# Simple Circuit Builder vs WeldCalcs

The clearest difference is price: Simple Circuit Builder at Free against WeldCalcs's $1.99. Simple Circuit Builder also leads on update cadence (every 3 weeks vs every 15 months) and ratings volume (28 vs 1). WeldCalcs's advantage is rating (5.0 vs 4.0). On ads, in-app purchases and device support there is nothing between them.

Simple Circuit Builder is free to download; WeldCalcs costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

WeldCalcs holds the better App Store score, 5.0 against 4.0. That said, the two scores are not equally well evidenced: Simple Circuit Builder has 28 ratings behind it against 1, so its average is the more settled of the two.

Simple Circuit Builder ships an update every 3 weeks, WeldCalcs every 15 months. The most recent releases landed on October 1, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | Simple Circuit Builder | WeldCalcs |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Rating | [4.0 (28 ratings)](https://appshunter.io/ios/app/simple-circuit-builder/id1294616098/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/weldcalcs/id1422441562/reviews)** |
| Number of ratings | **28** | 1 |
| Positive reviews | 52.6% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 15 months |
| Monetization | **Free** | Paid |
| Size | 14 MB | 17 MB |
| Requires iOS | **14.0** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [David White](https://appshunter.io/developer/911163945) | [Glendale Coding Labs, Inc](https://appshunter.io/developer/1266859626) |

## What reviewers say

### Simple Circuit Builder

[App page](https://appshunter.io/ios/app/simple-circuit-builder/id1294616098)

This virtual lab offers a hands-on experience for learning about resistors and circuit resistance. Easily build and test series and parallel circuits, measure voltage and current, and understand the impact of component changes in real-time.

**Highlights:** Build circuits with up to eight components, Five component types, Virtual volt and amp meters, Adjustable resistor and voltage values, Real-time circuit analysis, Demonstrates 'Opens' and 'Shorts'

**Features:** macOS Compatibility

**In-app purchases:** none


### WeldCalcs

[App page](https://appshunter.io/ios/app/weldcalcs/id1422441562)

This engineering calculator app assists in the preliminary sizing of fillet welds for steel construction. It computes section properties for typical welding patterns, allowing users to input dimensions and applied forces/moments to determine the maximum resisting resultant force and initial weld size.

**Highlights:** Fillet weld design sizing, Section property calculation, Elastic Method calculations, Input dimensions and forces, Determines maximum resisting force, Reference equations available

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Simple Circuit Builder free?

Simple Circuit Builder is free to download, with no in-app purchases.

### Is WeldCalcs free?

WeldCalcs costs $1.99, with no in-app purchases.

### Which has better reviews, Simple Circuit Builder or WeldCalcs?

WeldCalcs is rated higher. Simple Circuit Builder averages 4.0 out of 5 from 28 ratings, while WeldCalcs averages 5.0 from 1 ratings.

### Do Simple Circuit Builder or WeldCalcs have ads?

Neither Simple Circuit Builder nor WeldCalcs shows ads.

### Which is updated more often, Simple Circuit Builder or WeldCalcs?

Simple Circuit Builder ships an update every 3 weeks, and WeldCalcs every 15 months. Most recently, Simple Circuit Builder was updated on October 1, 2026 and WeldCalcs on October 16, 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.*