# iCircuit vs RF

The clearest difference is rating: RF at 4.9 against iCircuit's 3.8. RF also leads on in-app purchases (none vs 2) and review sentiment (91% vs 61%). iCircuit's advantage is update cadence (every 4 weeks vs every 4 months) and ratings volume (135 vs 22). On ads, monetization model and device support there is nothing between them.

iCircuit costs $12.99 and RF $7.99 up front. iCircuit sells 2 in-app purchases, starting at $1.99 per month. RF asks for nothing beyond the download.

RF holds the better App Store score, 4.9 against 3.8. That said, the two scores are not equally well evidenced: iCircuit has 135 ratings behind it against 22, so its average is the more settled of the two. Written reviews point the same way: 61% of iCircuit's written reviews are positive against 91% of RF's.

iCircuit ships an update every 4 weeks, RF every 4 months. The most recent releases landed on October 13, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | iCircuit | RF |
| --- | --- | --- |
| Price | $12.99 | **$7.99** |
| Rating | [3.8 (135 ratings)](https://appshunter.io/ios/app/icircuit/id383359044/reviews) | **[4.9 (22 ratings)](https://appshunter.io/ios/app/rf-toolbox-pro/id593044099/reviews)** |
| Number of ratings | **135** | 22 |
| Positive reviews | 61.1% of reviews | **91.1% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 4 weeks** | Every 4 months |
| Monetization | Paid | Paid |
| Size | 179 MB | 92 MB |
| Requires iOS | 13.0 | **11.1** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Krueger Systems, Inc.](https://appshunter.io/developer/299293363) | [Marcus Roskosch](https://appshunter.io/developer/334053438) |

## 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


### RF

[App page](https://appshunter.io/ios/app/rf-toolbox-pro/id593044099)

This app provides over 90 specialized tools for high-frequency electronics, catering to RF professionals, radio amateurs, and students. It offers calculations for PCB traces, filters, impedance, and more, with ongoing updates and new features planned.

**Highlights:** PCB Trace Width and Impedance, LC/L/T/Pi Match Calculation, Coax Cable Calculations, Amplifier and Attenuator Cascade, SWR/Reflection/Return Loss Conversion, Filter Design (Butterworth, Chebyshev), RF Units Conversion

**In-app purchases:** none


## Frequently asked questions

### Is iCircuit free?

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

### Is RF free?

RF costs $7.99, with no in-app purchases.

### Which has better reviews, iCircuit or RF?

RF is rated higher. iCircuit averages 3.8 out of 5 from 135 ratings, while RF averages 4.9 from 22 ratings.

### Do iCircuit or RF have ads?

Neither iCircuit nor RF shows ads.

### Which is updated more often, iCircuit or RF?

iCircuit ships an update every 4 weeks, and RF every 4 months. Most recently, iCircuit was updated on October 13, 2026 and RF on October 11, 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.*