# ChemitAI vs Circuit Design

The clearest difference is update cadence: ChemitAI at every 2 days against Circuit Design's every 2 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. ChemitAI sells 3 in-app purchases, starting at $5.99 per 7 days 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.

ChemitAI ships an update every 2 days, Circuit Design every 2 months. The most recent releases landed on October 31, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | ChemitAI | Circuit Design |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 2 days** | Every 2 months |
| Size | 81 MB | 5 MB |
| Requires iOS | 17.6 | **17.0** |
| Devices | **iPhone, iPad, Mac** | iPhone, iPad |
| Age rating | 12+ | 4+ |
| Developer | [Hanzell Pereira](https://appshunter.io/developer/1825650436) | [Tu Anh Do](https://appshunter.io/developer/738947045) |

## What reviewers say

### ChemitAI

[App page](https://appshunter.io/ios/app/chemitai/id6764376369)

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Chemitai Cloud AI Weekly | $5.99 | per 7 days |
| Chemitai Cloud AI Monthly | $8.99 | per month |
| Chemitai Pro Lifetime | $3.99 | 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 ChemitAI free?

ChemitAI 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 ChemitAI or Circuit Design have ads?

Neither ChemitAI nor Circuit Design shows ads.

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

ChemitAI ships an update every 2 days, and Circuit Design every 2 months. Most recently, ChemitAI was updated on October 31, 2026 and Circuit Design on October 28, 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.*