# Atama | Caffeine Focus Tracker vs みずたま

The clearest difference is in-app purchases: みずたま at none against Atama | Caffeine Focus Tracker's 6. On price, review sentiment, update cadence and ads there is nothing between them.

Both are free to download. Atama | Caffeine Focus Tracker sells 6 in-app purchases, starting at $1.99 per month. みずたま asks for nothing beyond the download.

Atama | Caffeine Focus Tracker ships an update every 5 days, みずたま every 4 days. The most recent releases landed on October 24, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Atama | Caffeine Focus Tracker | みずたま |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 5 days | **Every 4 days** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 189 MB | 64 MB |
| Requires iOS | 17.6 | **17.0** |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [株式会社オポチュニティ](https://appshunter.io/developer/1740927723) | [Hayato Tsuchikawa](https://appshunter.io/developer/1863967283) |

## What reviewers say

### Atama | Caffeine Focus Tracker

[App page](https://appshunter.io/ios/app/atama-caffeine-focus-tracker/id6496281922)

Optimize your caffeine intake to enhance focus and productivity. This app tracks your consumption, provides timely reminders, and offers ambient soundscapes to help you achieve a flow state. It also helps prevent overconsumption and integrates with Apple Health.

**Highlights:** Automatic caffeine intake calculation, Optimized caffeine timing notifications, Immersive soundscapes for concentration, Daily caffeine intake tracking, Overconsumption alerts, Apple Health integration

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ハイパーフォーカスプラン(月額) | $1.99 | per month |
| ハイパーフォーカスプラン（年額） | $3.99 | per year |
| ハイパーフォーカスプラン(年額) | $6.99 | per year |
| ハイパーフォーカスプラン（永久版） | $5.99 | one-time |
| ハイパーフォーカスプラン(特別オファー) | $9.99 | one-time |
| ハイパーフォーカスプラン(永久版) | $11.99 | 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 Atama | Caffeine Focus Tracker free?

Atama | Caffeine Focus Tracker 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 Atama | Caffeine Focus Tracker or みずたま have ads?

Neither Atama | Caffeine Focus Tracker nor みずたま shows ads.

### Which is updated more often, Atama | Caffeine Focus Tracker or みずたま?

Atama | Caffeine Focus Tracker ships an update every 5 days, and みずたま every 4 days. Most recently, Atama | Caffeine Focus Tracker was updated on October 24, 2026 and みずたま on October 28, 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.*