# Cafactor vs Coffee Clock

The clearest difference is in-app purchases: Coffee Clock at none against Cafactor's 1. Coffee Clock also leads on iOS requirement (13.0 vs 17.6). Cafactor's advantage is ads (none vs shown). On price, update cadence and device support there is nothing between them.

Both are free to download. Cafactor sells 1 one-off in-app purchase. Coffee Clock asks for nothing beyond the download.

Cafactor ships an update weekly, Coffee Clock every 2 weeks. The most recent releases landed on September 9, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | Cafactor | Coffee Clock |
| --- | --- | --- |
| 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 | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | **Weekly** | Every 2 weeks |
| Monetization | Freemium | — |
| Size | 9 MB | 30 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) | [Luc Pham Van](https://appshunter.io/developer/1544588097) |

## 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 |


### Coffee Clock

[App page](https://appshunter.io/ios/app/coffee-clock/id6762287408)

**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 Coffee Clock free?

Coffee Clock is free to download, with no in-app purchases.

### Do Cafactor or Coffee Clock have ads?

Coffee Clock shows ads; Cafactor does not.

### Which is updated more often, Cafactor or Coffee Clock?

Cafactor ships an update weekly, and Coffee Clock every 2 weeks. Most recently, Cafactor was updated on September 9, 2026 and Coffee Clock on September 10, 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.*