# Feynman AI vs Shale

The clearest difference is iOS requirement: Shale at 16.4 against Feynman AI's 18.6. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Feynman AI sells 7 in-app purchases, starting at $2.99 per 7 days and Shale sells 3 in-app purchases, starting at $2.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Feynman AI ships an update every 6 days, Shale every 4 days. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Feynman AI | Shale |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (55 ratings)](https://appshunter.io/ios/app/feynman-ai-study-notes-maker/id6738310899/reviews)** | — |
| Number of ratings | **55** | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 6 days | **Every 4 days** |
| Monetization | Free with in-app purchases | — |
| Size | 31 MB | 59 MB |
| Requires iOS | 18.6 | **16.4** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Baris Can Sertkaya](https://appshunter.io/developer/1713137184) | [Elias Leinonen](https://appshunter.io/developer/1893625652) |

## What reviewers say

### Feynman AI

[App page](https://appshunter.io/ios/app/feynman-ai-study-notes-maker/id6738310899)

This app helps you learn complex topics faster by explaining them in your own words, like teaching a child. It provides AI-powered feedback and allows you to create notes from various sources. Ideal for students and self-learners.

**Highlights:** Learn complex topics faster, AI-powered feedback, Create notes from YouTube, audio, text, images, Explain concepts like teaching a child, Refine understanding through repetition

**Features:** Vision Pro support

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Weekly | $2.99 | per 7 days |
| Premium Weekly | $4.99 | per 7 days |
| Weekly Premium | $6.99 | per 7 days |
| Weekly Premium | $6.99 | per 7 days |
| Premium Monthly | $9.99 | per month |
| Yearly Premium | $39.99 | per year |
| Premium Annual | $39.99 | per year |


### Shale

[App page](https://appshunter.io/ios/app/shale-block-and-study/id6799409520)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Shale Pro Weekly | $2.99 | per 7 days |
| Shale Annual Plan | $34.99 | per year |
| Shale Pro Lifetime | $99.99 | one-time |


## Frequently asked questions

### Is Feynman AI free?

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

### Is Shale free?

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

### Do Feynman AI or Shale have ads?

Neither Feynman AI nor Shale shows ads.

### Which is updated more often, Feynman AI or Shale?

Feynman AI ships an update every 6 days, and Shale every 4 days. Most recently, Feynman AI was updated on October 30, 2026 and Shale 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.*