# Chart AI vs Deja

The clearest difference is in-app purchases: Deja at none against Chart AI's 3. Deja also leads on ads (none vs shown) and update cadence (every 4 days vs every 6 weeks). Chart AI's advantage is iOS requirement (13.0 vs 15.0). On price and device support there is nothing between them.

Both are free to download. Chart AI sells 3 in-app purchases, starting at $4.99 per 7 days. Deja asks for nothing beyond the download.

Chart AI ships an update every 6 weeks, Deja every 4 days. The most recent releases landed on September 7, 2026 and September 15, 2026 respectively.

## The numbers

| Metric | Chart AI | Deja |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 6 weeks | **Every 4 days** |
| Size | 58 MB | 73 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Awan Junction](https://appshunter.io/developer/1852839624) | [JUHWAN LEE](https://appshunter.io/developer/1703441721) |

## What reviewers say

### Chart AI

[App page](https://appshunter.io/ios/app/chart-ai-trade-ai-analysis/id6756201987)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Premium | $4.99 | per 7 days |
| Weekly | $4.99 | per 7 days |
| Monthly Premium | $14.99 | per month |


### Deja

[App page](https://appshunter.io/ios/app/deja-chart-pattern-analysis/id6761725119)

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

**In-app purchases:** none


## Frequently asked questions

### Is Chart AI free?

Chart AI is free to download, with in-app purchases available.

### Is Deja free?

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

### Do Chart AI or Deja have ads?

Chart AI shows ads; Deja does not.

### Which is updated more often, Chart AI or Deja?

Chart AI ships an update every 6 weeks, and Deja every 4 days. Most recently, Chart AI was updated on September 7, 2026 and Deja on September 15, 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.*