# Multisim Circuit Explorer vs Opamp tools

The clearest difference is in-app purchases: Multisim Circuit Explorer at none against Opamp tools's 1. Multisim Circuit Explorer also leads on iOS requirement (4.2 vs 12.0). Opamp tools's advantage is device support (3 vs 1). On price, update cadence and ads there is nothing between them.

Both are free to download. Opamp tools sells 1 one-off in-app purchase. Multisim Circuit Explorer asks for nothing beyond the download.

Multisim Circuit Explorer ships an update every 10 months, Opamp tools every 12 months. The most recent releases landed on October 15, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Multisim Circuit Explorer | Opamp tools |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.3 (8 ratings)](https://appshunter.io/ios/app/multisim-circuit-explorer/id502586865/reviews)** | — |
| Number of ratings | **8** | — |
| Positive reviews | 25.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 10 months** | Every 12 months |
| Monetization | Free | — |
| Size | 1 MB | 4 MB |
| Requires iOS | **4.2** | 12.0 |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [National Instruments](https://appshunter.io/developer/432100099) | [Siu Yuen Ho](https://appshunter.io/developer/814088527) |

## What reviewers say

### Multisim Circuit Explorer

[App page](https://appshunter.io/ios/app/multisim-circuit-explorer/id502586865)

Explore and understand 18 common electronic circuits, including Ohm's law and operational amplifiers. This companion app allows immediate observation of parameter changes on circuit behavior. It's designed for students learning fundamental circuit theory.

**Highlights:** Explore 18 common electronic circuits, Observe immediate parameter effect, Learn Ohm's law, Understand voltage and current dividers, Study RC/RL filters and step response, Explore operational amplifiers

**Features:** macOS Compatibility

**In-app purchases:** none


### Opamp tools

[App page](https://appshunter.io/ios/app/opamp-tools/id1616271826)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock pro feature | $1.99 | one-time |


## Frequently asked questions

### Is Multisim Circuit Explorer free?

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

### Is Opamp tools free?

Opamp tools is free to download, with in-app purchases available.

### Do Multisim Circuit Explorer or Opamp tools have ads?

Neither Multisim Circuit Explorer nor Opamp tools shows ads.

### Which is updated more often, Multisim Circuit Explorer or Opamp tools?

Multisim Circuit Explorer ships an update every 10 months, and Opamp tools every 12 months. Most recently, Multisim Circuit Explorer was updated on October 15, 2026 and Opamp tools on October 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.*