# WeldEquations vs MPF System Check

The clearest difference is update cadence: MPF System Check at every 3 weeks against WeldEquations's every 12 months. MPF System Check also leads on iOS requirement (10.3 vs 26.0). 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.

WeldEquations ships an update every 12 months, MPF System Check every 3 weeks. The most recent releases landed on September 27, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | WeldEquations | MPF System Check |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 12 months | **Every 3 weeks** |
| Size | 7 MB | 20 MB |
| Requires iOS | 26.0 | **10.3** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Glendale Coding Labs, Inc](https://appshunter.io/developer/1266859626) | [GEVSITECH CO., LTD.](https://appshunter.io/developer/1316030259) |

## What reviewers say

### WeldEquations

[App page](https://appshunter.io/ios/app/weldequations/id1266859627)

**Features:** macOS Compatibility

**In-app purchases:** none


### MPF System Check

[App page](https://appshunter.io/ios/app/mpf-system-check/id1444541164)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is WeldEquations free?

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

### Is MPF System Check free?

MPF System Check is free to download, with no in-app purchases.

### Do WeldEquations or MPF System Check have ads?

Neither WeldEquations nor MPF System Check shows ads.

### Which is updated more often, WeldEquations or MPF System Check?

WeldEquations ships an update every 12 months, and MPF System Check every 3 weeks. Most recently, WeldEquations was updated on September 27, 2026 and MPF System Check on September 24, 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.*