My LoopCal

4–20 mA calibration toolkit

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

LoopCal is a fast, fully offline field toolkit for instrumentation and calibration technicians who work with 4–20 mA current loops and analog process signals. CONVERT INSTANTLY • 4–20 mA, 0–20 mA, 0–10 V, 1–5 V, and your own custom signal endpoints • Direct-acting and reverse-acting ranges • Linear and square-root (flow) transfer functions • Engineering ranges with any unit, including negative and offset spans • Percent, signal, and engineering values update as you type, with the substituted formula shown VERIFY AND DOCUMENT • Three-point, five-point, and custom 2–21-point checks • As-found and as-left runs with immediate error and pass/fail • Percent-of-span, signal-unit, or engineering-unit tolerance basis • Worst-point and maximum-error summaries LOOP POWER MATH • Shunt resistor voltage drop • Required supply voltage and remaining compliance • Maximum loop and wire resistance ORGANIZE AND SHARE • Save instruments, ranges, and history • Due-date reminders • PDF and CSV field worksheets with your company identity PRIVATE BY DESIGN • Everything runs on your device. No account, no ads, no tracking, no network. LoopCal is a calculation aid and field worksheet — not a calibrator, an accredited calibration service, or a replacement for manufacturer procedures. Always follow site lockout/tagout, operations authorization, device manuals, and approved procedures. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

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Preview your field worksheet before exporting, and explore a clearly labeled example from the calculator. Summary actions are easier to find, and saving now keeps report identities and calibration dates consistent.

Version 1.2

The developer, Neobile LLC, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

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    The developer does not collect any data from this app.

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    Information

    Seller
    Neobile LLC
    Size
    2 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 and 17 more
    • English, Arabic, Dutch, French, German, Indonesian, Italian, Japanese, Korean, Polish, Portuguese, Russian, Simplified Chinese, Spanish, Thai, Traditional Chinese, Turkish, Vietnamese
    Age Rating
    4+
    In-App Purchases
    Yes
    Copyright
    © 2026 Neobile LLC
  • Developer Website
  • Privacy Policy

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