# パニックログ vs みずたま

The clearest difference is in-app purchases: みずたま at none against パニックログ's 4. パニックログ's advantage is device support (3 vs 1). On price, update cadence, ads and iOS requirement there is nothing between them.

Both are free to download. パニックログ sells 4 one-off in-app purchases. みずたま asks for nothing beyond the download.

パニックログ ships an update every 6 days, みずたま every 4 days. The most recent releases landed on November 8, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | パニックログ | みずたま |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 6 days | **Every 4 days** |
| Monetization | — | Free |
| Size | 45 MB | 64 MB |
| Requires iOS | 18.2 | **17.0** |
| Devices | **iPhone, iPad, Apple Watch** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Koya Ohashi](https://appshunter.io/developer/1804230941) | [Hayato Tsuchikawa](https://appshunter.io/developer/1863967283) |

## What reviewers say

### パニックログ

[App page](https://appshunter.io/ios/app/id6743728376)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 気持ちを送る ¥100 | $0.49 | one-time |
| 気持ちを送る ¥250 | $1.99 | one-time |
| 気持ちを送る ¥500 | $2.99 | one-time |
| 気持ちを送る ¥1,000 | $5.99 | one-time |


### 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, iPhone Duo support

**In-app purchases:** none


## Frequently asked questions

### Is パニックログ free?

パニックログ is free to download, with in-app purchases available.

### Is みずたま free?

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

### Do パニックログ or みずたま have ads?

Neither パニックログ nor みずたま shows ads.

### Which is updated more often, パニックログ or みずたま?

パニックログ ships an update every 6 days, and みずたま every 4 days. Most recently, パニックログ was updated on November 8, 2026 and みずたま 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.*