Rhino Beetle Diary

Raise a beetle with your kids

Only for iPhone

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

iPhone

No ads. Raise the beetle larva you found, starting today. See its stage and what to do next, and log growth with photos and stamps. Read-aloud for pre-readers. Rhino Beetle Diary is a care guide and growth journal for families raising a real Japanese rhinoceros beetle (Trypoxylus dichotomus) together. See at a glance what stage your beetle is in and what to do next. EASY FOR FIRST-TIMERS • Choose "caught", "got" or "bought", then answer when and how big — the app estimates its stage (1st–3rd instar larva, pupa, adult) • A shopping list of only what you're missing, plus illustrated setup steps • A daily "settling-in check" for the first week KNOW WHAT TO DO NOW • Each beetle card shows its stage, how many days you've raised it, and today's jobs • Jobs are split into "Kid" and "Grown-up"; grown-up jobs need confirmation • Seasonal mode: fall feeding, winter, the last spring soil change, early-summer pupation • Soil-change guide that stops you in spring or when a pupal chamber is visible • Big "Don't touch — just watch" reminders for the pre-pupa, pupa and just-emerged stages RECORD & REVIEW GROWTH • Stamps, photos, weight, temperature and notes on a timeline (delete any single entry) • A weight graph shows growth at a glance; temperature notes warn when it's outside the right range • The Summary tab compares all your beetles' growth, temperature trends, record counts and recent photos • Pick an icon for each beetle from templates or your own photos • A celebration screen when your beetle reaches a new stage PREMIUM (ONE-TIME PURCHASE) • 4 foreign species: Hercules, Caucasus, Atlas and Eastern Hercules beetles • Science project PDF: turn photos, graphs and notes into an A4 observation report • The Japanese rhinoceros beetle guide and all record features are free WHEN YOU NEED HELP • "Help!": fixes for fruit flies, mold, mites, larvae on the surface, not moving and more • "Ask": prepared answers to common questions, with illustrations • Topics about sickness or death gently guide kids to look together with a grown-up FOR KIDS WHO CAN'T READ YET • Read-aloud buttons on cards, questions and answers, with optional auto read-aloud • Simple words and lots of illustrations SUPPORTS MANY BEETLES • Japanese rhinoceros beetle, Hercules beetle, Caucasus beetle, Atlas beetle and Eastern Hercules beetle • Larval period, temperature, soil-change timing and whether they must be kept alone switch automatically by species • Seasonal guidance adjusts automatically for the Southern Hemisphere and the tropics FOR PARENTS • No ads • Records are stored only on the device and in your own private iCloud; nothing is sent to us or anyone else • Notification time and read-aloud settings are behind a parent check • Durations vary with temperature and are estimates. Stag beetles are not supported.

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The developer, Sami Kuribara, 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 Collected

    The developer does not collect any data from this app.

    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
    Sami Kuribara
    Size
    37.7 MB
    Category
    Education
    Compatibility
    Requires iOS 17.0 or later.
    • iPhone
      Requires iOS 17.0 or later.
    • Mac
      Requires macOS 14.0 or later and a Mac with Apple M1 chip or later.
    • Apple Vision
      Requires visionOS 1.0 or later.
    Languages
    English and 4 more
    • English, Japanese, Korean, Simplified Chinese, Traditional Chinese
    Age Rating
    4+
    • 4+
    • This app is rated 4+ with content restrictions.

      Some content may be rated higher, and may therefore be restricted and managed by the developer through in-app controls.
    • Learn More
    • In-App Controls
      Parental Controls
    In-App Purchases
    Yes
    Copyright
    © 2026 Explorers Lab Inc.
  • Developer Website
  • Privacy Policy

    • Supports

    • Family Sharing

      Some in-app purchases and subscriptions may be shareable with your family group when Family Sharing is enabled. Learn More

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