# NBR E vs Quantum Atlas

The clearest difference is rating: Quantum Atlas at 5.0 against NBR E's 4.5. NBR E's advantage is in-app purchases (none vs 1). On price, ratings volume, ads and monetization model there is nothing between them.

Both are free to download. Quantum Atlas sells 1 one-off in-app purchase. NBR E asks for nothing beyond the download.

Quantum Atlas holds the better App Store score, 5.0 against 4.5. Both are backed by a comparable volume of ratings — 2 and 1 respectively.

## The numbers

| Metric | NBR E | Quantum Atlas |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.5 (2 ratings)](https://appshunter.io/ios/app/nbr-e-library/id1588680132/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/quantum-atlas/id6771914560/reviews)** |
| Number of ratings | **2** | 1 |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | — |
| Monetization | Free | Free |
| Size | 71 MB | 37 MB |
| Requires iOS | 16.0 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Odilo](https://appshunter.io/developer/976580041) | [Elisha Perelman](https://appshunter.io/developer/6771914562) |

## What reviewers say

### NBR E

[App page](https://appshunter.io/ios/app/nbr-e-library/id1588680132)

Access a vast collection of digital content including ebooks, audiobooks, podcasts, videos, and courses in various formats, themes, and languages. Personalize your learning journey based on your tastes and preferences.

**Highlights:** Thousands of digital content items, Multiple formats: ebooks, audiobooks, podcasts, videos, courses, magazines, Diverse themes and languages, Personalized reading experience, Create your own learning experience

**In-app purchases:** none


### Quantum Atlas

[App page](https://appshunter.io/ios/app/quantum-atlas/id6771914560)

Explore the fundamental building blocks of reality with interactive simulations and clear explanations of quantum physics concepts. This pocket-sized reference makes complex theories accessible through a particle table, concept cards, and hands-on experiments.

**Highlights:** Interactive particle table, 12 concept cards for quick learning, 22 touchable physics simulations, Theory atlases for deeper understanding, Decay and Spectra explorers, Offline and private usage

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Quantum Atlas Pro | $2.99 | one-time |


## Frequently asked questions

### Is NBR E free?

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

### Is Quantum Atlas free?

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

### Which has better reviews, NBR E or Quantum Atlas?

Quantum Atlas is rated higher. NBR E averages 4.5 out of 5 from 2 ratings, while Quantum Atlas averages 5.0 from 1 ratings.

### Do NBR E or Quantum Atlas have ads?

Neither NBR E nor Quantum Atlas shows ads.

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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.*