Rounding Unlocked

K-5 Rounding & Estimation App

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

Rounding Unlocked teaches kids how to round numbers the right way — through understanding, not just memorization. Built by a real educator with 20+ years of experience teaching in Philadelphia classrooms, this app takes children through 6 carefully sequenced worlds that build rounding fluency from the ground up. What your child will learn: World 1: What is Rounding? — number lines and the mountain rule World 2: Rounding to the Nearest 10 — two-digit numbers World 3: Rounding to the Nearest 100 — three-digit numbers World 4: Rounding to the Nearest 1,000 — four-digit numbers World 5: Rounding Decimals — to the nearest whole number World 6: Estimating with Rounding — real-world problem solving Features: Interactive tips that teach the concept before practice begins Visual number lines, mountain diagrams, and place value spotlights 10-question practice and quiz for every world Rounding Master Challenge — 40 questions across all 6 worlds Audio narration for every tip — perfect for struggling readers Worlds 1 and 2 are completely free Rounding is one of the most important foundational math skills. Unlock it today.

Ratings & Reviews

  • This app hasn’t received enough ratings or reviews to display an overview.

Improved user experience.

Version 1.0.1

The developer, One On One Tutoring Service, 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
    One On One Tutoring Service, Inc.
    Size
    52.4 MB
    Category
    Education
    Compatibility
    Requires iOS 15.1 or later.
    • iPhone
      Requires iOS 15.1 or later.
    • iPad
      Requires iPadOS 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.
    Languages
    English
    Age Rating
    4+
    In-App Purchases
    Yes
    Copyright
    © 2026 One On One Tutoring Service, 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

    More by One On One Tutoring Service

    You Might Also Like