# OwlNote TLDL Notes Feynman AI vs Nebular

The clearest difference is in-app purchases: Nebular at none against OwlNote TLDL Notes Feynman AI's 3. Nebular also leads on update cadence (weekly vs every 2 months). On price, ads, device support and iOS requirement 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. Nebular asks for nothing beyond the download.

OwlNote TLDL Notes Feynman AI ships an update every 2 months, Nebular weekly. The most recent releases landed on October 28, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | OwlNote TLDL Notes Feynman AI | Nebular |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Weekly** |
| Size | 55 MB | 42 MB |
| Requires iOS | 15.1 | **15** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Olga Krolikowska](https://appshunter.io/developer/1727507942) | [NEBULAR, TOO](https://appshunter.io/developer/1874932722) |

## 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 |


### Nebular

[App page](https://appshunter.io/ios/app/nebular/id6758777730)

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

**In-app purchases:** none


## 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 Nebular free?

Nebular is free to download, with no in-app purchases.

### Do OwlNote TLDL Notes Feynman AI or Nebular have ads?

Neither OwlNote TLDL Notes Feynman AI nor Nebular shows ads.

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

OwlNote TLDL Notes Feynman AI ships an update every 2 months, and Nebular weekly. Most recently, OwlNote TLDL Notes Feynman AI was updated on October 28, 2026 and Nebular on October 25, 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.*