# fitZone GmbH vs Water Reminder Tracker App

The clearest difference is in-app purchases: fitZone GmbH at none against Water Reminder Tracker App's 3. fitZone GmbH also leads on ads (none vs shown) and iOS requirement (15.0 vs 17.0). Water Reminder Tracker App's advantage is update cadence (every 8 days vs every 9 months). On price and device support there is nothing between them.

Both are free to download. Water Reminder Tracker App sells 3 in-app purchases, starting at $2.99 per month. fitZone GmbH asks for nothing beyond the download.

fitZone GmbH ships an update every 9 months, Water Reminder Tracker App every 8 days. Both last shipped on October 25, 2026.

## The numbers

| Metric | fitZone GmbH | Water Reminder Tracker App |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 9 months | **Every 8 days** |
| Size | 147 MB | 13 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 12+ | 4+ |
| Developer | [fitZone GmbH](https://appshunter.io/developer/1685854281) | [Akash Mangukiya](https://appshunter.io/developer/1883293309) |

## What reviewers say

### fitZone GmbH

[App page](https://appshunter.io/ios/app/fitzone-gmbh/id6448723288)

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

**In-app purchases:** none


### Water Reminder Tracker App

[App page](https://appshunter.io/ios/app/water-reminder-tracker-app/id6761617425)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Hydra Pro Monthly | $2.99 | per month |
| Hydra Pro Annual | $19.99 | per year |
| Hydra Pro Lifetime | $49.99 | one-time |


## Frequently asked questions

### Is fitZone GmbH free?

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

### Is Water Reminder Tracker App free?

Water Reminder Tracker App is free to download, with in-app purchases available.

### Do fitZone GmbH or Water Reminder Tracker App have ads?

Water Reminder Tracker App shows ads; fitZone GmbH does not.

### Which is updated more often, fitZone GmbH or Water Reminder Tracker App?

fitZone GmbH ships an update every 9 months, and Water Reminder Tracker App every 8 days. Most recently, fitZone GmbH was updated on October 25, 2026 and Water Reminder Tracker App on October 25, 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.*