# Webmecanik Pipeline vs Kelper

The clearest difference is in-app purchases: Webmecanik Pipeline at none against Kelper's 2. Kelper's advantage is update cadence (weekly vs every 3 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Kelper sells 2 in-app purchases, starting at $5.99 per month. Webmecanik Pipeline asks for nothing beyond the download.

Webmecanik Pipeline ships an update every 3 months, Kelper weekly. Both last shipped on October 25, 2026.

## The numbers

| Metric | Webmecanik Pipeline | Kelper |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Weekly** |
| Size | 2 MB | 112 MB |
| Requires iOS | **15.0** | 16.5 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [Webmecanik](https://appshunter.io/developer/1722042655) | [Otterly Space](https://appshunter.io/developer/1783624615) |

## What reviewers say

### Webmecanik Pipeline

[App page](https://appshunter.io/ios/app/webmecanik-pipeline/id6476092831)

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

**In-app purchases:** none


### Kelper

[App page](https://appshunter.io/ios/app/kelper/id6739311768)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Basique Mensuel | $5.99 | per month |
| Basique Annuel | $59.99 | per year |


## Frequently asked questions

### Is Webmecanik Pipeline free?

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

### Is Kelper free?

Kelper is free to download, with in-app purchases available.

### Do Webmecanik Pipeline or Kelper have ads?

Neither Webmecanik Pipeline nor Kelper shows ads.

### Which is updated more often, Webmecanik Pipeline or Kelper?

Webmecanik Pipeline ships an update every 3 months, and Kelper weekly. Most recently, Webmecanik Pipeline was updated on October 25, 2026 and Kelper on October 25, 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.*