Scientific Calculator FX-991CW

Equation, Matrix & Math Solver

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

Scientific Calculator FX-991CW is a capable scientific calculator for students, engineers, and technical work. It combines fast everyday calculation with structured advanced modes for complex numbers, statistics, distributions, spreadsheets, tables, equations, inequalities, base conversions, matrices, vectors, ratios, and math practice tools. Calculate and Complex modes are free. Scientific Calculator Pro unlocks the advanced modes with monthly, yearly, or lifetime access. The app is designed for direct input, readable results, local history, and quick switching between calculator workflows. It has no ads, no tracking, no accounts, and no analytics SDKs. This independently developed app is not affiliated with or endorsed by any calculator manufacturer. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://earthsensing.org/privacy/

Ratings & Reviews

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Calculation history now correctly restores previous expressions and results with the Up and Down replay controls, including after clearing the screen. Recalled calculations can now be edited naturally in Calculate, Complex, and Base-N modes. History navigation is also faster and more responsive.

Version 2.0.1

The developer, Murad Yaghi, 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
    • Murad Yaghi
    Size
    • 6.5 MB
    Category
    • Utilities
    Compatibility
    Requires iOS 17.0 or later.
    • iPhone
      Requires iOS 17.0 or later.
    • iPad
      Requires iPadOS 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
    Age Rating
    4+
    In-App Purchases
    Yes
    • Lifetime Pro $7.99
    • Monthly Pro $0.99
    • Yearly Pro $4.99
    • Learn More
    Copyright
    • © 2026 Earthsensing
  • Privacy Policy

    • More by Murad Yaghi

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