# Construction Calculator Master vs Sparky Toolbox

The clearest difference is price: Construction Calculator Master at Free against Sparky Toolbox's $19.99. Construction Calculator Master also leads on ratings volume (436 vs 4) and iOS requirement (11.0 vs 13.0). Sparky Toolbox's advantage is rating (5.0 vs 4.3) and in-app purchases (none vs 10). On ads and device support there is nothing between them.

Construction Calculator Master is free to download; Sparky Toolbox costs $19.99 up front. Construction Calculator Master sells 10 in-app purchases, starting at $0.99 per 7 days. Sparky Toolbox asks for nothing beyond the download.

Sparky Toolbox holds the better App Store score, 5.0 against 4.3. That said, the two scores are not equally well evidenced: Construction Calculator Master has 436 ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 70% of Construction Calculator Master's written reviews are positive against 100% of Sparky Toolbox's.

Construction Calculator Master ships an update fortnightly, Sparky Toolbox every 5 days. The most recent releases landed on October 23, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Construction Calculator Master | Sparky Toolbox |
| --- | --- | --- |
| Price | **Free** | $19.99 |
| Rating | [4.3 (436 ratings)](https://appshunter.io/ios/app/construction-calculator-master/id1623283646/reviews) | **[5.0 (4 ratings)](https://appshunter.io/ios/app/sparky-toolbox/id6782320797/reviews)** |
| Number of ratings | **436** | 4 |
| Positive reviews | 70.0% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 5 days** |
| Monetization | **Free with in-app purchases** | Paid |
| Size | 37 MB | 23 MB |
| Requires iOS | **11.0** | 13.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Uncaught Exception Inc](https://appshunter.io/developer/1457411536) | [TrinFJHTechSolutions LLC](https://appshunter.io/developer/6782320799) |

## What reviewers say

### Construction Calculator Master

[App page](https://appshunter.io/ios/app/construction-calculator-master/id1623283646)

This advanced construction calculator simplifies complex measurements for builders, carpenters, and remodelers. It offers a comprehensive suite of math functions, multi-unit support, and visual aids for calculations involving fractions, trigonometry, and rafters. Reduce errors and save time with its intuitive interface and customizable options.

**Highlights:** Multi-unit fraction support (feet, inches, yards, metric), Trigonometric functions with visualization, Rafter and triangle visualization, Imperial, Metric, and US Fractional units, Customizable fraction resolution, Memory and history functions, Dark mode support

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 week | $0.99 | per 7 days |
| 1 week | $2.99 | per 7 days |
| 1 week | $2.99 | per 7 days |
| 1 month | $3.99 | per month |
| 1 week | $4.99 | per 7 days |
| 1 month | $5.99 | per month |
| 1 month | $5.99 | per month |
| 1 month | $9.99 | per month |
| 1 year | $29.99 | per year |
| 1 year | $49.99 | per year |


### Sparky Toolbox

[App page](https://appshunter.io/ios/app/sparky-toolbox/id6782320797)

This app provides 9 essential electrical calculation tools for field electricians. Streamline project estimating, bidding, and field verification with instant results for Ohms Law, wire sizing, voltage drop, and more.

**Highlights:** 9 essential electrical calculators, Ohms Law calculations, Motor and Transformer OCPD & Wire Sizing, Conduit Fill and Voltage Drop calculators, Standard Dwelling Load and Transformer Sizing, Solar Panel calculator, Designed for field use with a clean interface

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

**In-app purchases:** none


## Frequently asked questions

### Is Construction Calculator Master free?

Construction Calculator Master is free to download, with in-app purchases available.

### Is Sparky Toolbox free?

Sparky Toolbox costs $19.99, with no in-app purchases.

### Which has better reviews, Construction Calculator Master or Sparky Toolbox?

Sparky Toolbox is rated higher. Construction Calculator Master averages 4.3 out of 5 from 436 ratings, while Sparky Toolbox averages 5.0 from 4 ratings.

### Do Construction Calculator Master or Sparky Toolbox have ads?

Neither Construction Calculator Master nor Sparky Toolbox shows ads.

### Which is updated more often, Construction Calculator Master or Sparky Toolbox?

Construction Calculator Master ships an update fortnightly, and Sparky Toolbox every 5 days. Most recently, Construction Calculator Master was updated on October 23, 2026 and Sparky Toolbox 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.*