# MobileEOM vs CALC ToolBox

The clearest difference is in-app purchases: MobileEOM at none against CALC ToolBox's 1. MobileEOM also leads on iOS requirement (15.0 vs 17.6). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. CALC ToolBox sells 1 one-off in-app purchase. MobileEOM asks for nothing beyond the download.

MobileEOM ships an update weekly, CALC ToolBox every 5 days. The most recent releases landed on September 27, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | MobileEOM | CALC ToolBox |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/mobileeom/id1466201917/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Weekly | **Every 5 days** |
| Monetization | Free | — |
| Size | 113 MB | 5 MB |
| Requires iOS | **15.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [MODECSOFT LTD](https://appshunter.io/developer/1436515524) | [1BIGRIG Ltd](https://appshunter.io/developer/1792073283) |

## What reviewers say

### MobileEOM

[App page](https://appshunter.io/ios/app/mobileeom/id1466201917)

This app allows electrical engineers to design and record test results for electrical installations directly from their mobile devices. It integrates with desktop software to generate schematics, calculations, and BS7671 certificates and reports.

**Highlights:** Design electrical installations on the go, Record test results, Generate BS7671 certificates, Produce reports, Integrates with ElectricalOM software

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

**In-app purchases:** none


### CALC ToolBox

[App page](https://appshunter.io/ios/app/calc-toolbox/id6741718195)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $4.99 | one-time |


## Frequently asked questions

### Is MobileEOM free?

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

### Is CALC ToolBox free?

CALC ToolBox is free to download, with in-app purchases available.

### Do MobileEOM or CALC ToolBox have ads?

Neither MobileEOM nor CALC ToolBox shows ads.

### Which is updated more often, MobileEOM or CALC ToolBox?

MobileEOM ships an update weekly, and CALC ToolBox every 5 days. Most recently, MobileEOM was updated on September 27, 2026 and CALC ToolBox on October 4, 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.*