# iCircuit vs DoE Toolkit

The clearest difference is in-app purchases: DoE Toolkit at none against iCircuit's 2. DoE Toolkit also leads on price ($9.99 vs $12.99). iCircuit's advantage is update cadence (every 4 weeks vs every 21 months). On ads, device support and iOS requirement there is nothing between them.

iCircuit costs $12.99 and DoE Toolkit $9.99 up front. iCircuit sells 2 in-app purchases, starting at $1.99 per month. DoE Toolkit asks for nothing beyond the download.

iCircuit ships an update every 4 weeks, DoE Toolkit every 21 months. The most recent releases landed on October 15, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | iCircuit | DoE Toolkit |
| --- | --- | --- |
| Price | $12.99 | **$9.99** |
| Rating | **[3.8 (135 ratings)](https://appshunter.io/ios/app/icircuit/id383359044/reviews)** | — |
| Number of ratings | **135** | — |
| Positive reviews | 61.1% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 4 weeks** | Every 21 months |
| Monetization | Paid | — |
| Size | 179 MB | 13 MB |
| Requires iOS | **13.0** | 14.5 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Krueger Systems, Inc.](https://appshunter.io/developer/299293363) | [Kal-El Software](https://appshunter.io/developer/394174930) |

## What reviewers say

### iCircuit

[App page](https://appshunter.io/ios/app/icircuit/id383359044)

Design and simulate analog and digital electronic circuits in real-time. This app offers a comprehensive component library, built-in test equipment, and the ability to create custom elements. It's ideal for learning, prototyping, and validating designs without physical components.

**Highlights:** Real-time circuit simulation, Extensive component library (300+), Built-in test equipment (multimeter, oscilloscope), Programmable Arduino and PIC microcontroller support, Custom element creation and sharing, Audio simulation

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| iCircuit Pro (Monthly) | $1.99 | per month |
| iCircuit Pro (Yearly) | $14.99 | per year |

**What reviewers like**

- 🚀 Great for learning and testing
- 👍 Intuitive and easy to use
- 💡 Programmable Arduino integration
- 👍 Useful for hobbyists and students

**What reviewers complain about**

- 🐛 Buggy and crashes frequently
- 🔧 Difficult to edit and delete components
- 🔧 Limited component library
- 🔧 Inaccurate simulation results in some cases

**Reported bugs**

- Oscilloscope and meter functions not working properly
- Saving and loading circuits can be unreliable
- Inconsistent behavior when rotating/flipping components
- Crashes when working with larger or more complex circuits

**Requested features**

- More components (e.g. transformers, triodes, MOSFETs)
- Ability to create custom components
- Frequency domain analysis (Bode plots, FFT)
- Improved wiring and component placement controls
- Better support for AC circuits and motors


### DoE Toolkit

[App page](https://appshunter.io/ios/app/doe-toolkit/id1608415467)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is iCircuit free?

iCircuit costs $12.99, and also offers in-app purchases.

### Is DoE Toolkit free?

DoE Toolkit costs $9.99, with no in-app purchases.

### Do iCircuit or DoE Toolkit have ads?

Neither iCircuit nor DoE Toolkit shows ads.

### Which is updated more often, iCircuit or DoE Toolkit?

iCircuit ships an update every 4 weeks, and DoE Toolkit every 21 months. Most recently, iCircuit was updated on October 15, 2026 and DoE Toolkit on October 9, 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.*