# Gabo KKS vs Pipe Diameter Calculators

The clearest difference is in-app purchases: Gabo KKS at none against Pipe Diameter Calculators's 1. Gabo KKS also leads on update cadence (every 4 months vs every 20 months) and iOS requirement (12.1 vs 15.6). On price, ads and device support there is nothing between them.

Both are free to download. Pipe Diameter Calculators sells 1 one-off in-app purchase. Gabo KKS asks for nothing beyond the download.

Gabo KKS ships an update every 4 months, Pipe Diameter Calculators every 20 months. The most recent releases landed on October 27, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | Gabo KKS | Pipe Diameter Calculators |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 20 months |
| Size | 21 MB | 59 MB |
| Requires iOS | **12.1** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [GABO IDM mbH](https://appshunter.io/developer/1275464326) | [Ashvin Kevadiya](https://appshunter.io/developer/1756324971) |

## What reviewers say

### Gabo KKS

[App page](https://appshunter.io/ios/app/gabo-kks/id1585646493)

**Features:** macOS Compatibility

**In-app purchases:** none


### Pipe Diameter Calculators

[App page](https://appshunter.io/ios/app/pipe-diameter-calculators/id6743020859)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime | $9.99 | one-time |


## Frequently asked questions

### Is Gabo KKS free?

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

### Is Pipe Diameter Calculators free?

Pipe Diameter Calculators is free to download, with in-app purchases available.

### Do Gabo KKS or Pipe Diameter Calculators have ads?

Neither Gabo KKS nor Pipe Diameter Calculators shows ads.

### Which is updated more often, Gabo KKS or Pipe Diameter Calculators?

Gabo KKS ships an update every 4 months, and Pipe Diameter Calculators every 20 months. Most recently, Gabo KKS was updated on October 27, 2026 and Pipe Diameter Calculators on October 29, 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.*