# OwlNote TLDL Notes Feynman AI vs Zone In

The clearest difference is update cadence: Zone In at weekly against OwlNote TLDL Notes Feynman AI's every 2 months. OwlNote TLDL Notes Feynman AI's advantage is iOS requirement (15.1 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. OwlNote TLDL Notes Feynman AI sells 3 in-app purchases, starting at $3.99 per 7 days and Zone In sells 3 in-app purchases, starting at $6.99 per 7 days. Whichever you choose, the download price is not the number that matters.

OwlNote TLDL Notes Feynman AI ships an update every 2 months, Zone In weekly. The most recent releases landed on September 20, 2026 and September 7, 2026 respectively.

## The numbers

| Metric | OwlNote TLDL Notes Feynman AI | Zone In |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Weekly** |
| Size | 55 MB | 18 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Olga Krolikowska](https://appshunter.io/developer/1727507942) | [Bilal Abdinoor](https://appshunter.io/developer/1832796903) |

## What reviewers say

### OwlNote TLDL Notes Feynman AI

[App page](https://appshunter.io/ios/app/owlnote-tldl-notes-feynman-ai/id6746122376)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $3.99 | per 7 days |
| Monthly | $7.99 | per month |
| Yearly | $24.99 | per year |


### Zone In

[App page](https://appshunter.io/ios/app/zone-in-notesfeynmanquiz/id6757115360)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Zone In Pro (Weekly) | $6.99 | per 7 days |
| Zone In Pro (Monthly) | $17.99 | per month |
| Zone In Pro (Yearly) | $59.99 | per year |


## Frequently asked questions

### Is OwlNote TLDL Notes Feynman AI free?

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

### Is Zone In free?

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

### Do OwlNote TLDL Notes Feynman AI or Zone In have ads?

Neither OwlNote TLDL Notes Feynman AI nor Zone In shows ads.

### Which is updated more often, OwlNote TLDL Notes Feynman AI or Zone In?

OwlNote TLDL Notes Feynman AI ships an update every 2 months, and Zone In weekly. Most recently, OwlNote TLDL Notes Feynman AI was updated on September 20, 2026 and Zone In on September 7, 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.*