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YucDu 佑瑄｜iOS & iPadOSAvailable

Frequently Asked Questions

Do I need to sign up or sign in to use YucDu?​

No. YucDu is a read-only reader — just open it to read every article, save favorites, search and read offline.

Where are my saved articles?​

Tap the heart on any article card or in the article view to save it; your saved articles are in Library > Favorites. When you're signed in to iCloud, favorites sync with devices on the same Apple Account. See Library.

Where did the Categories and Favorites tabs go?​

The current version's tabs are Home, Explore, Library, Settings and Search. Browsing by category has moved to the Explore tab, and favorites, reading history and offline articles are all in the Library tab. The old popular tags and category grid are no longer available — use the category list in Explore instead.

How do I continue an article I didn't finish?​

Go to Home or Library > Continue and tap the article. Once it opens, tap the Continue Reading button at the bottom to jump back to where you left off.

Can I read articles without an internet connection?​

Yes. Articles you open are saved automatically as offline copies, so you can reopen them without a connection (they're cleared automatically after about 14 days). You can view and manage them in Library > Offline Reading or Settings > Data > Offline Cache.

How do I delete a single offline article?​

In the offline list, touch and hold the article > Remove Offline Cache, then confirm. To delete them all at once, tap Clear All.

How do I clear my reading history?​

Go to Library > History and tap Clear History at the top of the list. Your reading history and progress are cleared together; favorites are kept. You can also touch and hold a single article and choose Remove from History.

How do I change the language?​

The interface follows your device language. To change it, go to Settings > Language, tap Open to go to iOS Settings, and choose a language for YucDu. Supported languages: 日本語, 繁體中文, 简体中文, English and Tiếng Việt.

Why is the app showing Japanese?​

Japanese is YucDu's primary language. If none of your device's preferred languages is one of the five supported languages, the interface appears in Japanese. Also, some small English labels on Home (such as LATEST) and the font size preview sentence stay the same in every language.

How are the four designs different?​

  • Calm Reading (default): Mincho body text and text-first lists — ideal for focused reading.
  • Editorial: a newspaper and magazine layout with bold Mincho headlines and rules.
  • Lifestyle: soft rounded type and large rounded cards.
  • Indigo: indigo bands and bold Gothic type for a striking look.

Switch in Settings > Design. See Design and Appearance.

How do I switch to dark mode or change colors?​

Go to Settings > Appearance: Appearance Mode offers Light / Dark / Auto; Color Palette offers 10 palettes; and Theme Color changes the color of highlights such as the progress bar and category labels. With the Midnight Reading palette, the app always stays dark.

I changed the theme color — why didn't the buttons change?​

The theme color only applies to highlights (the progress bar, category labels, section labels, the favorite heart and so on). Buttons and links follow your design and color palette, so change the Color Palette to change them.

How are the three display styles on Home different?​

  • C Card (default): cards with cover images; with Calm Reading, a text-first list.
  • B Magazine: large numbers with bold Mincho headlines.
  • A Minimal: hairline dividers, no images.

Switch in Settings > Appearance > Display Style.

How do I change the text size while reading?​

Tap Aa at the top right of an article, or go to Settings > Appearance > Font Size, and choose S Small, M Medium or L Large.

How do I reset a zoomed image?​

In the full-screen image viewer, double-tap the image to reset it to its original size.

Why can't YouTube videos play inside the app?​

YouTube videos appear as a card. Tap Open Video to play the video in the YouTube app or your browser.

Why am I not getting new article notifications?​

New article notifications are in preparation and are not being sent yet, so you won't receive any for now. You can check the notification permission in Settings > Notifications. See Notifications.

Does YucDu have ads or in-app purchases?​

The current version shows no ads and has no in-app purchases or subscriptions.

Are my favorites and reading history safe?​

Favorites are stored on this device, or — with iCloud sync — in the private database of your own iCloud account. Reading history, reading progress and recent searches are stored only on your device. See Privacy and Permissions.

What should I do if an article won't load?​

Tap Try Again on the screen. If it still won't load, check Settings > Service > Service Status to see whether the service is running normally. See Service Status and Legal Documents.

Where can I read the Privacy Policy and Terms of Service?​

Go to Settings > Legal to read the Privacy Policy and Terms of Service in the app, or open the full legal section in your browser.