# Gear Lab vs KPS Welding

The clearest difference is update cadence: KPS Welding at every 4 months against Gear Lab's every 13 months. Gear Lab's advantage is iOS requirement (8.0 vs 15.6). 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.

Gear Lab ships an update every 13 months, KPS Welding every 4 months. The most recent releases landed on September 10, 2026 and September 16, 2026 respectively.

## The numbers

| Metric | Gear Lab | KPS Welding |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.5 (2 ratings)](https://appshunter.io/ios/app/gear-lab/id1013375198/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 13 months | **Every 4 months** |
| Monetization | Free | — |
| Size | 14 MB | 40 MB |
| Requires iOS | **8.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [SpiralArm Consulting Limited](https://appshunter.io/developer/836987822) | [Elaso AG](https://appshunter.io/developer/1487621454) |

## What reviewers say

### Gear Lab

[App page](https://appshunter.io/ios/app/gear-lab/id1013375198)

This utility app provides calculators for setting up, producing, and checking worm, helical, and spur gears. It can be used for individual calculations or as a complete process flow from start to finish.

**Highlights:** Worm gear calculations, Helical gear calculations, Spur gear calculations, Individual calculator use, Complete process flow, Base tangent data output

**In-app purchases:** none


### KPS Welding

[App page](https://appshunter.io/ios/app/kps-welding/id1487621455)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Gear Lab free?

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

### Is KPS Welding free?

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

### Do Gear Lab or KPS Welding have ads?

Neither Gear Lab nor KPS Welding shows ads.

### Which is updated more often, Gear Lab or KPS Welding?

Gear Lab ships an update every 13 months, and KPS Welding every 4 months. Most recently, Gear Lab was updated on September 10, 2026 and KPS Welding on September 16, 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.*