{"appstoreID":6813818431,"title":"Whio: EPUB & PDF Reader","subtitle":"Technical books & code","developerName":"Natalia Panferova","description":"Whio is an EPUB and PDF reader for technical books on iPhone and iPad, with a focus on readability and accessibility.\n\nTechnical 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.\n\nCUSTOMIZE TEXT AND CODE SEPARATELY\nSet the typography for prose and for code independently, so each one reads the way you prefer.\n\nTHEMES FOR YOUR READING NEEDS\nChoose from high-contrast themes, softer contrast and tinted backgrounds, each available in light and dark versions.\n\nEXTRA SUPPORT AS YOU READ\nEnable 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.\n\nYOUR NOTEBOOK\nHighlight passages, add notes and bookmarks, and find them again with search. You can export everything you've saved.\n\n\nWhio 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.\n\nThe app and all in-app purchases are licensed under the standard Apple terms: https://www.apple.com/legal/internet-services/itunes/dev/stdeula","bundleID":"com.nilcoalescing.Whio","appiconURL":"https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/e1/82/4d/e1824d3f-f833-8818-e38b-b3d99ddf57fd/Placeholder.mill/1024x1024w.webp","formattedPrice":"Free","appUpdated":"2026-10-19T20:19:32.000Z","appReleased":"2026-10-19T07:00:00.000Z","version":"1.0","platforms":["iphone","ipad"],"minOS":{"iphone":"Requires iOS 26.0 or later.","ipad":"Requires iPadOS 26.0 or later."},"topIAPs":[{"name":"Lifetime Unlimited","price":"$89.99"},{"name":"Unlimited","price":"$39.99"},{"name":"Unlimited","price":"$4.99"}],"languages":["EN"],"size":"35 MB","category":"Books","developerWebsite":"https://nilcoalescing.com/apps/whio","screenshots":[{"platform":"ipad","url":"https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/e8/27/94/e8279496-b161-464e-2fe5-a75c54e37d00/ipad-1.png/2752x2064w.webp"},{"platform":"ipad","url":"https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/36/9f/1d/369f1d79-13dd-afb2-9762-5bbefbd4b19d/ipad-4.png/2752x2064w.webp"},{"platform":"ipad","url":"https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/6f/83/9f/6f839fd0-3b07-5d71-3b79-6b16d4aa1740/ipad-2.png/2752x2064w.webp"},{"platform":"ipad","url":"https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/13/e6/9f/13e69f07-8575-f982-27aa-75fcb8343793/ipad-5.png/2752x2064w.webp"},{"platform":"ipad","url":"https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/01/1f/e3/011fe3aa-fc3b-faf7-578a-498dd3c1d937/ipad-3.png/2752x2064w.webp"},{"platform":"iphone","url":"https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/a2/07/ff/a207ffe8-5b7d-a52b-b875-4b6c94f6a0ea/iphone-1.png/1206x2622w.webp"},{"platform":"iphone","url":"https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/fd/ac/7e/fdac7e37-d9e7-cdac-934b-0a6bc3d13e9d/iphone-4.png/1206x2622w.webp"},{"platform":"iphone","url":"https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/3c/1b/77/3c1b7757-ed3c-2064-c9d3-a3ccd69b3d7f/iphone-2.png/1206x2622w.webp"},{"platform":"iphone","url":"https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/96/1d/06/961d0620-3318-7567-7f84-479c5e074f77/iphone-5.png/1206x2622w.webp"},{"platform":"iphone","url":"https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/ed/c7/a9/edc7a9d1-25c2-7a33-e8ff-227ad312c9ba/iphone-3.png/1206x2622w.webp"}]}