Instrument Toolbox vs My LoopCal
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
Instrument Toolbox
A professional calculator designed for industrial control, automation, and instrumentation engineers. It offers quick conversions and calculations for gas concentration, units, steam properties, flange levels, and pipeline flow. Ideal for both field debugging and engineering design.
- PPM to mg/mยณ conversion with compensation
- Industrial unit conversion (pressure, volume, temp, etc.)
- Saturated steam pressure and density calculator
- Flange level migration calculations
- Pipeline flow and velocity calculator
- Real-time calculation results
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Industrial Control & Instrumentation Toolbox - Your Smart Industrial Calculator A professional calculation toolbox designed for industrial control, automation, and instrumentation engineers. Whether for field debugging or engineering design, it helps you quickly complete various professional calculations. Core Features: PPM to mg/mยณ Converter: Gas concentration unit conversion, supports custom molecular weight, built-in quick selection of common gas molecular weights, with environmental temperature and pressure compensation Unit Converter: Covers easy conversion of industrial measurement units including: Pressure (8 units including MPa, kPa, bar, psi, etc.) Volume Temperature Length Mass Saturated Steam Calculator: Input temperature to obtain saturated steam pressure, or input pressure to calculate saturated steam density, meeting steam system design requirements Flange Level Migration: Supports single/dual flange level calculations, with inputs for medium density, flange distance, and other parameters for precise level measurement calibration Pipeline Flow & Velocity Calculator: Applicable for both gas and liquid media, integrates velocity calculation, flow calculation, and diameter calculation, incorporating temperature, pressure, and other operating conditions Key Features: Clean and intuitive interface, easy operation Real-time calculation results Supports standard and operating condition conversions Built-in reference values like standard atmospheric pressure Suitable for both field engineering and design office scenarios This app is an essential professional tool for industrial automation, significantly improving engineering calculation efficiency. Target Users: Automation Engineers, Instrumentation Engineers, Process Engineers, Equipment Engineers, and other industrial control professionals.
My LoopCal
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LoopCal is a fast, fully offline field toolkit for instrumentation and calibration technicians who work with 4โ20 mA current loops and analog process signals. CONVERT INSTANTLY โข 4โ20 mA, 0โ20 mA, 0โ10 V, 1โ5 V, and your own custom signal endpoints โข Direct-acting and reverse-acting ranges โข Linear and square-root (flow) transfer functions โข Engineering ranges with any unit, including negative and offset spans โข Percent, signal, and engineering values update as you type, with the substituted formula shown VERIFY AND DOCUMENT โข Three-point, five-point, and custom 2โ21-point checks โข As-found and as-left runs with immediate error and pass/fail โข Percent-of-span, signal-unit, or engineering-unit tolerance basis โข Worst-point and maximum-error summaries LOOP POWER MATH โข Shunt resistor voltage drop โข Required supply voltage and remaining compliance โข Maximum loop and wire resistance ORGANIZE AND SHARE โข Save instruments, ranges, and history โข Due-date reminders โข PDF and CSV field worksheets with your company identity PRIVATE BY DESIGN โข Everything runs on your device. No account, no ads, no tracking, no network. LoopCal is a calculation aid and field worksheet โ 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/
Screenshots
Verdict
The clearest difference is price: My LoopCal at Free against Instrument Toolbox's $1.99. Instrument Toolbox's advantage is in-app purchases (none vs 3) and update cadence (weekly vs monthly). On ads and device support there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
My LoopCal is free to download; Instrument Toolbox costs $1.99 up front. My LoopCal sells 3 in-app purchases, starting at $1.99 per month. Instrument Toolbox asks for nothing beyond the download.
Instrument Toolbox ships an update weekly, My LoopCal monthly. The most recent releases landed on September 23, 2026 and October 4, 2026 respectively.
| Parameter | Instrument Toolbox | My LoopCal |
|---|---|---|
| Price | $1.99 | Free โ better |
| Positive reviews | 100.0% of reviews | โ |
| Update frequency | Weekly โ better | Monthly |
| Ads | No | No |
| In-app purchases | No โ better | Yes |
| Monetization | Paid | โ |
| Devices | iPhone, iPad, iPod โ better | iPhone, iPad |
| Requires iOS | 13.0 โ better | 17.0 |
| Further details โ not scored | ||
| Size | 8 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | ็ซๅจ ็ | Neobile LLC |
In-app purchases
Instrument Toolbox
No in-app purchases
My LoopCal
- Monthly$1.991 Month
- Annual$4.991 Year
- Lifetime$6.99
Questions
Is Instrument Toolbox free?
Is My LoopCal free?
Do Instrument Toolbox or My LoopCal have ads?
Which is updated more often, Instrument Toolbox or My LoopCal?
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