# Welding Heat Input Calculator vs Welding Reference Pro

The clearest difference is price: Welding Reference Pro at Free against Welding Heat Input Calculator's $9.99. Welding Reference Pro also leads on update cadence (every 4 days vs every 6 months) and iOS requirement (18.0 vs 26.2). Welding Heat Input Calculator's advantage is in-app purchases (none vs 1). On ads and device support there is nothing between them.

Welding Reference Pro is free to download; Welding Heat Input Calculator costs $9.99 up front. Welding Reference Pro sells 1 one-off in-app purchase. Welding Heat Input Calculator asks for nothing beyond the download.

Welding Heat Input Calculator ships an update every 6 months, Welding Reference Pro every 4 days. The most recent releases landed on September 24, 2026 and August 27, 2026 respectively.

## The numbers

| Metric | Welding Heat Input Calculator | Welding Reference Pro |
| --- | --- | --- |
| Price | $9.99 | **Free** |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/welding-reference-pro/id6761250858/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 4 days** |
| Monetization | — | Free with in-app purchases |
| Size | 1 MB | 6 MB |
| Requires iOS | 26.2 | **18.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Shanghai Sheyuan Network Technology Co., Ltd.](https://appshunter.io/developer/1560626858) | [ZIma Logistics LLC](https://appshunter.io/developer/1883563240) |

## What reviewers say

### Welding Heat Input Calculator

[App page](https://appshunter.io/ios/app/welding-heat-input-calculator/id6760613465)

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

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is Welding Heat Input Calculator free?

Welding Heat Input Calculator costs $9.99, with no in-app purchases.

### Is Welding Reference Pro free?

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

### Do Welding Heat Input Calculator or Welding Reference Pro have ads?

Neither Welding Heat Input Calculator nor Welding Reference Pro shows ads.

### Which is updated more often, Welding Heat Input Calculator or Welding Reference Pro?

Welding Heat Input Calculator ships an update every 6 months, and Welding Reference Pro every 4 days. Most recently, Welding Heat Input Calculator was updated on September 24, 2026 and Welding Reference Pro on August 27, 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.*