# Gas Compressibility Factor Z vs Megatuner Plus

The clearest difference is in-app purchases: Gas Compressibility Factor Z at none against Megatuner Plus's 2. Gas Compressibility Factor Z also leads on iOS requirement (13.0 vs 16.0). Megatuner Plus's advantage is update cadence (every 5 weeks vs every 8 months). On price, ads and device support there is nothing between them.

Both are free to download. Megatuner Plus sells 2 in-app purchases, starting at $4.49 per month. Gas Compressibility Factor Z asks for nothing beyond the download.

Gas Compressibility Factor Z ships an update every 8 months, Megatuner Plus every 5 weeks. Both last shipped on November 3, 2026.

## The numbers

| Metric | Gas Compressibility Factor Z | Megatuner Plus |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 5 weeks** |
| Size | 3 MB | 1 MB |
| Requires iOS | **13.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [Carlos Moura](https://appshunter.io/developer/407501202) | [Christer Dalen](https://appshunter.io/developer/1655576002) |

## What reviewers say

### Gas Compressibility Factor Z

[App page](https://appshunter.io/ios/app/gas-compressibility-factor-z/id1626924678)

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

**In-app purchases:** none


### Megatuner Plus

[App page](https://appshunter.io/ios/app/megatuner-plus/id1665781784)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Megatuner_Mimo Full | $4.49 | per month |
| Megatuner_Mimo Full | $44.90 | per year |


## Frequently asked questions

### Is Gas Compressibility Factor Z free?

Gas Compressibility Factor Z is free to download, with no in-app purchases.

### Is Megatuner Plus free?

Megatuner Plus is free to download, with in-app purchases available.

### Do Gas Compressibility Factor Z or Megatuner Plus have ads?

Neither Gas Compressibility Factor Z nor Megatuner Plus shows ads.

### Which is updated more often, Gas Compressibility Factor Z or Megatuner Plus?

Gas Compressibility Factor Z ships an update every 8 months, and Megatuner Plus every 5 weeks. Most recently, Gas Compressibility Factor Z was updated on November 3, 2026 and Megatuner Plus on November 3, 2026.

---

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