# Note, Feynman | Briefly AI vs Einstein Study AI Coach

The clearest difference is update cadence: Einstein Study AI Coach at every 3 days against Note, Feynman | Briefly AI's every 8 days. Note, Feynman | Briefly AI's advantage is device support (3 vs 1) and iOS requirement (14.0 vs 17.0). On price, ads and in-app purchases there is nothing between them.

Both are free to download. Note, Feynman | Briefly AI sells 4 in-app purchases, starting at $8.99 per 7 days and Einstein Study AI Coach sells 2 in-app purchases, starting at $5.99 per month. Whichever you choose, the download price is not the number that matters.

Note, Feynman | Briefly AI ships an update every 8 days, Einstein Study AI Coach every 3 days. The most recent releases landed on October 5, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | Note, Feynman | Briefly AI | Einstein Study AI Coach |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/note-feynman-briefly-ai/id6745227334/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 8 days | **Every 3 days** |
| Monetization | Subscription | — |
| Size | 84 MB | 18 MB |
| Requires iOS | **14.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Saqer Alshukaili](https://appshunter.io/developer/1773147914) | [Daniel Plata](https://appshunter.io/developer/1467546479) |

## What reviewers say

### Note, Feynman | Briefly AI

[App page](https://appshunter.io/ios/app/note-feynman-briefly-ai/id6745227334)

Transform information into organized knowledge for faster learning. Import content from various sources, generate AI summaries, create flashcards, and visualize concepts with mind maps. Engage with AI chat and a unique Feynman test mode to deepen understanding.

**Highlights:** One-tap content import, AI summaries and key points, Spaced repetition flashcards, Interactive mind maps, Feynman Test Mode, Contextual AI chat, Cross-device sync

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Briefly AI weekly pro access | $8.99 | per 7 days |
| Briefly AI monthly Pro access | $17.99 | per month |
| Yearly Pro Accesss Promo | $49.99 | per year |
| Briefly AI yearly pro access | $89.99 | per year |


### Einstein Study AI Coach

[App page](https://appshunter.io/ios/app/einstein-study-ai-coach/id6754023929)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium monthly | $5.99 | per month |
| Premium annual | $19.99 | per year |


## Frequently asked questions

### Is Note, Feynman | Briefly AI free?

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

### Is Einstein Study AI Coach free?

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

### Do Note, Feynman | Briefly AI or Einstein Study AI Coach have ads?

Neither Note, Feynman | Briefly AI nor Einstein Study AI Coach shows ads.

### Which is updated more often, Note, Feynman | Briefly AI or Einstein Study AI Coach?

Note, Feynman | Briefly AI ships an update every 8 days, and Einstein Study AI Coach every 3 days. Most recently, Note, Feynman | Briefly AI was updated on October 5, 2026 and Einstein Study AI Coach on October 17, 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.*