# KEMPER HS2 vs TOPO.app

KEMPER HS2 and TOPO.app are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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, TOPO.app every 2 months. The most recent releases landed on October 15, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | KEMPER HS2 | TOPO.app |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 months** |
| Monetization | Free | — |
| Size | 29 MB | 37 MB |
| Requires iOS | **15.6** | 16.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Gebr. Kemper GmbH + Co. KG](https://appshunter.io/developer/971204756) | [RTB Elektronik](https://appshunter.io/developer/1033533477) |

## 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


### TOPO.app

[App page](https://appshunter.io/ios/app/topoapp/id1536386836)

**In-app purchases:** none


## Frequently asked questions

### Is KEMPER HS2 free?

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

### Is TOPO.app free?

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

### Do KEMPER HS2 or TOPO.app have ads?

Neither KEMPER HS2 nor TOPO.app shows ads.

### Which is updated more often, KEMPER HS2 or TOPO.app?

KEMPER HS2 ships an update every 4 months, and TOPO.app every 2 months. Most recently, KEMPER HS2 was updated on October 15, 2026 and TOPO.app on October 27, 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.*