming 100% private book libraries.
How Kokoro-82M on Apple Neural Engine delivers studio-grade narration without cloud streaming or monthly fees.
Fix missing covers, ugly CSS locks, and Dublin Core metadata anywhere in under 30 seconds from your iPhone or iPad.
Avoid remote book wipeouts, telemetry trackers, and corporate license revocations with open W3C EPUB standards.
Learn why readers choose EpubTidy over Speechify and traditional e-readers.
Yes! That is one of EpubTidy’s greatest strengths. Unlike cloud-based TTS readers that stop working the second you lose cell coverage, EpubTidy runs its Neural Speech AI (including models like Kokoro-82M) directly on your device’s Apple Neural Engine. It functions 100% offline, whether you are camping deep in the woods, fishing off-grid, on an airplane flight, or commuting underground.
Speechify requires an expensive subscription ($139+ per year) and constantly streams audio from cloud servers, which rapidly drains your battery, consumes gigabytes of cellular data, and uploads your private reading material to their servers. In contrast, EpubTidy is completely private, local-first, requires zero subscriptions, works with zero internet, and includes comprehensive EPUB editing, cover enhancement, and formatting repair tools that Speechify does not offer.
EpubTidy does not use the robotic, flat text-to-speech voices common in older apps. Our integrated neural voice models are trained on rich human speech patterns, incorporating natural breath pauses, dialogue rhythm, emotional inflection, and punctuation nuances for an immersive listening experience you can enjoy for hours without fatigue.
Yes. While listed as an editor and repair utility, EpubTidy embeds a complete W3C-compliant Readium 2 rendering engine. You can read visually with customizable typography, four curated reading themes (Paper, Warm Light, Sepia, and OLED Night), font scaling, line height, dyslexia-friendly fonts, and multi-level Table of Contents navigation.
Yes. EpubTidy fully supports Dublin Core metadata (dc:title, dc:creator, dc:description, dc:date, dc:identifier) as well as Calibre series conventions (calibre:series, calibre:series_index) and EPUB 3 collections. When exported, your books maintain perfect series order in Apple Books and e-readers.
100% private. We operate zero cloud servers that store your book library. All parsing, AI voice synthesis, and editing happen locally inside your iOS sandbox. We do not include third-party tracking or advertising SDKs.
Available now on the App Store for iPhone and iPad. 100% on-device AI voice synthesis, zero subscription traps, and total freedom off the grid.