EPUB Reader vs Whio

Turn your EPUB and PDF library into a focused reading space built for comfort, attention, and a lasting reading habit. READ WITH COMFORT Import your own EPUB and PDF books and enjoy a native, responsive reading experience across iPhone, iPad, and Mac. Adjust typography, spacing, margins, themes, accent colors, and OpenDyslexic support until every page feels right. Search inside books, browse the table of contents, and return exactly where you left off. KEEP YOUR IDEAS Highlight meaningful passages, add notes and bookmarks, and bring insights from your whole library together in the Knowledge Vault. Export annotations as Markdown or create an annotated copy of a PDF when you want to keep working elsewhere. CHOOSE YOUR READING RHYTHM Read page by page, use RSVP speed reading to focus on one word at a time, or listen with read-aloud controls. Move between reading modes while keeping your place. BUILD A READING HABIT Set reading goals, maintain streaks, review weekly charts and activity heatmaps, record journal entries, unlock achievements, and turn unfamiliar words into vocabulary flashcards. STAY CONNECTED ACROSS APPLE DEVICES Use iCloud to sync supported reading progress, highlights, and notes. Keep an eye on your goals and library with Home Screen and Lock Screen widgets, plus Apple Watch companions for quick reading statistics. OPTIONAL AI READING TOOLS Connect your own compatible AI key to summarize chapters, explain or translate selected passages, explore character relationships, and create study cards. AI tools are optional, and availability depends on your chosen provider or supported on-device features. Violire is made for readers who want their books, notes, progress, and reading rituals in one calm, elegant place. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Whio is an EPUB and PDF reader for technical books on iPhone and iPad, with a focus on readability and accessibility. Technical books are full of code, and most readers aren't built for it. Whio keeps code examples readable, with clear syntax highlighting, preserved indentation and horizontal scrolling for long lines. You can zoom into a single example to look at it closely, or copy it to try it yourself. CUSTOMIZE TEXT AND CODE SEPARATELY Set the typography for prose and for code independently, so each one reads the way you prefer. THEMES FOR YOUR READING NEEDS Choose from high-contrast themes, softer contrast and tinted backgrounds, each available in light and dark versions. EXTRA SUPPORT AS YOU READ Enable optional reading aids if needed. Letter distinction gives letters more definition, so similar letters are easier to tell apart. A reading guide helps you keep your place on the page, and a focus window dims the text around the lines you're reading. YOUR NOTEBOOK Highlight passages, add notes and bookmarks, and find them again with search. You can export everything you've saved. Whio comes with its own collection of original technical books you can read in full for free, and every reading feature is included. Import your own DRM-free EPUBs and PDFs and read a short free preview of each one. Upgrade to Whio Unlimited to read every book you import in full, with a subscription or a one-time purchase. The app and all in-app purchases are licensed under the standard Apple terms: https://www.apple.com/legal/internet-services/itunes/dev/stdeula