# Electrical Calculation Tools vs Lux Meter Pros

The clearest difference is price: Lux Meter Pros at Free against Electrical Calculation Tools's $1.99. Electrical Calculation Tools's advantage is in-app purchases (none vs 3) and iOS requirement (13.0 vs 16.6). On update cadence, ads and device support there is nothing between them.

Lux Meter Pros is free to download; Electrical Calculation Tools costs $1.99 up front. Lux Meter Pros sells 3 in-app purchases, starting at $0.99 per 7 days. Electrical Calculation Tools asks for nothing beyond the download.

Electrical Calculation Tools ships an update every 5 months, Lux Meter Pros every 4 months. Both last shipped on October 24, 2026.

## The numbers

| Metric | Electrical Calculation Tools | Lux Meter Pros |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/lux-meter-pros/id6740999944/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 50.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 4 months** |
| Monetization | — | Free with in-app purchases |
| Size | 37 MB | 25 MB |
| Requires iOS | **13.0** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Kantaben Gorasiya](https://appshunter.io/developer/1640260396) | [DADLINK TECHNOLOGIES LIMITED](https://appshunter.io/developer/1736032380) |

## What reviewers say

### Electrical Calculation Tools

[App page](https://appshunter.io/ios/app/electrical-calculation-tools/id6446797237)

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

**In-app purchases:** none


### Lux Meter Pros

[App page](https://appshunter.io/ios/app/lux-meter-pros/id6740999944)

This tool transforms your iPhone into a professional light testing device. It measures lux levels, conducts emergency lighting discharge tests, and generates compliance certificates for UK electricians and facility managers.

**Highlights:** Real-time lux measurement, Photo-based light readings, Room grid mapping, Emergency light testing (BS 5266), Certificate generation (PDF), Exportable reports (PDF/CSV), Historical tracking

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Lux Pass | $0.99 | per 7 days |
| Monthly Lux Pass | $2.99 | per month |
| Annual Lux Pass | $24.99 | per year |


## Frequently asked questions

### Is Electrical Calculation Tools free?

Electrical Calculation Tools costs $1.99, with no in-app purchases.

### Is Lux Meter Pros free?

Lux Meter Pros is free to download, with in-app purchases available.

### Do Electrical Calculation Tools or Lux Meter Pros have ads?

Neither Electrical Calculation Tools nor Lux Meter Pros shows ads.

### Which is updated more often, Electrical Calculation Tools or Lux Meter Pros?

Electrical Calculation Tools ships an update every 5 months, and Lux Meter Pros every 4 months. Most recently, Electrical Calculation Tools was updated on October 24, 2026 and Lux Meter Pros on October 24, 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.*