# Nuclear Wallet Cards vs Physics Constants Library

The clearest difference is in-app purchases: Nuclear Wallet Cards at none against Physics Constants Library's 1. Nuclear Wallet Cards also leads on ads (none vs shown) and update cadence (monthly vs every 7 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Physics Constants Library sells 1 one-off in-app purchase. Nuclear Wallet Cards asks for nothing beyond the download.

Nuclear Wallet Cards ships an update monthly, Physics Constants Library every 7 months. Both last shipped on October 30, 2026.

## The numbers

| Metric | Nuclear Wallet Cards | Physics Constants Library |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/nuclear-wallet-cards/id6741994617/reviews)** | — |
| Number of ratings | **3** | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Monthly** | Every 7 months |
| Monetization | Free | — |
| Size | 9 MB | 10 MB |
| Requires iOS | **17.6** | 18.4 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Brookhaven National Laboratory](https://appshunter.io/developer/1796322722) | [ChatStick Company Limited](https://appshunter.io/developer/1165816085) |

## What reviewers say

### Nuclear Wallet Cards

[App page](https://appshunter.io/ios/app/nuclear-wallet-cards/id6741994617)

Access comprehensive nuclear data for every known nuclide in an interactive format. Explore ground and isomeric state properties with powerful search and filtering tools. This authoritative reference is ideal for researchers, educators, and students.

**Highlights:** Comprehensive nuclide data, Powerful search and filter, Interactive periodic table, Authoritative data source, User-friendly interface

**Features:** macOS Compatibility

**In-app purchases:** none


### Physics Constants Library

[App page](https://appshunter.io/ios/app/physics-constants-library/id6751224343)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock All Features | $2.99 | one-time |


## Frequently asked questions

### Is Nuclear Wallet Cards free?

Nuclear Wallet Cards is free to download, with no in-app purchases.

### Is Physics Constants Library free?

Physics Constants Library is free to download, with in-app purchases available.

### Do Nuclear Wallet Cards or Physics Constants Library have ads?

Physics Constants Library shows ads; Nuclear Wallet Cards does not.

### Which is updated more often, Nuclear Wallet Cards or Physics Constants Library?

Nuclear Wallet Cards ships an update monthly, and Physics Constants Library every 7 months. Most recently, Nuclear Wallet Cards was updated on October 30, 2026 and Physics Constants Library on October 30, 2026.

---

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