# Elastic Constants Calculator vs Physics Constants Library

The clearest difference is in-app purchases: Elastic Constants Calculator at none against Physics Constants Library's 1. Elastic Constants Calculator also leads on iOS requirement (16.0 vs 18.4). On price, ads and device support there is nothing between them.

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

## The numbers

| Metric | Elastic Constants Calculator | Physics Constants Library |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | — | Every 7 months |
| Size | 10 MB | 10 MB |
| Requires iOS | **16.0** | 18.4 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [APPS BAY LIMITED](https://appshunter.io/developer/1599035519) | [ChatStick Company Limited](https://appshunter.io/developer/1165816085) |

## What reviewers say

### Elastic Constants Calculator

[App page](https://appshunter.io/ios/app/elastic-constants-calculator/id6478935452)

**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 Elastic Constants Calculator free?

Elastic Constants Calculator 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 Elastic Constants Calculator or Physics Constants Library have ads?

Both Elastic Constants Calculator and Physics Constants Library show 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.*