# ねむカフェ vs Caffeine Clock

The clearest difference is in-app purchases: ねむカフェ at none against Caffeine Clock's 1. ねむカフェ also leads on iOS requirement (13.0 vs 18.0). Caffeine Clock's advantage is ads (none vs shown) and update cadence (every 2 days vs every 6 weeks). On price and device support there is nothing between them.

Both are free to download. Caffeine Clock sells 1 one-off in-app purchase. ねむカフェ asks for nothing beyond the download.

ねむカフェ ships an update every 6 weeks, Caffeine Clock every 2 days. The most recent releases landed on September 18, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | ねむカフェ | Caffeine Clock |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 6 weeks | **Every 2 days** |
| Monetization | Ad-supported | — |
| Size | 36 MB | 6 MB |
| Requires iOS | **13.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, Apple Watch |
| Age rating | 4+ | 12+ |
| Developer | [KAZUKI SHIOTSUKI](https://appshunter.io/developer/1885130071) | [kazunari aoki](https://appshunter.io/developer/6774180811) |

## What reviewers say

### ねむカフェ

[App page](https://appshunter.io/ios/app/id6763675304)

This app helps you manage caffeine intake by calculating how much remains in your body based on what you drink and your bedtime. It provides personalized recommendations to help you enjoy caffeinated beverages without compromising your sleep.

**Highlights:** Caffeine remaining calculation, Personalized half-life settings, 3-stage intake recommendations, Customizable beverage list, Consumption logging, Home screen widget

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

**In-app purchases:** none


### Caffeine Clock

[App page](https://appshunter.io/ios/app/caffeine-clock-bedtime/id6796871272)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Caffeine Clock Pro | $9.99 | one-time |


## Frequently asked questions

### Is ねむカフェ free?

ねむカフェ is free to download, with no in-app purchases.

### Is Caffeine Clock free?

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

### Do ねむカフェ or Caffeine Clock have ads?

ねむカフェ shows ads; Caffeine Clock does not.

### Which is updated more often, ねむカフェ or Caffeine Clock?

ねむカフェ ships an update every 6 weeks, and Caffeine Clock every 2 days. Most recently, ねむカフェ was updated on September 18, 2026 and Caffeine Clock on September 8, 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.*