# Kmap vs Circuit Simulator

The clearest difference is in-app purchases: Kmap at none against Circuit Simulator's 8. Kmap also leads on review sentiment (100% vs 77%) and rating (5.0 vs 4.7). Circuit Simulator's advantage is update cadence (every 6 weeks vs every 128 months) and ratings volume (87 vs 5). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Circuit Simulator sells 8 in-app purchases, starting at $0.99 per month. Kmap asks for nothing beyond the download.

Kmap holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Circuit Simulator has 87 ratings behind it against 5, so its average is the more settled of the two. Written reviews point the same way: 100% of Kmap's written reviews are positive against 77% of Circuit Simulator's.

Kmap ships an update every 128 months, Circuit Simulator every 6 weeks. The most recent releases landed on October 4, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | Kmap | Circuit Simulator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (5 ratings)](https://appshunter.io/ios/app/kmap/id1033942468/reviews)** | [4.7 (87 ratings)](https://appshunter.io/ios/app/circuit-simulator-voltsim/id6736870364/reviews) |
| Number of ratings | 5 | **87** |
| Positive reviews | **100.0% of reviews** | 76.9% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 128 months | **Every 6 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 30 MB | 103 MB |
| Requires iOS | **15.1** | 15.3 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Richard Michalka](https://appshunter.io/developer/1033942467) | [Sindhu Gopi](https://appshunter.io/developer/1773585161) |

## What reviewers say

### Kmap

[App page](https://appshunter.io/ios/app/kmap/id1033942468)

Simplify Boolean expressions and create Karnaugh maps for up to six variables. Offers both Sum of Products and Product of Sums, with support for 'don't-care' conditions and step-by-step solution viewing. Ideal for students and engineers in digital logic and computer engineering.

**Highlights:** Karnaugh map creation (2-6 variables), Automatic Boolean minimization, Sum of Products (SOP) and Product of Sums (POS), Don't-care (X) support, Truth table input, Color-coded grouping overlays, Step-by-step solution view

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

**In-app purchases:** none


### 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 circuit behavior with tools like oscilloscopes and multimeters. Offers a user-friendly experience for circuit design and digital electronic analysis.

**Highlights:** Real-time electronic circuit simulation, Digital circuit simulation, Voltage and current analysis, Multichannel oscilloscope, Multimeter tools, Circuit design and tuning

**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 |


## Frequently asked questions

### Is Kmap free?

Kmap is free to download, with no in-app purchases.

### Is Circuit Simulator free?

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

### Which has better reviews, Kmap or Circuit Simulator?

Kmap is rated higher. Kmap averages 5.0 out of 5 from 5 ratings, while Circuit Simulator averages 4.7 from 87 ratings.

### Do Kmap or Circuit Simulator have ads?

Neither Kmap nor Circuit Simulator shows ads.

### Which is updated more often, Kmap or Circuit Simulator?

Kmap ships an update every 128 months, and Circuit Simulator every 6 weeks. Most recently, Kmap was updated on October 4, 2026 and Circuit Simulator on October 16, 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.*