# The Periodic Table HD vs AngularQM

The clearest difference is price: The Periodic Table HD at Free against AngularQM's $4.99. The Periodic Table HD also leads on update cadence (every 3 months vs every 49 months) and ratings volume (25 vs 1). AngularQM's advantage is rating (5.0 vs 3.6) and ads (none vs shown). On in-app purchases and device support there is nothing between them.

The Periodic Table HD is free to download; AngularQM costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

AngularQM holds the better App Store score, 5.0 against 3.6. That said, the two scores are not equally well evidenced: The Periodic Table HD has 25 ratings behind it against 1, so its average is the more settled of the two.

The Periodic Table HD ships an update every 3 months, AngularQM every 49 months. The most recent releases landed on September 8, 2026 and July 4, 2026 respectively.

## The numbers

| Metric | The Periodic Table HD | AngularQM |
| --- | --- | --- |
| Price | **Free** | $4.99 |
| Rating | [3.6 (25 ratings)](https://appshunter.io/ios/app/the-periodic-table-hd/id430707246/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/angularqm/id1319354337/reviews)** |
| Number of ratings | **25** | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 3 months** | Every 49 months |
| Monetization | **Ad-supported** | Paid |
| Size | 6 MB | 5 MB |
| Requires iOS | **13.0** | 26.4 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [John Rouda](https://appshunter.io/developer/396597129) | [Gabriel Raffa](https://appshunter.io/developer/991109488) |

## What reviewers say

### The Periodic Table HD

[App page](https://appshunter.io/ios/app/the-periodic-table-hd/id430707246)

Explore a color-coded periodic table with detailed information on each element. Access data like atomic number, density, and electronic configuration. This educational tool is available for free.

**Highlights:** Color-coded periodic table, Element details (name, density, etc.), Atomic number, Melting point, Electronic configuration, Free to use

**Features:** macOS Compatibility

**In-app purchases:** none


### AngularQM

[App page](https://appshunter.io/ios/app/angularqm/id1319354337)

This app helps quantum mechanics physicists quickly obtain matrix representations of angular momentum operators. It calculates matrices for J squared, the z component of J, and ladder operators for chosen total angular momentum values.

**Highlights:** Matrix representation of angular momentum operators, Calculates J squared matrices, Calculates Jz component matrices, Calculates ladder operator matrices (J+, J-), Supports various total angular momentum values (j), Visualizes matrix representations

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is The Periodic Table HD free?

The Periodic Table HD is free to download, with no in-app purchases.

### Is AngularQM free?

AngularQM costs $4.99, with no in-app purchases.

### Which has better reviews, The Periodic Table HD or AngularQM?

AngularQM is rated higher. The Periodic Table HD averages 3.6 out of 5 from 25 ratings, while AngularQM averages 5.0 from 1 ratings.

### Do The Periodic Table HD or AngularQM have ads?

The Periodic Table HD shows ads; AngularQM does not.

### Which is updated more often, The Periodic Table HD or AngularQM?

The Periodic Table HD ships an update every 3 months, and AngularQM every 49 months. Most recently, The Periodic Table HD was updated on September 8, 2026 and AngularQM on July 4, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*