# Stüwa vs Conzep

The clearest difference is update cadence: Stüwa at every 5 months against Conzep's every 31 months. Stüwa also leads on iOS requirement (11.0 vs 13.0). 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.

Stüwa ships an update every 5 months, Conzep every 31 months. The most recent releases landed on October 29, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | Stüwa | Conzep |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 months** | Every 31 months |
| Monetization | Free | — |
| Size | 6 MB | 1 MB |
| Requires iOS | **11.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [C&S concepts & solutions GmbH](https://appshunter.io/developer/562192033) | [BLUETRONIX LIMITED](https://appshunter.io/developer/1562473092) |

## What reviewers say

### Stüwa

[App page](https://appshunter.io/ios/app/stuwa/id1186665454)

This app provides a practical daily tool for well construction, water supply, pump design, geotechnics, drilling technology, and geothermal energy. It allows users to perform calculations, access product data sheets, and find industry information.

**Highlights:** Well construction calculations, Water supply information, Pump design tools, Geotechnics data, Drilling technology resources, Geothermal energy information, Product data sheets

**Features:** macOS Compatibility

**In-app purchases:** none


### Conzep

[App page](https://appshunter.io/ios/app/conzep/id1562473090)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Stüwa free?

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

### Is Conzep free?

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

### Do Stüwa or Conzep have ads?

Neither Stüwa nor Conzep shows ads.

### Which is updated more often, Stüwa or Conzep?

Stüwa ships an update every 5 months, and Conzep every 31 months. Most recently, Stüwa was updated on October 29, 2026 and Conzep on October 2, 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.*