# Multisim Circuit Explorer vs OS Interview Questions

The clearest difference is rating: Multisim Circuit Explorer at 2.3 against OS Interview Questions's 1.0. Multisim Circuit Explorer also leads on in-app purchases (none vs 1) and ads (none vs shown). OS Interview Questions's advantage is device support (3 vs 1). On price there is nothing between them.

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

Multisim Circuit Explorer holds the better App Store score, 2.3 against 1.0. That said, the two scores are not equally well evidenced: Multisim Circuit Explorer has 8 ratings behind it against 1, so its average is the more settled of the two.

Multisim Circuit Explorer ships an update every 10 months, OS Interview Questions every 95 months. The most recent releases landed on October 15, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Multisim Circuit Explorer | OS Interview Questions |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.3 (8 ratings)](https://appshunter.io/ios/app/multisim-circuit-explorer/id502586865/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/os-interview-questions/id1070986818/reviews) |
| Number of ratings | **8** | 1 |
| Positive reviews | 25.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 10 months** | Every 95 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 1 MB | 16 MB |
| Requires iOS | **4.2** | 14.0 |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [National Instruments](https://appshunter.io/developer/432100099) | [RAVINDHIRAN SUMITHRA](https://appshunter.io/developer/1571016391) |

## 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


### OS Interview Questions

[App page](https://appshunter.io/ios/app/os-interview-questions/id1070986818)

Learn fundamental operating system concepts and interview questions with this educational app. It offers a user-friendly interface to explore topics, save favorites, and customize your reading experience. Sharpen your technical knowledge for career advancement.

**Highlights:** Operating system overview, Functions of operating systems, Types of operating systems, Embedded OS interview questions, User-friendly interface, Personalized library for favorites, Customizable themes and fonts

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| OS Interview Questions | $3.99 | one-time |


## Frequently asked questions

### Is Multisim Circuit Explorer free?

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

### Is OS Interview Questions free?

OS Interview Questions is free to download, with in-app purchases available.

### Which has better reviews, Multisim Circuit Explorer or OS Interview Questions?

Multisim Circuit Explorer is rated higher. Multisim Circuit Explorer averages 2.3 out of 5 from 8 ratings, while OS Interview Questions averages 1.0 from 1 ratings.

### Do Multisim Circuit Explorer or OS Interview Questions have ads?

OS Interview Questions shows ads; Multisim Circuit Explorer does not.

### Which is updated more often, Multisim Circuit Explorer or OS Interview Questions?

Multisim Circuit Explorer ships an update every 10 months, and OS Interview Questions every 95 months. Most recently, Multisim Circuit Explorer was updated on October 15, 2026 and OS Interview Questions on October 12, 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.*