Choose a book
The library is sorted by level; from picture books to Korean classics, every book shows its author, year and page count. You start with a book that fits your level.

How Gumiho builds its reading experience, and what each feature is for.
The library is sorted by level; from picture books to Korean classics, every book shows its author, year and page count. You start with a book that fits your level.

The meaning, part of speech, example sentences and audio pronunciation open on a card. Add any word to your own list with a single tap.

The words you add become review cards and come back at the right time. The games reinforce the same words in a different way.

You can tap any word you don't know while reading. Gumiho finds the base form from the conjugated word by itself and shows the meaning, part of speech and two example sentences on the same card.

Every word you save is scheduled with the SM-2 algorithm. Words you know appear less and less often, words you struggle with more often — so your review time goes to the words you actually need, not to rote drilling.

Gumiho has three games, each training a different skill. Every game you win brings gold and a new record; gold unlocks the pages of paid books.

Gumiho is your companion, inspired by the legend of the nine-tailed fox. As you read and learn new words, its tails grow one by one. What it becomes when it reaches the ninth tail — we will all find out together.

Same book, same tap. Word meanings and the app interface are available in Turkish, English, Vietnamese, Thai and Indonesian; you can change the language in settings at any time.

The library holds 290 books in eight categories, graded from A1 to C1. All texts are complete and come with source information; the books ship with the app, nothing to download.
There are free books in every category, and the dictionary and review cards are unlimited. In paid books, page turns are unlocked with gold or by watching an optional ad. Whether to watch an ad is always your choice.