Scientific Calculator: History

Edit & reuse full expressions

Only for iPhone

$1.99 · Designed for iPhone. Not verified for macOS.

iPhone

See and edit complete expressions, then search and reuse past calculations. One purchase, with no ads or subscription. Ever mistype one digit and have to re-enter the whole calculation? FormulaCalc keeps the entire expression visible. Tap to place the cursor, fix just that one digit, and get the new result instantly. Both the expression and the result are saved to history, so you can search past calculations and either reuse the full expression or insert just the result — no retyping. SEE IT, FIX IT • The full expression stays visible while you type • Tap to move the cursor, select a range to replace it • Operator precedence, parentheses, and implicit multiplication (2π, 2(3+4)) • Live result preview while typing, with clear error hints • Undo, redo, and external keyboard support HISTORY YOU CAN ACTUALLY USE • Expressions and results saved together (up to 500 entries) • Search, favorites, individual delete, and text export • Reuse the whole expression, or insert only the result at the cursor A COMPLETE SCIENTIFIC CALCULATOR • Trig, inverse trig, hyperbolic, logarithms, roots, powers, factorial, modulo, absolute value • DEG / RAD always visible, switched with one tap • Calculator-style percentages (200+10% = 220) • Ans and memory keys (MC / MR / M+ / M−) • Automatic, scientific, and engineering notation with 6–15 significant digits • A dedicated landscape layout with expression, history, and keys side by side PAY ONCE, KEEP IT PRIVATE • No ads, no tracking, no account, no network access • Expressions, history, and settings never leave your device • One purchase unlocks everything — no subscription Light and dark appearance, haptic feedback, and VoiceOver support. From homework to engineering estimates, FormulaCalc makes "fix it and reuse it" the normal way to calculate.

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We refreshed the app icon in this update.

Version 1.0.1

The developer, CAEN Co., Ltd., 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
    • CAEN, K.K.
    Size
    • 1.9 MB
    Category
    • Utilities
    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 Japanese
    Age Rating
    4+
    Copyright
    • © 2026 CAEN Inc.
  • Privacy Policy

    • Supports

    • Family Sharing

      Up to six family members can use this app with Family Sharing enabled.

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