# GROHE Watersystems vs HowMany Events

The clearest difference is ads: GROHE Watersystems at none against HowMany Events's shown. GROHE Watersystems also leads on iOS requirement (14.0 vs 17.6). HowMany Events's advantage is update cadence (every 9 days vs every 4 months). On price, 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.

GROHE Watersystems ships an update every 4 months, HowMany Events every 9 days. The most recent releases landed on October 24, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | GROHE Watersystems | HowMany Events |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 7.0% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 4 months | **Every 9 days** |
| Monetization | Free | — |
| Size | 86 MB | 7 MB |
| Requires iOS | **14.0** | 17.6 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [Grohe AG](https://appshunter.io/developer/567504975) | [Patrick Wahler](https://appshunter.io/developer/1887211974) |

## What reviewers say

### GROHE Watersystems

[App page](https://appshunter.io/ios/app/grohe-watersystems/id1502247993)

Manage your GROHE Blue Chilled and Sparkling 2.0 faucet directly from your smartphone. Set personalized water preferences, monitor consumption, and receive timely alerts for filter and CO2 bottle replacements.

**Highlights:** Smartphone faucet control, Personalized water settings, Water consumption monitoring, Filter and CO2 replacement alerts, Automatic data transfer from Ondus App

**Features:** Apple Wallet, Vision Pro support

**In-app purchases:** none


### HowMany Events

[App page](https://appshunter.io/ios/app/howmany-events/id6761000925)

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

**In-app purchases:** none


## Frequently asked questions

### Is GROHE Watersystems free?

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

### Is HowMany Events free?

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

### Do GROHE Watersystems or HowMany Events have ads?

HowMany Events shows ads; GROHE Watersystems does not.

### Which is updated more often, GROHE Watersystems or HowMany Events?

GROHE Watersystems ships an update every 4 months, and HowMany Events every 9 days. Most recently, GROHE Watersystems was updated on October 24, 2026 and HowMany Events 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.*