U-KEY

Ask, Explain & Review Together

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

Keep study-group questions organized. Ask with text or photos, compare explanations, accept one, and save it for review. Questions get lost in ordinary group chats. U-KEY gives each question its own solution thread, so a study group can compare explanations, accept the most helpful one, and return to it later. Built for group study • Ask with text or a photo, with answer choices when needed. • Share more than one explanation using text, photos, or an in-app note. • Like useful explanations. The person who asked can accept the one that helped most. Review what mattered • Find solved and open questions instead of scrolling through old chat messages. • Save selected solutions to a personal review list. • Retry multiple-choice questions with the answer hidden and keep track of repeated mistakes. Optional AI guidance — in Korean, English, and Japanese • Get a hint based on accepted text solutions from the selected room. • Check your own work for a missing step or something worth reviewing. • AI and photo math recognition are optional and require separate consent. AI output may be wrong and should be checked independently. Private or public study rooms • Start alone in a private room, invite classmates with a limited-use code, or browse public rooms by subject. • Use real-time text and photo chat, search, pins, and notifications. • Report inappropriate content and block users in the app. The interface is available in Korean, English, and Japanese. AI responses are available in Korean, English, and Japanese.U-KEY is intended for users aged 14 and older.Some AI, saved-solution, and pin features have free usage limits or require Pro. Fair-use limits also apply to Pro. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ U-KEY Terms of Service: https://popolabs.app/ukey/terms Privacy Policy: https://popolabs.app/ukey/privacy

Ratings & Reviews

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The developer, dohyeon kim, 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
    • Other Data

  • Data Not Linked to You

    The following data may be collected but it is not linked to your identity:

    • Diagnostics

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
dohyeon kim
Size
76 MB
Category
Education
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 Japanese
Age Rating
13+
  • 13+
  • Learn More
  • Contains
    Messaging and Chat
    User-Generated Content
In-App Purchases
Yes
  • U-KEY Pro Annual $22.99
  • U-KEY Pro Monthly $2.99
  • Learn More
Copyright
© 2026 PopoLabs
  • Privacy Policy