# Circuit Simulator vs Arduino Modules Pro

The clearest difference is price: Circuit Simulator at Free against Arduino Modules Pro's $4.99. Circuit Simulator also leads on iOS requirement (15.3 vs 17.0). Arduino Modules Pro's advantage is in-app purchases (none vs 8). On update cadence, ads and device support there is nothing between them.

Circuit Simulator is free to download; Arduino Modules Pro costs $4.99 up front. Circuit Simulator sells 8 in-app purchases, starting at $0.99 per month. Arduino Modules Pro asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on November 8, 2026 and November 10, 2026 respectively.

## The numbers

| Metric | Circuit Simulator | Arduino Modules Pro |
| --- | --- | --- |
| Price | **Free** | $4.99 |
| Rating | **[4.7 (93 ratings)](https://appshunter.io/ios/app/circuit-simulator-voltsim/id6736870364/reviews)** | — |
| Number of ratings | **93** | — |
| Positive reviews | 76.9% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | Free with in-app purchases | — |
| Size | 105 MB | 31 MB |
| Requires iOS | **15.3** | 17.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Sindhu Gopi](https://appshunter.io/developer/1773585161) | [ALG Software Lab](https://appshunter.io/developer/1650561236) |

## What reviewers say

### Circuit Simulator

[App page](https://appshunter.io/ios/app/circuit-simulator-voltsim/id6736870364)

Design and simulate electronic and digital circuits in real-time. Visualize voltage and current flow, and analyze signals with oscilloscopes and multimeters. Offers a user-friendly experience for circuit design and digital electronic analysis.

**Highlights:** Real-time circuit simulation, Voltage and current analysis, Multichannel oscilloscope, Digital circuit simulation, User-friendly interface, Circuit design tools

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

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Extensions Subscription | $0.99 | per month |
| Sensors Extension | $0.99 | one-time |
| Custom Chips Extension | $1.99 | one-time |
| Instruments extension | $2.99 | one-time |
| Analog Extension | $3.99 | one-time |
| Misc Extension | $3.99 | one-time |
| Digital Extension | $3.99 | one-time |
| Extension Pack | $12.99 | one-time |


### Arduino Modules Pro

[App page](https://appshunter.io/ios/app/arduino-modules-pro/id6743318515)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Circuit Simulator free?

Circuit Simulator is free to download, with in-app purchases available.

### Is Arduino Modules Pro free?

Arduino Modules Pro costs $4.99, with no in-app purchases.

### Do Circuit Simulator or Arduino Modules Pro have ads?

Neither Circuit Simulator nor Arduino Modules Pro shows ads.

### Which is updated more often, Circuit Simulator or Arduino Modules Pro?

Circuit Simulator ships an update every 2 months, and Arduino Modules Pro every 2 months. Most recently, Circuit Simulator was updated on November 8, 2026 and Arduino Modules Pro on November 10, 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.*