# LogicalArt Digital Circuit Sim vs Three

The clearest difference is price: LogicalArt Digital Circuit Sim at Free against Three's $0.99. LogicalArt Digital Circuit Sim also leads on rating (4.0 vs 2.0). Three's advantage is in-app purchases (none vs 1) and update cadence (weekly vs every 2 weeks). On review sentiment, ratings volume, ads and monetization model there is nothing between them.

LogicalArt Digital Circuit Sim is free to download; Three costs $0.99 up front. LogicalArt Digital Circuit Sim sells 1 one-off in-app purchase. Three asks for nothing beyond the download.

LogicalArt Digital Circuit Sim holds the better App Store score, 4.0 against 2.0. Both are backed by a comparable volume of ratings — 4 and 4 respectively. Written reviews split almost evenly too, at 50% and 50% positive.

LogicalArt Digital Circuit Sim ships an update every 2 weeks, Three weekly. The most recent releases landed on October 18, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | LogicalArt Digital Circuit Sim | Three |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | **[4.0 (4 ratings)](https://appshunter.io/ios/app/logicalart-digital-circuit-sim/id1536767149/reviews)** | [2.0 (4 ratings)](https://appshunter.io/ios/app/three-body-simulator/id6446972716/reviews) |
| Number of ratings | 4 | 4 |
| Positive reviews | 50.0% of reviews | 50.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Weekly** |
| Monetization | Paid | Paid |
| Size | 13 MB | 72 MB |
| Requires iOS | 17.6 | **12.0** |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [CrazyLazy OU](https://appshunter.io/developer/1488751385) | [骐显 梁](https://appshunter.io/developer/1314814852) |

## What reviewers say

### LogicalArt Digital Circuit Sim

[App page](https://appshunter.io/ios/app/logicalart-digital-circuit-sim/id1536767149)

Build and analyze digital logic circuits interactively. Design complex systems from basic gates to complete processors without physical hardware. Share your creations and deepen your understanding of computer architecture.

**Highlights:** Interactive logic gate simulation, Build complex circuits from basic gates, Design processors and computer systems, Frequency generator and number display, Schematic diagram export, Package designs as chips, Share circuit designs

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Access | $9.99 | one-time |


### Three

[App page](https://appshunter.io/ios/app/three-body-simulator/id6446972716)

Explore celestial mechanics by simulating gravitational interactions between multiple celestial bodies. Users can add up to seven suns and an asteroid matrix to observe complex orbital behaviors and gravitational slingshot effects. The app allows for adjustments to gravity parameters for demonstration purposes.

**Highlights:** Multi-body gravitational simulation, Add up to 7 suns, Asteroid matrix simulation, Observe gravitational slingshots, Adjustable gravity parameters for demonstration, Enlarged volumes for better observation

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is LogicalArt Digital Circuit Sim free?

LogicalArt Digital Circuit Sim is free to download, with in-app purchases available.

### Is Three free?

Three costs $0.99, with no in-app purchases.

### Which has better reviews, LogicalArt Digital Circuit Sim or Three?

LogicalArt Digital Circuit Sim is rated higher. LogicalArt Digital Circuit Sim averages 4.0 out of 5 from 4 ratings, while Three averages 2.0 from 4 ratings.

### Do LogicalArt Digital Circuit Sim or Three have ads?

Neither LogicalArt Digital Circuit Sim nor Three shows ads.

### Which is updated more often, LogicalArt Digital Circuit Sim or Three?

LogicalArt Digital Circuit Sim ships an update every 2 weeks, and Three weekly. Most recently, LogicalArt Digital Circuit Sim was updated on October 18, 2026 and Three on October 24, 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.*