# Hydroo vs Water Tracker Reminder

The clearest difference is in-app purchases: Hydroo at none against Water Tracker Reminder's 3. Hydroo also leads on iOS requirement (17.0 vs 26.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Water Tracker Reminder sells 3 in-app purchases, starting at $1.99 per 7 days. Hydroo asks for nothing beyond the download.

Hydroo ships an update fortnightly, Water Tracker Reminder every 3 weeks. The most recent releases landed on November 8, 2026 and November 10, 2026 respectively.

## The numbers

| Metric | Hydroo | Water Tracker Reminder |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 3 weeks |
| Size | 23 MB | 24 MB |
| Requires iOS | **17.0** | 26.0 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | +4 |
| Developer | [Khawlah Bawazir](https://appshunter.io/developer/1627702695) | [Geek Dev Technologies](https://appshunter.io/developer/1816216880) |

## What reviewers say

### Hydroo

[App page](https://appshunter.io/ios/app/hydroo/id6504790565)

**In-app purchases:** none


### Water Tracker Reminder

[App page](https://appshunter.io/ios/app/water-tracker-reminder-siply/id6780804259)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly PRO | $1.99 | per 7 days |
| Annual PRO | $9.99 | per year |
| Lifetime PRO | $19.99 | one-time |


## Frequently asked questions

### Is Hydroo free?

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

### Is Water Tracker Reminder free?

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

### Do Hydroo or Water Tracker Reminder have ads?

Neither Hydroo nor Water Tracker Reminder shows ads.

### Which is updated more often, Hydroo or Water Tracker Reminder?

Hydroo ships an update fortnightly, and Water Tracker Reminder every 3 weeks. Most recently, Hydroo was updated on November 8, 2026 and Water Tracker Reminder on November 10, 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.*