# explainISO9606 vs Material Numbers

The clearest difference is price: Material Numbers at Free against explainISO9606's $1.99. Material Numbers also leads on update cadence (every 2 days vs every 4 months) and device support (3 vs 1). On ads and in-app purchases there is nothing between them.

Material Numbers is free to download; explainISO9606 costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

explainISO9606 ships an update every 4 months, Material Numbers every 2 days. The most recent releases landed on July 25, 2026 and May 16, 2026 respectively.

## The numbers

| Metric | explainISO9606 | Material Numbers |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 days** |
| Monetization | Paid | — |
| Size | 1 MB | 14 MB |
| Requires iOS | 17.0 | **13.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Georg Rose](https://appshunter.io/developer/521567472) | [ASMEIX CORPORATION](https://appshunter.io/developer/911716652) |

## What reviewers say

### explainISO9606

[App page](https://appshunter.io/ios/app/explainiso9606/id718226042)

This app helps users understand welder qualifications based on ISO 9606-1 standards. It provides detailed explanations and visual aids for specific welding parameters, allowing users to verify welder suitability for particular tasks.

**Highlights:** ISO 9606-1 welder qualification reference, Detailed explanations of welding elements, Visual aids and sketches, Welder suitability verification, Searchable ISO 9606-1 parameters

**Features:** macOS Compatibility

**In-app purchases:** none


### Material Numbers

[App page](https://appshunter.io/ios/app/material-numbers/id6503355283)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is explainISO9606 free?

explainISO9606 costs $1.99, with no in-app purchases.

### Is Material Numbers free?

Material Numbers is free to download, with no in-app purchases.

### Do explainISO9606 or Material Numbers have ads?

Neither explainISO9606 nor Material Numbers shows ads.

### Which is updated more often, explainISO9606 or Material Numbers?

explainISO9606 ships an update every 4 months, and Material Numbers every 2 days. Most recently, explainISO9606 was updated on July 25, 2026 and Material Numbers on May 16, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*