Kotori is a free iOS app for finding Aozora Bunko works, reading with a dictionary at hand, and keeping the passages that stay with you.

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App Store

カムパネルラが手をあげました。

Kenji Miyazawa, Night on the Galactic Railroad

Meet the classics of Aozora Bunko in beautiful vertical text

Kotori is a free iOS app for finding Aozora Bunko works, reading with a dictionary at hand, and keeping the passages that stay with you.

Night on the Galactic Railroad in vertical text in Kotori, with the line 「カムパネルラが手をあげました。」 highlighted in yellow

Kotori

Aozora Bunko, in vertical text.

  • Free
  • No ads
  • No account
  • Works offline
  • iCloud sync
  • iPad ready

Start reading in 3 steps

Search, read, and go deeper.

  1. Search

    Search screen for works and authors

    Find works by title, author, or genre instantly.

  2. Read

    Reading screen with vertical text

    Enjoy beautiful vertical text with furigana and customizable themes.

  3. Go deeper

    Tapping a word in the text to look it up in the dictionary

    Look up words and highlight passages.

Try reading

Atsushi Nakajima, The Moon over the Mountain (山月記), first paragraph from Aozora Bunko

隴西ろうさいの李徴りちょうは才穎さいえい、天宝の末年、若くして名を虎榜こぼうに連ね、ついで江南尉こうなんいに補せられたが、性、、自みずから恃たのむところ頗すこぶる厚く、賤吏せんりに甘んずるを潔いさぎよしとしなかった。いくばくもなく官を退いた後は、故山こざん、獠略かくりゃくに帰臥きがし、人と交まじわりを絶って、ひたすら詩作に耽ふけった。下吏となって長く膝ひざを俗悪な大官の前に屈するよりは、詩家としての名を死後百年に遺のこそうとしたのである。しかし、文名は容易に揚らず、生活は日を逐おうて苦しくなる。李徴は漸ようやくに駆られて来た。この頃ころからその容貌ようぼうも峭刻しょうこくとなり、肉落ち骨秀ひいで、眼光のみ徒いたずらにとして、曾かつて進士に登第とうだいした頃の豊頬ほうきょうの美少年の俤おもかげは、何処どこに求めようもない。数年の後、貧窮に堪たえず、妻子の衣食のために遂ついに節を屈して、再び東へ赴き、一地方官吏の職を奉ずることになった。一方、これは、己おのれの詩業に半ば絶望したためでもある。曾ての同輩は既に遥はるか高位に進み、彼が昔、鈍物として歯牙しがにもかけなかったその連中の下命を拝さねばならぬことが、往年の儁才しゅんさい李徴の自尊心を如何いかに傷きずつけたかは、想像に難かたくない。彼は怏々おうおうとして楽しまず、狂悖きょうはいの性は愈々いよいよ抑え難がたくなった。一年の後、公用で旅に出、汝水じょすいのほとりに宿った時、遂に発狂した。或ある夜半、急に顔色を変えて寝床から起上ると、何か訳の分らぬことを叫びつつそのまま下にとび下りて、闇やみの中へ駈出かけだした。彼は二度と戻もどって来なかった。附近の山野を捜索しても、何の手掛りもない。その後李徴がどうなったかを知る者は、誰だれもなかった。

Tap a dotted word to look it up, or select text to highlight it.

Where to begin

The shelf

This week's pick: Botchan. Read the introduction →

Words from our readers

「小説が読みやすくて、良いと思いました。」

The novels are easy to read, and I think the app is good.

From an App Store review
「読みやすいので気に入りました。アイコンもかわいい。」

I like how easy it is to read. The icon is cute, too.

From an App Store review
「字も大きくできるし、カフェでランチしながら読んだことのない短編など読むのにちょうどよいし、よい時間となります」

I can make the text bigger, and it’s just right for reading short stories that are new to me over lunch at a café. It’s a good way to spend some time.

From an App Store review

Excerpts from reviews posted on the App Store. Translated from Japanese.

Using Kotori

Questions

What is Aozora Bunko?
Aozora Bunko is a digital library of Japanese literature whose copyrights have expired. You can read classics by authors like Natsume Soseki, Ryunosuke Akutagawa, and Kenji Miyazawa.
Is the app free?
Yes, Kotori is completely free to use with no ads.
Can I read offline?
Yes, once you download a book, you can read it offline.
Where is my data stored?
Reading history, highlights, notes, and other reading data are stored on your device. If you turn on iCloud sync in Settings, your bookshelf, highlights, and notes sync between iPhone and iPad through your iCloud. Syncing requires you to be signed in to iCloud, but there’s no Kotori account to create. Only anonymous usage analytics used to improve the app are sent to TelemetryDeck as described in the Privacy Policy.
Can I sync my bookshelf, highlights, and notes between iPhone and iPad?
Yes. Starting with version 2.4.0, you can sync your bookshelf (favorites, in progress, and finished) and your highlights and notes between iPhone and iPad with iCloud. Just turn it on in the app’s Settings. Syncing requires you to be signed in to iCloud, but there’s no Kotori account to create. Text size and theme stay per device.

Screen colors

Four themes

  • Light
  • Dark
  • Sepia
  • Sky

Changelog

Latest version

Version 2.4.0

Sync between iPhone and iPad

  • Sync your reading records between iPhone and iPad with iCloud. Turn it on in Settings.
  • A layout made for the larger iPad screen, with page turning from a keyboard.
  • Smoother page turning.
Read the changelog →

Japanese literary classics, in the palm of your hand.

Free, no ads, works offline