# Feynman AI vs EEG Recorder

The clearest difference is price: Feynman AI at Free against EEG Recorder's $4.99. Feynman AI also leads on update cadence (every 6 days vs every 3 months). EEG Recorder's advantage is in-app purchases (none vs 7). On ads, device support and iOS requirement there is nothing between them.

Feynman AI is free to download; EEG Recorder costs $4.99 up front. Feynman AI sells 7 in-app purchases, starting at $2.99 per 7 days. EEG Recorder asks for nothing beyond the download.

Feynman AI ships an update every 6 days, EEG Recorder every 3 months. The most recent releases landed on September 29, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Feynman AI | EEG Recorder |
| --- | --- | --- |
| Price | **Free** | $4.99 |
| Rating | **[4.6 (50 ratings)](https://appshunter.io/ios/app/feynman-ai-study-notes-maker/id6738310899/reviews)** | — |
| Number of ratings | **50** | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 6 days** | Every 3 months |
| Monetization | Free with in-app purchases | — |
| Size | 31 MB | 11 MB |
| Requires iOS | 18.6 | **18.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Baris Can Sertkaya](https://appshunter.io/developer/1713137184) | [Olave Krigolson](https://appshunter.io/developer/1476755479) |

## 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 |


### EEG Recorder

[App page](https://appshunter.io/ios/app/eeg-recorder/id6746664124)

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

**In-app purchases:** none


## Frequently asked questions

### Is Feynman AI free?

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

### Is EEG Recorder free?

EEG Recorder costs $4.99, with no in-app purchases.

### Do Feynman AI or EEG Recorder have ads?

Neither Feynman AI nor EEG Recorder shows ads.

### Which is updated more often, Feynman AI or EEG Recorder?

Feynman AI ships an update every 6 days, and EEG Recorder every 3 months. Most recently, Feynman AI was updated on September 29, 2026 and EEG Recorder on October 10, 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.*