# Circuit Design vs Voltio

The clearest difference is in-app purchases: Voltio at none against Circuit Design's 3. Voltio also leads on update cadence (every 2 days vs every 2 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Circuit Design sells 3 in-app purchases, starting at $7.99 per month. Voltio asks for nothing beyond the download.

Circuit Design ships an update every 2 months, Voltio every 2 days. Both last shipped on October 31, 2026.

## The numbers

| Metric | Circuit Design | Voltio |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 2 days** |
| Size | 5 MB | 5 MB |
| Requires iOS | 17.0 | **16.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Tu Anh Do](https://appshunter.io/developer/738947045) | [Nikoloz Kolbaia](https://appshunter.io/developer/1896750824) |

## What reviewers say

### 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 |


### Voltio

[App page](https://appshunter.io/ios/app/voltio-electrician-sim/id6778076030)

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

**In-app purchases:** none


## Frequently asked questions

### Is Circuit Design free?

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

### Is Voltio free?

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

### Do Circuit Design or Voltio have ads?

Neither Circuit Design nor Voltio shows ads.

### Which is updated more often, Circuit Design or Voltio?

Circuit Design ships an update every 2 months, and Voltio every 2 days. Most recently, Circuit Design was updated on October 31, 2026 and Voltio on October 31, 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.*