# A vs Welding Reference Pro

The clearest difference is update cadence: Welding Reference Pro at every 4 days against A's every 10 months. A's advantage is monetization model (free vs free with in-app purchases) and device support (4 vs 1). On price, rating, ratings volume and ads there is nothing between them.

Both are free to download. A sells 1 one-off in-app purchase and Welding Reference Pro sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 5.0 for A against 5.0 for Welding Reference Pro. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

A ships an update every 10 months, Welding Reference Pro every 4 days. The most recent releases landed on September 7, 2026 and August 27, 2026 respectively.

## The numbers

| Metric | A | Welding Reference Pro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/a-number/id1547102751/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/welding-reference-pro/id6761250858/reviews) |
| Number of ratings | 1 | 1 |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 10 months | **Every 4 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 2 MB | 6 MB |
| Requires iOS | **13.0** | 18.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Shabbir Ahmed](https://appshunter.io/developer/1083166021) | [ZIma Logistics LLC](https://appshunter.io/developer/1883563240) |

## What reviewers say

### A

[App page](https://appshunter.io/ios/app/a-number/id1547102751)

This utility app calculates the A-Number for deposited weld metal based on its chemical composition. It simplifies the process of comparing weld metal composition against ASME Section IX standards, aiding in procedure qualification and ensuring compliance.

**Highlights:** Determines A-Number from chemical composition, Compares weld metal to ASME Section IX ranges, Aids in procedure qualification, Supports ASME Section IX 2023 Edition, Provides accurate results

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Non-Consumable Subscription | $1.99 | one-time |


### 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 A free?

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

### Is Welding Reference Pro free?

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

### Which has better reviews, A or Welding Reference Pro?

A and Welding Reference Pro are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.

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

Neither A nor Welding Reference Pro shows ads.

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

A ships an update every 10 months, and Welding Reference Pro every 4 days. Most recently, A was updated on September 7, 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.*