# KEMPER HS2 vs Rada AP1

The clearest difference is device support: KEMPER HS2 at 3 against Rada AP1's 1. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

KEMPER HS2 ships an update every 4 months, Rada AP1 every 7 months. The most recent releases landed on September 30, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | KEMPER HS2 | Rada AP1 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 7 months |
| Monetization | Free | — |
| Size | 29 MB | 11 MB |
| Requires iOS | 15.6 | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPad |
| Age rating | 4+ | 4+ |
| Developer | [Gebr. Kemper GmbH + Co. KG](https://appshunter.io/developer/971204756) | [Kohler Mira Ltd.](https://appshunter.io/developer/1107602815) |

## What reviewers say

### KEMPER HS2

[App page](https://appshunter.io/ios/app/kemper-hs2-app/id971204757)

Configure and manage your KHS-HS2 Hygiene-Flushing Box. View settings, read flushing logs, and easily update firmware for your device.

**Highlights:** Configure Hygiene-Flushing Box, Display adjustment values, Read flushing logs, Transmit firmware updates, Manage KHS-HS2 settings

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

**In-app purchases:** none


### Rada AP1

[App page](https://appshunter.io/ios/app/rada-ap1/id1107602816)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is KEMPER HS2 free?

KEMPER HS2 is free to download, with no in-app purchases.

### Is Rada AP1 free?

Rada AP1 is free to download, with no in-app purchases.

### Do KEMPER HS2 or Rada AP1 have ads?

Neither KEMPER HS2 nor Rada AP1 shows ads.

### Which is updated more often, KEMPER HS2 or Rada AP1?

KEMPER HS2 ships an update every 4 months, and Rada AP1 every 7 months. Most recently, KEMPER HS2 was updated on September 30, 2026 and Rada AP1 on October 8, 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.*