Oku Diary
Notice it down. Make Haikus.
Only for iPhone
Free · Designed for iPhone. Not verified for macOS.
iPhone
Looking for a playful journal that makes it easier to start writing? You’ve found it.
Not sure how to begin? Take a photo. Say a few words, or capture a sound around you. Oku turns what you see, say, and hear into a starting point for your writing.
Write a line or write more. No streaks, no guilt, no pressure to fill a page. Oku gives you a line or two, then gets out of the way.
And on days when writing feels harder, play instead. Pick an observation and shape it into a haiku, one line at a time.
Share a favorite haiku, or keep it just for yourself — a little pocket book, growing one small moment at a time.
Built by a poet and writer, Oku draws inspiration from Bashō’s practice of turning everyday observations into poetry.
No account. No cloud journal. Your writing stays on your device, as files you control.
Small visual polish and fixes.
The developer, Chaai LLC, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Identifiers
- Usage Data
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Chaai LLC
- Size
- 38.5 MB
- Category
- Books
- Compatibility
Requires iOS 15.1 or later.
- iPhone
Requires iOS 15.1 or later. - iPod touch
Requires iOS 15.1 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
16+
- 16+
- Copyright
- © 2026 Cha.ai, LLC. All rights reserved.