# Chart AI vs Napkin Dōjō

The clearest difference is in-app purchases: Napkin Dōjō at none against Chart AI's 4. Napkin Dōjō also leads on update cadence (daily vs every 3 weeks) and iOS requirement (13.0 vs 18.0). On price, ads and device support there is nothing between them.

Both are free to download. Chart AI sells 4 in-app purchases, starting at $3.99 per 7 days. Napkin Dōjō asks for nothing beyond the download.

Chart AI ships an update every 3 weeks, Napkin Dōjō daily. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Chart AI | Napkin Dōjō |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (75 ratings)](https://appshunter.io/ios/app/chart-ai/id6636484876/reviews)** | — |
| Number of ratings | **75** | — |
| Positive reviews | 25.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Daily** |
| Monetization | Subscription | — |
| Size | 11 MB | 2 MB |
| Requires iOS | 18.0 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [MATT LYNDON COSTELLO](https://appshunter.io/developer/1762822940) | [Bharat Khandelwal](https://appshunter.io/developer/6782733000) |

## What reviewers say

### Chart AI

[App page](https://appshunter.io/ios/app/chart-ai/id6636484876)

This app uses artificial intelligence to analyze trading charts in seconds. Upload a chart image to get detailed insights on trade ideas, trends, market structure, and indicators. Save your analyses for future reference or to scan more charts.

**Highlights:** AI-powered chart interpretation, Trade idea analysis, Trend and market structure identification, Liquidity zone and order block detection, Indicator analysis, Save and revisit analyses

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlimited Chart Scans | $3.99 | per 7 days |
| Weekly Subscription | $5.99 | per 7 days |
| Monthly Subscription | $14.99 | per month |
| Yearly Subscription | $49.99 | per year |

**What reviewers like**

- 👍 Great for confidence
- 👍 Excellent trading insights
- 👍 Easy to use
- 👍 Accurate results (some users)
- 👍 Helpful for successful trades

**What reviewers complain about**

- ❌ Fake app
- ❌ Not free (misleading trial)
- ❌ No valid entries after payment
- ❌ Random and erroneous signals
- ❌ Subscription issues

**Reported bugs**

- Subscription not working
- App prompts to pay again
- Restore purchases button doesn't work
- Buggy app
- Cannot access app or saved data

**Requested features**

- Add features for day trading
- Option for different time frames


### Napkin Dōjō

[App page](https://appshunter.io/ios/app/napkin-dojo/id6782732998)

**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 Napkin Dōjō free?

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

### Do Chart AI or Napkin Dōjō have ads?

Neither Chart AI nor Napkin Dōjō shows ads.

### Which is updated more often, Chart AI or Napkin Dōjō?

Chart AI ships an update every 3 weeks, and Napkin Dōjō daily. Most recently, Chart AI was updated on October 24, 2026 and Napkin Dōjō on October 25, 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.*