True Pressure

Quick kTP calculator

$2.99 · Designed for iPad

Field-ready P–T correction: true pressure from altitude (MSL), manual temperature input, clear kPa/mmHg/inHg readouts. iPad supported. True Pressure gives medical physicists quick access to ambient temperature and barometric pressure to compute the ion-chamber temperature/pressure correction factor (kTP). The app can read on-device sensors (temperature read from paired probe if available, pressure via barometric sensor or network service when supported by device/region) and also supports manual entry. Values are displayed in common units (kPa, mmHg, inHg; °C/°F; meters/feet) and the kTP factor is calculated versus user-set reference conditions (e.g., 22 °C, 101.325 kPa). Features • Current temperature and atmospheric pressure (with unit conversions) • kTP calculation against configurable reference conditions • Manual input mode for labs without supported sensors • Dark Mode support and large, high-contrast readout Important This tool is intended for qualified users. It does not replace a calibrated thermometer or barometer and is not a medical device. Verify readings against your facility’s calibrated instruments before use in clinical QA or dosimetry.

Ratings & Reviews

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

• Added full iPad support (all orientations, adaptive layout). • Added option to enter temperature manually for P–T corrections. • Increased mmHg display precision to two decimal places.

Version 1.1

The developer, Howard Salmon, 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
      • Howard Salmon
    • Size
      • 1.5 MB
    • Category
      • Utilities
    • Compatibility
      Requires iOS 16.6 or later.
      • iPhone
        Requires iOS 16.6 or later.
      • iPad
        Requires iPadOS 16.6 or later.
      • Mac
        Requires macOS 13.5 or later and a Mac with Apple M1 chip or later.
      • Apple Vision
        Requires visionOS 1.0 or later.
    • Languages
      • English
    • Age Rating
      4+
    • Copyright
      • © 2025 Howard Salmon
  • Privacy Policy

    • Supports

    • Family Sharing

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

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