# Cat® Methane Number Calculator vs Advanced Forms

The clearest difference is iOS requirement: Cat® Methane Number Calculator at 8.0 against Advanced Forms's 16.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Cat® Methane Number Calculator ships an update every 3 weeks, Advanced Forms fortnightly. The most recent releases landed on October 11, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | Cat® Methane Number Calculator | Advanced Forms |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (1 ratings)](https://appshunter.io/ios/app/cat-methane-number-calculator/id1526710054/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Fortnightly** |
| Monetization | Free | — |
| Size | 49 MB | 56 MB |
| Requires iOS | **8.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Caterpillar Inc.](https://appshunter.io/developer/571668770) | [OmniByte Technology, Inc](https://appshunter.io/developer/1132612536) |

## What reviewers say

### Cat® Methane Number Calculator

[App page](https://appshunter.io/ios/app/cat-methane-number-calculator/id1526710054)

Quickly calculate methane number, heating value, and other natural gas parameters on your mobile device. Input standard gas samples or enter your own data from the job site without needing complex software.

**Highlights:** Methane number calculation, Heating value calculation, Natural gas parameter calculation, Standard gas samples pre-loaded, Custom sample input

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

**In-app purchases:** none


### Advanced Forms

[App page](https://appshunter.io/ios/app/advanced-forms/id6480013772)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Cat® Methane Number Calculator free?

Cat® Methane Number Calculator is free to download, with no in-app purchases.

### Is Advanced Forms free?

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

### Do Cat® Methane Number Calculator or Advanced Forms have ads?

Neither Cat® Methane Number Calculator nor Advanced Forms shows ads.

### Which is updated more often, Cat® Methane Number Calculator or Advanced Forms?

Cat® Methane Number Calculator ships an update every 3 weeks, and Advanced Forms fortnightly. Most recently, Cat® Methane Number Calculator was updated on October 11, 2026 and Advanced Forms on October 2, 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.*