# Instrument Toolbox vs I&C Tech Tools

The clearest difference is price: I&C Tech Tools at Free against Instrument Toolbox's $1.99. Instrument Toolbox's advantage is in-app purchases (none vs 2) and iOS requirement (13.0 vs 15.1). On update cadence, ads and device support there is nothing between them.

I&C Tech Tools is free to download; Instrument Toolbox costs $1.99 up front. I&C Tech Tools sells 2 in-app purchases, starting at $4.99 per month. Instrument Toolbox asks for nothing beyond the download.

Instrument Toolbox ships an update weekly, I&C Tech Tools every 4 days. The most recent releases landed on September 23, 2026 and June 30, 2026 respectively.

## The numbers

| Metric | Instrument Toolbox | I&C Tech Tools |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | — | **[1.0 (1 ratings)](https://appshunter.io/ios/app/i-and-c-tech-tools/id6756155332/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Weekly | **Every 4 days** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 8 MB | 43 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [立娜 王](https://appshunter.io/developer/1761096632) | [LONNIE DALE RAWLS](https://appshunter.io/developer/1858762647) |

## What reviewers say

### Instrument Toolbox

[App page](https://appshunter.io/ios/app/instrument-toolbox/id6698856248)

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.

**Highlights:** PPM to mg/m³ 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

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### I&C Tech Tools

[App page](https://appshunter.io/ios/app/i-and-c-tech-tools/id6756155332)

This app offers essential calculation tools for instrumentation and control technicians and engineers. It provides free access to basic tools, with advanced calculators available through a one-time in-app purchase or subscription.

**Highlights:** Basic instrumentation calculations, Free access to selected tools, Advanced calculators via in-app purchase, Practical reference tools, Ongoing improvements and updates

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| I&C Tech Tools - Monthly Access | $4.99 | per month |
| I&C Tech Tools - Yearly | $49.99 | per year |


## Frequently asked questions

### Is Instrument Toolbox free?

Instrument Toolbox costs $1.99, with no in-app purchases.

### Is I&C Tech Tools free?

I&C Tech Tools is free to download, with in-app purchases available.

### Do Instrument Toolbox or I&C Tech Tools have ads?

Neither Instrument Toolbox nor I&C Tech Tools shows ads.

### Which is updated more often, Instrument Toolbox or I&C Tech Tools?

Instrument Toolbox ships an update weekly, and I&C Tech Tools every 4 days. Most recently, Instrument Toolbox was updated on September 23, 2026 and I&C Tech Tools on June 30, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*