# Reflex Pro App vs Gemeinde Erlabrunn

The clearest difference is update cadence: Reflex Pro App at every 4 months against Gemeinde Erlabrunn's every 19 months. Gemeinde Erlabrunn's advantage is iOS requirement (13.0 vs 15.0). 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.

Reflex Pro App ships an update every 4 months, Gemeinde Erlabrunn every 19 months. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Reflex Pro App | Gemeinde Erlabrunn |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 44.4% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 19 months |
| Monetization | Free | — |
| Size | 19 MB | 28 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [ConSoft](https://appshunter.io/developer/397747217) | [Gemeinde Erlabrunn](https://appshunter.io/developer/1662088471) |

## What reviewers say

### Reflex Pro App

[App page](https://appshunter.io/ios/app/reflex-pro-app/id424178409)

This app provides instant calculations for pressure maintenance in heating, solar, and hot water systems. It helps define pressures and account for water hardness, aiding in project surveys and on-site consultations for accurate system assessments.

**Highlights:** Pressure maintenance calculations, Expansion vessel calculation, Upstream and filling pressure definition, Water hardness consideration, VDI 2035 compliance, On-site project surveys

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

**In-app purchases:** none


### Gemeinde Erlabrunn

[App page](https://appshunter.io/ios/app/gemeinde-erlabrunn/id1662088469)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Reflex Pro App free?

Reflex Pro App is free to download, with no in-app purchases.

### Is Gemeinde Erlabrunn free?

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

### Do Reflex Pro App or Gemeinde Erlabrunn have ads?

Neither Reflex Pro App nor Gemeinde Erlabrunn shows ads.

### Which is updated more often, Reflex Pro App or Gemeinde Erlabrunn?

Reflex Pro App ships an update every 4 months, and Gemeinde Erlabrunn every 19 months. Most recently, Reflex Pro App was updated on November 1, 2026 and Gemeinde Erlabrunn on November 3, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*