# Diffraction Grating Calculator vs TAR GZ & XZ Extract

The clearest difference is price: TAR GZ & XZ Extract at Free against Diffraction Grating Calculator's $2.99. TAR GZ & XZ Extract also leads on update cadence (every 9 months vs every 29 months). Diffraction Grating Calculator's advantage is ads (none vs shown) and iOS requirement (13 vs 17.0). On in-app purchases and device support there is nothing between them.

TAR GZ & XZ Extract is free to download; Diffraction Grating Calculator costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Diffraction Grating Calculator ships an update every 29 months, TAR GZ & XZ Extract every 9 months. The most recent releases landed on October 15, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Diffraction Grating Calculator | TAR GZ & XZ Extract |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 29 months | **Every 9 months** |
| Monetization | — | Ad-supported |
| Size | 1 MB | 8 MB |
| Requires iOS | **13** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Nitrio](https://appshunter.io/developer/321121189) | [Yevhen Kniaziuk](https://appshunter.io/developer/1251423545) |

## What reviewers say

### Diffraction Grating Calculator

[App page](https://appshunter.io/ios/app/diffraction-grating-calculator/id1413088894)

**Features:** macOS Compatibility

**In-app purchases:** none


### TAR GZ & XZ Extract

[App page](https://appshunter.io/ios/app/tar-gz-and-xz-extract/id6496853740)

Easily open Unix-type archive files like tar, tar.gz, and xz with this intuitive extractor. Simply select your archive and let the tool automatically extract its contents, offering a preview of the files within.

**Highlights:** Extract tar.gz, tar.xz, tar, zip, bz2, br, 7z, Intuitive interface, Preview extracted files, Built-in File Explorer, Automatic extraction process

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

**In-app purchases:** none


## Frequently asked questions

### Is Diffraction Grating Calculator free?

Diffraction Grating Calculator costs $2.99, with no in-app purchases.

### Is TAR GZ & XZ Extract free?

TAR GZ & XZ Extract is free to download, with no in-app purchases.

### Do Diffraction Grating Calculator or TAR GZ & XZ Extract have ads?

TAR GZ & XZ Extract shows ads; Diffraction Grating Calculator does not.

### Which is updated more often, Diffraction Grating Calculator or TAR GZ & XZ Extract?

Diffraction Grating Calculator ships an update every 29 months, and TAR GZ & XZ Extract every 9 months. Most recently, Diffraction Grating Calculator was updated on October 15, 2026 and TAR GZ & XZ Extract on October 24, 2026.

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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.*