# My LoopCal — 4–20 mA calibration toolkit

> 4–20 mA calibration toolkit (iPhone/iPad app by Neobile LLC.)

- Source: https://appshunter.io/ios/app/my-loopcal/id6792422682 (this page in markdown: same URL + `.md`)
- Developer: [Neobile LLC](https://appshunter.io/developer/1080490647)
- Category: Utilities, Productivity
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 17.0 · 2 MB
- Languages: American English, Arabic, Dutch, French (France), German (Germany), Indonesian, Italian, Japanese, Korean, Polish and 8 more
- Released: 2026-07-29
- Data updated: 2026-08-06
- User reviews in markdown: https://appshunter.io/ios/app/my-loopcal/id6792422682/reviews.md

## What is My LoopCal?

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/

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Annual | $4.99 | per year |
| Monthly | $1.99 | per month |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Lifetime | $6.99 | one-time |



## Version history (last 1 release)

### 1.0 — 2026-07-29

No release notes.

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All apps by Neobile LLC: https://appshunter.io/developer/1080490647

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-06.*