# Circuit vs Underfoot

The clearest difference is price: Circuit at Free against Underfoot's $2.99. Circuit also leads on iOS requirement (15.1 vs 18.0). Underfoot's advantage is ads (none vs shown). On in-app purchases and device support there is nothing between them.

Circuit is free to download; Underfoot costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | Circuit | Underfoot |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| Rating | **[1.0 (2 ratings)](https://appshunter.io/ios/app/circuit-design/id1618728154/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 5 weeks | — |
| Monetization | Ad-supported | — |
| Size | 35 MB | 19 MB |
| Requires iOS | **15.1** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Om Prakash Chapagain](https://appshunter.io/developer/1618620262) | [Robert Ortner](https://appshunter.io/developer/1215177992) |

## What reviewers say

### Circuit

[App page](https://appshunter.io/ios/app/circuit-design/id1618728154)

Design, analyze, and solve electrical circuits with this comprehensive tool. It supports various circuit types, simplifies complex networks step-by-step, and includes educational resources on electrical laws and formulas. Save and share your designs locally.

**Highlights:** Design and analyze electrical circuits, Simplify complex resistor, capacitor, and inductor networks, Convert delta to wye and vice versa, Convert current to voltage sources and vice versa, Design or find resistor values, Step-by-step simplification visualization, Educational study tab with electrical laws and formulas

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

**In-app purchases:** none


### Underfoot

[App page](https://appshunter.io/ios/app/underfoot/id6739977204)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Circuit free?

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

### Is Underfoot free?

Underfoot costs $2.99, with no in-app purchases.

### Do Circuit or Underfoot have ads?

Circuit shows ads; Underfoot does not.

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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.*