# McCalc Fusion Calculator vs Base Line Data

McCalc Fusion Calculator and Base Line Data are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

McCalc Fusion Calculator ships an update every 3 months, Base Line Data every 6 months. The most recent releases landed on November 1, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | McCalc Fusion Calculator | Base Line Data |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.4 (18 ratings)](https://appshunter.io/ios/app/mccalc-fusion-calculator/id376891708/reviews)** | — |
| Number of ratings | **18** | — |
| Positive reviews | 35.7% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 6 months |
| Monetization | Free | — |
| Size | 4 MB | 13 MB |
| Requires iOS | 16.4 | **15.6** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [McElroy Manufacturing, Inc.](https://appshunter.io/developer/376891711) | [Base Line Data, Inc.](https://appshunter.io/developer/1789253367) |

## What reviewers say

### McCalc Fusion Calculator

[App page](https://appshunter.io/ios/app/mccalc-fusion-calculator/id376891708)

This app calculates the correct fusion pressure for HDPE and Polypropylene pipe jobs. It simplifies the process by selecting your fusion machine and entering pipe details to determine the recommended theoretical gauge pressure.

**Highlights:** Select McElroy fusion machines, Choose from nine international standards, Enter pipe size in multiple units, Input wall thickness via dimensional ratio or actual thickness, Specify interfacial and drag pressure, Supports English, Spanish, and Portuguese

**Features:** macOS Compatibility

**In-app purchases:** none


### Base Line Data

[App page](https://appshunter.io/ios/app/base-line-data/id6740256181)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is McCalc Fusion Calculator free?

McCalc Fusion Calculator is free to download, with no in-app purchases.

### Is Base Line Data free?

Base Line Data is free to download, with no in-app purchases.

### Do McCalc Fusion Calculator or Base Line Data have ads?

Neither McCalc Fusion Calculator nor Base Line Data shows ads.

### Which is updated more often, McCalc Fusion Calculator or Base Line Data?

McCalc Fusion Calculator ships an update every 3 months, and Base Line Data every 6 months. Most recently, McCalc Fusion Calculator was updated on November 1, 2026 and Base Line Data on October 30, 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.*