# Feynman AI vs HITsa Study Buddy

The clearest difference is in-app purchases: HITsa Study Buddy at none against Feynman AI's 7. HITsa Study Buddy also leads on iOS requirement (15.1 vs 18.6). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Feynman AI sells 7 in-app purchases, starting at $2.99 per 7 days. HITsa Study Buddy asks for nothing beyond the download.

Feynman AI ships an update every 6 days, HITsa Study Buddy every 9 days. The most recent releases landed on September 29, 2026 and September 16, 2026 respectively.

## The numbers

| Metric | Feynman AI | HITsa Study Buddy |
| --- | --- | --- |
| Price | Free | Free |
| 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 9 days |
| Monetization | Free with in-app purchases | — |
| Size | 31 MB | 42 MB |
| Requires iOS | 18.6 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [Baris Can Sertkaya](https://appshunter.io/developer/1713137184) | [HITsa Training and Employment](https://appshunter.io/developer/1868321412) |

## 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 |


### HITsa Study Buddy

[App page](https://appshunter.io/ios/app/hitsa-study-buddy/id6757692967)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Feynman AI free?

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

### Is HITsa Study Buddy free?

HITsa Study Buddy is free to download, with no in-app purchases.

### Do Feynman AI or HITsa Study Buddy have ads?

Neither Feynman AI nor HITsa Study Buddy shows ads.

### Which is updated more often, Feynman AI or HITsa Study Buddy?

Feynman AI ships an update every 6 days, and HITsa Study Buddy every 9 days. Most recently, Feynman AI was updated on September 29, 2026 and HITsa Study Buddy on September 16, 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.*