# Smart Logic Simulator vs Circuit Design

The clearest difference is iOS requirement: Smart Logic Simulator at 15.3 against Circuit Design's 17.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Smart Logic Simulator sells 1 one-off in-app purchase and Circuit Design sells 3 in-app purchases, starting at $7.99 per month. Whichever you choose, the download price is not the number that matters.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on September 24, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | Smart Logic Simulator | Circuit Design |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (2 ratings)](https://appshunter.io/ios/app/smart-logic-simulator/id6742043778/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | Free | — |
| Size | 59 MB | 5 MB |
| Requires iOS | **15.3** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Tomasz Czart](https://appshunter.io/developer/1796528140) | [Tu Anh Do](https://appshunter.io/developer/738947045) |

## What reviewers say

### Smart Logic Simulator

[App page](https://appshunter.io/ios/app/smart-logic-simulator/id6742043778)

Design and simulate digital circuits using a drag-and-drop interface. Experiment with various logic gates, flip-flops, and arithmetic circuits to build complex systems. Ideal for students and hobbyists interested in electronics.

**Highlights:** Drag-and-drop circuit design, Logic gate simulation, Integrated circuit design, Flip-flops and latches, Multiplexers and demultiplexers, Arithmetic circuit design

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| One-time fee | $29.99 | one-time |


### Circuit Design

[App page](https://appshunter.io/ios/app/circuit-design/id6776538242)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Circuit Design Premium Monthly | $7.99 | per month |
| Circuit Design Premium Yearly | $29.99 | per year |
| Circuit Design Premium Lifetime | $39.99 | one-time |


## Frequently asked questions

### Is Smart Logic Simulator free?

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

### Is Circuit Design free?

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

### Do Smart Logic Simulator or Circuit Design have ads?

Neither Smart Logic Simulator nor Circuit Design shows ads.

### Which is updated more often, Smart Logic Simulator or Circuit Design?

Smart Logic Simulator ships an update every 2 months, and Circuit Design every 2 months. Most recently, Smart Logic Simulator was updated on September 24, 2026 and Circuit Design on October 5, 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.*