# Feynman AI vs Notelyn

The clearest difference is review sentiment: Feynman AI at 75% against Notelyn's 0%. Notelyn's advantage is rating (5.0 vs 4.4) and ads (none vs shown). On price, ratings volume, in-app purchases and monetization model there is nothing between them.

Both are free to download. Feynman AI sells 5 in-app purchases, starting at $4.99 per 7 days and Notelyn sells 8 in-app purchases, starting at $3.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Notelyn holds the better App Store score, 5.0 against 4.4. Both are backed by a comparable volume of ratings — 15 and 7 respectively. Written reviews complicate that: 75% of Feynman AI's written reviews are positive against 0% of Notelyn's, so the app with the better star average is not the one people write more warmly about.

Feynman AI ships an update monthly, Notelyn fortnightly. The most recent releases landed on October 24, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | Feynman AI | Notelyn |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.4 (15 ratings)](https://appshunter.io/ios/app/feynman-ai-explain-to-learn/id6738237030/reviews) | **[5.0 (7 ratings)](https://appshunter.io/ios/app/notelyn-ai-lecture-note-taker/id6747017579/reviews)** |
| Number of ratings | **15** | 7 |
| Positive reviews | **75.0% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Monthly | **Fortnightly** |
| Monetization | Free with in-app purchases | Freemium |
| Size | 76 MB | 105 MB |
| Requires iOS | 15.6 | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Geekclo Co., Ltd.](https://appshunter.io/developer/1481561066) | [Study AI](https://appshunter.io/developer/1819415812) |

## What reviewers say

### Feynman AI

[App page](https://appshunter.io/ios/app/feynman-ai-explain-to-learn/id6738237030)

Master complex subjects by explaining them yourself and receive AI feedback to improve understanding and retention. Ideal for students, self-learners, and professionals seeking deeper knowledge.

**Highlights:** Practice explaining concepts, Real-time AI feedback and clarity scoring, Track learning progress over time, Build lasting mastery with active recall, Homework and study helper, Flashcards for memorization

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Feynman Learn - Weekly Plan | $4.99 | per 7 days |
| Feynman Learn - Monthly Plan | $9.99 | per month |
| Feynman Learn - Quarterly Plan | $29.99 | per 3 months |
| Feynman Learn - Annual Plan | $49.99 | per year |
| Feynman Learn - Annual Plan | $59.99 | per year |


### Notelyn

[App page](https://appshunter.io/ios/app/notelyn-ai-lecture-note-taker/id6747017579)

Transform lectures and imported content into organized notes, flashcards, and summaries. Features include AI-powered transcription, question generation with citations, and spaced repetition for effective learning. Supports various import formats and cross-device synchronization.

**Highlights:** AI transcription and summarization, Flashcard and quiz generation, Spaced repetition learning, Speaker separation and language detection, Import audio, video, PDFs, and web links, Mind map creation, Cross-device cloud sync

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

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| AI Note Taker Pro - Weekly | $3.99 | per 7 days |
| AI Note Taker Pro - Monthly | $12.99 | per month |
| AI Note Taker Pro - Annual | $59.99 | per year |
| AI Note Taker Pro - Yearly | $79.99 | per year |
| 250 Credits · Starter | $5.99 | one-time |
| 750 Credits · Plus | $14.99 | one-time |
| 1,800 Credits · Pro | $29.99 | one-time |
| 5,000 Credits · Mega | $69.99 | one-time |


## Frequently asked questions

### Is Feynman AI free?

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

### Is Notelyn free?

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

### Which has better reviews, Feynman AI or Notelyn?

Notelyn is rated higher. Feynman AI averages 4.4 out of 5 from 15 ratings, while Notelyn averages 5.0 from 7 ratings.

### Do Feynman AI or Notelyn have ads?

Feynman AI shows ads; Notelyn does not.

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

Feynman AI ships an update monthly, and Notelyn fortnightly. Most recently, Feynman AI was updated on October 24, 2026 and Notelyn on October 2, 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.*