# Logic Circuit Simulator vs Cairn Maps

The clearest difference is price: Cairn Maps at Free against Logic Circuit Simulator's $2.99. Cairn Maps also leads on update cadence (every 6 days vs every 6 months). Logic Circuit Simulator's advantage is device support (3 vs 1) and iOS requirement (12.0 vs 18.2). On ads and in-app purchases there is nothing between them.

Cairn Maps is free to download; Logic Circuit Simulator costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Logic Circuit Simulator ships an update every 6 months, Cairn Maps every 6 days. The most recent releases landed on October 21, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Logic Circuit Simulator | Cairn Maps |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | **[3.4 (46 ratings)](https://appshunter.io/ios/app/logic-circuit-simulator/id1554116346/reviews)** | — |
| Number of ratings | **46** | — |
| Positive reviews | 19.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 6 days** |
| Monetization | Free | — |
| Size | 106 MB | 15 MB |
| Requires iOS | **12.0** | 18.2 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Ali Mert TUFEKCI](https://appshunter.io/developer/1483311309) | [YMMV](https://appshunter.io/developer/1224453829) |

## What reviewers say

### Logic Circuit Simulator

[App page](https://appshunter.io/ios/app/logic-circuit-simulator/id1554116346)

Design and test digital logic circuits with a comprehensive mobile simulator. Offers a wide range of logic gates, flip-flops, and display components for educational and professional use.

**Highlights:** Logic gate simulation, Flip-flop simulation, Display components, Circuit design, Component library

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

**In-app purchases:** none


### Cairn Maps

[App page](https://appshunter.io/ios/app/cairn-maps/id6756520443)

**In-app purchases:** none


## Frequently asked questions

### Is Logic Circuit Simulator free?

Logic Circuit Simulator costs $2.99, with no in-app purchases.

### Is Cairn Maps free?

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

### Do Logic Circuit Simulator or Cairn Maps have ads?

Neither Logic Circuit Simulator nor Cairn Maps shows ads.

### Which is updated more often, Logic Circuit Simulator or Cairn Maps?

Logic Circuit Simulator ships an update every 6 months, and Cairn Maps every 6 days. Most recently, Logic Circuit Simulator was updated on October 21, 2026 and Cairn Maps on October 14, 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.*