# IS RT vs Weldmaster AI

The clearest difference is in-app purchases: IS RT at none against Weldmaster AI's 2. Weldmaster AI's advantage is update cadence (every 5 days vs every 5 months) and iOS requirement (13.0 vs 15.6). On price, ads and device support there is nothing between them.

Both are free to download. Weldmaster AI sells 2 in-app purchases, starting at $4.99 per month. IS RT asks for nothing beyond the download.

IS RT ships an update every 5 months, Weldmaster AI every 5 days. The most recent releases landed on September 17, 2026 and September 7, 2026 respectively.

## The numbers

| Metric | IS RT | Weldmaster AI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[1.0 (1 ratings)](https://appshunter.io/ios/app/weldmaster-ai/id6758675752/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 5 days** |
| Monetization | — | Paid |
| Size | 28 MB | 29 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 12+ |
| Developer | [Institut de Soudure](https://appshunter.io/developer/1735474226) | [Remi VANHAELEWYN](https://appshunter.io/developer/1874354131) |

## What reviewers say

### IS RT

[App page](https://appshunter.io/ios/app/is-rt/id6479296879)

**Features:** macOS Compatibility

**In-app purchases:** none


### Weldmaster AI

[App page](https://appshunter.io/ios/app/weldmaster-ai/id6758675752)

This AI-powered tool helps users find optimal welding settings quickly. By analyzing a photo of your welder and your material details, it provides precise parameters for a perfect weld. It's designed for beginners and DIY enthusiasts looking to improve their welding skills.

**Highlights:** AI-powered welder recognition, Instant welding parameter generation, Material and thickness analysis, Recommended process (MIG/MAG/TIG), Expert mode with advanced features, Safety reminders and best practices

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Premium Subscription | $4.99 | per month |
| Monthly Premium Subscription | $4.99 | one-time |


## Frequently asked questions

### Is IS RT free?

IS RT is free to download, with no in-app purchases.

### Is Weldmaster AI free?

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

### Do IS RT or Weldmaster AI have ads?

Neither IS RT nor Weldmaster AI shows ads.

### Which is updated more often, IS RT or Weldmaster AI?

IS RT ships an update every 5 months, and Weldmaster AI every 5 days. Most recently, IS RT was updated on September 17, 2026 and Weldmaster AI on September 7, 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.*