# Waterd vs OmizuTomo

The clearest difference is rating: OmizuTomo at 5.0 against Waterd's 4.0. OmizuTomo also leads on in-app purchases (none vs 3). Waterd's advantage is update cadence (every 3 days vs weekly). On price, ratings volume, ads and device support there is nothing between them.

Both are free to download. Waterd sells 3 in-app purchases, starting at $1.99 per month. OmizuTomo asks for nothing beyond the download.

OmizuTomo holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

Waterd ships an update every 3 days, OmizuTomo weekly. Both last shipped on October 31, 2026.

## The numbers

| Metric | Waterd | OmizuTomo |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (1 ratings)](https://appshunter.io/ios/app/waterd/id6761774902/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/omizutomo/id6777340045/reviews)** |
| Number of ratings | 1 | 1 |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 days** | Weekly |
| Monetization | Freemium | **Free** |
| Size | 11 MB | 1 MB |
| Requires iOS | **26.0** | 26.5 |
| Devices | iPhone | **iPhone, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Wenjie Zhang](https://appshunter.io/developer/1891409645) | [Allen Collins](https://appshunter.io/developer/6777340047) |

## What reviewers say

### Waterd

[App page](https://appshunter.io/ios/app/waterd/id6761774902)

This app automatically sets personalized daily water intake goals based on activity and weather, using on-device AI. It offers quick logging via widgets and notifications, with weekly insights for reflection. All data remains private and on your device.

**Highlights:** AI-powered personalized hydration goals, On-device processing for privacy, Quick logging via widgets and notifications, Weekly hydration insights, HealthKit integration, No ads or tracking

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Waterd Premium | $1.99 | per month |
| Waterd Premium | $4.99 | per year |
| Waterd Premium Lifetime | $7.99 | one-time |


### OmizuTomo

[App page](https://appshunter.io/ios/app/omizutomo/id6777340045)

This application serves as a personal hydration companion, sending timely reminders to ensure you drink enough water throughout the day. It helps you maintain optimal hydration levels for better health and well-being.

**Highlights:** Hydration reminders, Water intake tracking, Simple interface, Supports Apple Watch and iPhone

**Features:** Apple Watch app

**In-app purchases:** none


## Frequently asked questions

### Is Waterd free?

Waterd is free to download, with in-app purchases available.

### Is OmizuTomo free?

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

### Which has better reviews, Waterd or OmizuTomo?

OmizuTomo is rated higher. Waterd averages 4.0 out of 5 from 1 ratings, while OmizuTomo averages 5.0 from 1 ratings.

### Do Waterd or OmizuTomo have ads?

Neither Waterd nor OmizuTomo shows ads.

### Which is updated more often, Waterd or OmizuTomo?

Waterd ships an update every 3 days, and OmizuTomo weekly. Most recently, Waterd was updated on October 31, 2026 and OmizuTomo on October 31, 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.*