# IS RT vs WeldUp Pocket

The clearest difference is update cadence: WeldUp Pocket at every 10 days against IS RT's every 5 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

IS RT ships an update every 5 months, WeldUp Pocket every 10 days. The most recent releases landed on September 17, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | IS RT | WeldUp Pocket |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 10 days** |
| Monetization | — | Free |
| Size | 28 MB | 62 MB |
| Requires iOS | 15.6 | **15.5** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [Institut de Soudure](https://appshunter.io/developer/1735474226) | [Lison Robin](https://appshunter.io/developer/6795987438) |

## What reviewers say

### IS RT

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

**Features:** macOS Compatibility

**In-app purchases:** none


### WeldUp Pocket

[App page](https://appshunter.io/ios/app/weldup-pocket/id6795987436)

This app provides a comprehensive suite of tools for pipefitters, welders, and fabricators. It offers calculations for offsets, tube bending, welding settings, and material specifications, all accessible offline. Designed for practical use in the field, it helps streamline complex calculations and job management.

**Highlights:** Offline functionality, Pipefitting calculations (offset, bending, templates), Welding settings and distortion analysis, Fabrication development tools, Material specification and traceability, Job management and export, Customizable interface for gloved hands

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

**In-app purchases:** none


## Frequently asked questions

### Is IS RT free?

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

### Is WeldUp Pocket free?

WeldUp Pocket is free to download, with no in-app purchases.

### Do IS RT or WeldUp Pocket have ads?

Neither IS RT nor WeldUp Pocket shows ads.

### Which is updated more often, IS RT or WeldUp Pocket?

IS RT ships an update every 5 months, and WeldUp Pocket every 10 days. Most recently, IS RT was updated on September 17, 2026 and WeldUp Pocket on September 24, 2026.

---

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