# JS vs Smart Material Calculator

The clearest difference is in-app purchases: JS at none against Smart Material Calculator's 1. Smart Material Calculator's advantage is iOS requirement (13.0 vs 26.0). On price, ads and device support there is nothing between them.

Both are free to download. Smart Material Calculator sells 1 one-off in-app purchase. JS asks for nothing beyond the download.

## The numbers

| Metric | JS | Smart Material Calculator |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 weeks | — |
| Size | 17 MB | 61 MB |
| Requires iOS | 26.0 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | +4 |
| Developer | [JS-METALS SP. Z O.O.](https://appshunter.io/developer/1814799225) | [Sachinbhai Surani](https://appshunter.io/developer/1838685550) |

## What reviewers say

### JS

[App page](https://appshunter.io/ios/app/js-metals/id6746038055)

**Features:** macOS Compatibility

**In-app purchases:** none


### Smart Material Calculator

[App page](https://appshunter.io/ios/app/smart-material-calculator/id6773222839)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime premium | $12.99 | one-time |


## Frequently asked questions

### Is JS free?

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

### Is Smart Material Calculator free?

Smart Material Calculator is free to download, with in-app purchases available.

### Do JS or Smart Material Calculator have ads?

Neither JS nor Smart Material Calculator 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.*