# SUN vs WeldOffice

The clearest difference is update cadence: WeldOffice at every 3 months against SUN's every 14 months. WeldOffice also leads on device support. SUN's advantage is iOS requirement (13.4 vs 16.6). On price and in-app purchases there is nothing between them.

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

SUN ships an update every 14 months, WeldOffice every 3 months. The most recent releases landed on October 11, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | SUN | WeldOffice |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | — | No |
| Update frequency | Every 14 months | **Every 3 months** |
| Size | 24 MB | 20 MB |
| Requires iOS | **13.4** | 16.6 |
| Devices | — | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [SUN-TEC CORPORATION](https://appshunter.io/developer/1711446511) | [ASMEIX CORPORATION](https://appshunter.io/developer/911716652) |

## What reviewers say

### SUN

[App page](https://appshunter.io/ios/app/sun-tec/id6469055994)

**In-app purchases:** none


### WeldOffice

[App page](https://appshunter.io/ios/app/weldoffice/id6615075038)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is SUN free?

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

### Is WeldOffice free?

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

### Which is updated more often, SUN or WeldOffice?

SUN ships an update every 14 months, and WeldOffice every 3 months. Most recently, SUN was updated on October 11, 2026 and WeldOffice on October 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.*