Guiin Book - Who's My Guiin?

Saju for your relationships

Free · In‑App Purchases · Designed for iPad. Not verified for macOS.

What kind of connection do you have with the people around you? GUIIN BOOK is a relationship collection powered by Saju, helping you discover the meaning of your connections with the people you actually know. Add friends, partners, family, and coworkers to see how each relationship feels and what makes each connection unique. The same relationship can look different from each side. Compare how you see someone with how they see you, and explore the people around you on your Relationship Map. Discover Guiin — people who may have a special influence on your path — and gradually fill your own Guiin collection. In Groups, enjoy shared relationship rankings, daily questions, birthdays, good days to meet, and more with your friends. Share a relationship result with someone and continue by seeing your connection from their point of view. A new way to discover people and explore the relationships around you. Find your connections in GUIIN BOOK.

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- You can now upload a profile photo. - Fixed an issue where push notifications weren't being delivered. - Fixed other minor bugs and made general improvements.

Version 1.0.2

The developer, Essential Corp., 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 Linked to You

    The following data may be collected and linked to your identity:

    • Purchases
    • Contact Info
    • User Content
    • Identifiers

Privacy practices may vary, for example, based on the features you use or your age. Learn More

Accessibility

The developer has not yet indicated which accessibility features this app supports. Learn More

Information

Seller
Essential Corp.
Size
8.3 MB
Category
Entertainment
Compatibility
Requires iOS 15.0 or later.
  • iPhone
    Requires iOS 15.0 or later.
  • iPad
    Requires iPadOS 15.0 or later.
  • iPod touch
    Requires iOS 15.0 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.
Languages
English and 3 more
  • English, Japanese, Korean, Traditional Chinese
Age Rating
13+
In-App Purchases
Yes
Copyright
© 2026 Essential Corp.
  • Privacy Policy

    • More by Essential Corp.

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