# Feynman AI vs Einstein AI

Feynman AI and Einstein AI are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Feynman AI sells 3 in-app purchases, starting at $9.99 per 7 days and Einstein AI sells 2 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Both ship on a similar rhythm, roughly every 2 weeks. The most recent releases landed on September 16, 2026 and July 6, 2026 respectively.

## The numbers

| Metric | Feynman AI | Einstein AI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.8 (21 ratings)](https://appshunter.io/ios/app/einstein-ai-learn-and-memorize/id6741355940/reviews)** |
| Number of ratings | — | **21** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | Every 2 weeks |
| Monetization | — | Subscription |
| Size | 11 MB | 31 MB |
| Requires iOS | 16.6 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 9+ |
| Developer | [alperen bigin](https://appshunter.io/developer/1744725749) | [A. Furkan Suren](https://appshunter.io/developer/1723613226) |

## What reviewers say

### Feynman AI

[App page](https://appshunter.io/ios/app/feynman-ai-study-and-learn/id6740183798)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $9.99 | per 7 days |
| monthly | $14.99 | per month |
| yearly | $99.99 | per year |


### Einstein AI

[App page](https://appshunter.io/ios/app/einstein-ai-learn-and-memorize/id6741355940)

This app uses AI to generate structured study content and quizzes on any topic. It provides instant feedback and detailed explanations to help users learn faster and improve retention.

**Highlights:** AI-generated study content, Instant quizzes, Detailed feedback and corrections, Learn any topic, Boost knowledge retention, Structured learning format

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Pro | $4.99 | per 7 days |
| Yearly Pro | $39.99 | per year |


## Frequently asked questions

### Is Feynman AI free?

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

### Is Einstein AI free?

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

### Do Feynman AI or Einstein AI have ads?

Neither Feynman AI nor Einstein AI shows ads.

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

Feynman AI ships an update every 2 weeks, and Einstein AI every 2 weeks. Most recently, Feynman AI was updated on September 16, 2026 and Einstein AI on July 6, 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.*