# Welding Reference Pro vs WelderCalc

The clearest difference is iOS requirement: WelderCalc at 16.0 against Welding Reference Pro's 18.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Welding Reference Pro sells 1 one-off in-app purchase and WelderCalc sells 3 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

Both ship on a similar rhythm, roughly every 4 days. The most recent releases landed on September 26, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | Welding Reference Pro | WelderCalc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/welding-reference-pro/id6761250858/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 4 days | Every 4 days |
| Monetization | Free with in-app purchases | — |
| Size | 6 MB | 1 MB |
| Requires iOS | 18.0 | **16.0** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [ZIma Logistics LLC](https://appshunter.io/developer/1883563240) | [Double Vision USA LLC](https://appshunter.io/developer/1894678139) |

## What reviewers say

### Welding Reference Pro

[App page](https://appshunter.io/ios/app/welding-reference-pro/id6761250858)

This app provides welders with essential tools, including calculators for settings and costs, comprehensive reference guides, and exam preparation modules. It offers offline access to all features, with a one-time purchase unlocking advanced calculators and exam practice.

**Highlights:** Weld setting calculators, Filler metal estimation, Unit conversion, Reference guides, Training modules, Exam preparation, Qualification tracking

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Tools | $9.99 | one-time |


### WelderCalc

[App page](https://appshunter.io/ios/app/weldercalc-welding-calculator/id6763315264)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly | $3.99 | per month |
| Pro Yearly | $28.99 | per year |
| Pro Unlock | $19.99 | one-time |


## Frequently asked questions

### Is Welding Reference Pro free?

Welding Reference Pro is free to download, with in-app purchases available.

### Is WelderCalc free?

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

### Do Welding Reference Pro or WelderCalc have ads?

Neither Welding Reference Pro nor WelderCalc shows ads.

### Which is updated more often, Welding Reference Pro or WelderCalc?

Welding Reference Pro ships an update every 4 days, and WelderCalc every 4 days. Most recently, Welding Reference Pro was updated on September 26, 2026 and WelderCalc on September 20, 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.*