# Cafactor vs ねむカフェ

The clearest difference is in-app purchases: ねむカフェ at none against Cafactor's 1. ねむカフェ also leads on iOS requirement (13.0 vs 17.6). Cafactor's advantage is ads (none vs shown) and update cadence (weekly vs every 6 weeks). On price, review sentiment and device support there is nothing between them.

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

Cafactor ships an update weekly, ねむカフェ every 6 weeks. The most recent releases landed on September 25, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | Cafactor | ねむカフェ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/cafactor/id6757445668/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | **Weekly** | Every 6 weeks |
| Monetization | Freemium | **Ad-supported** |
| Size | 9 MB | 36 MB |
| Requires iOS | 17.6 | **13.0** |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Nan Yu](https://appshunter.io/developer/1559044036) | [KAZUKI SHIOTSUKI](https://appshunter.io/developer/1885130071) |

## What reviewers say

### Cafactor

[App page](https://appshunter.io/ios/app/cafactor/id6757445668)

This app models your body's real-time caffeine levels using a scientific pharmacokinetic approach. It helps you understand your caffeine absorption, decay, and personal sleep thresholds, adapting to your unique biology and activity. Connect with health data for an even smarter metabolic coaching experience.

**Highlights:** Real-time caffeine curve modeling, Personalized physiological parameters, HealthKit integration for adaptive coaching, Exercise and sleep-adaptive thresholds, HRV & Recovery integration, Progressive calibration of half-life, Offline, private tracking

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Cafactor Pro | $3.99 | one-time |


### 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


## Frequently asked questions

### Is Cafactor free?

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

### Is ねむカフェ free?

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

### Do Cafactor or ねむカフェ have ads?

ねむカフェ shows ads; Cafactor does not.

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

Cafactor ships an update weekly, and ねむカフェ every 6 weeks. Most recently, Cafactor was updated on September 25, 2026 and ねむカフェ on September 18, 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.*