# M2go Sensor vs Instrument Toolbox

The clearest difference is price: M2go Sensor at Free against Instrument Toolbox's $1.99. Instrument Toolbox's advantage is update cadence (weekly vs every 55 months) and iOS requirement (13.0 vs 15.6). On ads, in-app purchases and device support there is nothing between them.

M2go Sensor is free to download; Instrument Toolbox costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

M2go Sensor ships an update every 55 months, Instrument Toolbox weekly. The most recent releases landed on October 6, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | M2go Sensor | Instrument Toolbox |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 55 months | **Weekly** |
| Monetization | — | Paid |
| Size | 2 MB | 8 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [taskit](https://appshunter.io/developer/830597040) | [立娜 王](https://appshunter.io/developer/1761096632) |

## What reviewers say

### M2go Sensor

[App page](https://appshunter.io/ios/app/m2go-sensor/id1166199314)

**Features:** macOS Compatibility

**In-app purchases:** none


### 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


## Frequently asked questions

### Is M2go Sensor free?

M2go Sensor is free to download, with no in-app purchases.

### Is Instrument Toolbox free?

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

### Do M2go Sensor or Instrument Toolbox have ads?

Neither M2go Sensor nor Instrument Toolbox shows ads.

### Which is updated more often, M2go Sensor or Instrument Toolbox?

M2go Sensor ships an update every 55 months, and Instrument Toolbox weekly. Most recently, M2go Sensor was updated on October 6, 2026 and Instrument Toolbox on September 23, 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.*