# みずたま vs ond

The clearest difference is in-app purchases: みずたま at none against ond's 1. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. ond sells 1 in-app purchase, starting at $2.99 per month. みずたま asks for nothing beyond the download.

みずたま ships an update every 3 days, ond every 5 days. The most recent releases landed on October 21, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | みずたま | ond |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 3 days** | Every 5 days |
| Monetization | Free | — |
| Size | 63 MB | 12 MB |
| Requires iOS | 17.0 | **16.0** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Hayato Tsuchikawa](https://appshunter.io/developer/1863967283) | [Yuta Totsuka](https://appshunter.io/developer/952307846) |

## What reviewers say

### みずたま

[App page](https://appshunter.io/ios/app/id6765880982)

This app helps you stay hydrated by tracking your water intake with a cute, interactive companion. It gamifies the process with a character that reacts to your progress, making hydration fun and motivating. Enjoy a visually pleasing and minimalist experience focused solely on water consumption.

**Highlights:** Interactive character that reacts to hydration progress, Customizable reminders, Home screen widgets, Daily, weekly, and monthly statistics, Streak tracking, Preset drink registration, Data privacy focused

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

**In-app purchases:** none


### ond

[App page](https://appshunter.io/ios/app/ond/id6767550635)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ond plus | $2.99 | per month |


## Frequently asked questions

### Is みずたま free?

みずたま is free to download, with no in-app purchases.

### Is ond free?

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

### Do みずたま or ond have ads?

Neither みずたま nor ond shows ads.

### Which is updated more often, みずたま or ond?

みずたま ships an update every 3 days, and ond every 5 days. Most recently, みずたま was updated on October 21, 2026 and ond on October 15, 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.*