# Cafactor vs Caffie

The clearest difference is device support: Cafactor at 3 against Caffie's —. On price, in-app purchases and iOS requirement there is nothing between them.

Both are free to download. Cafactor sells 1 one-off in-app purchase and Caffie sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | Cafactor | Caffie |
| --- | --- | --- |
| 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 | Yes |
| Ads | No | — |
| Update frequency | Weekly | — |
| Monetization | Freemium | — |
| Size | 9 MB | 2 MB |
| Requires iOS | **17.6** | 18.0 |
| Devices | **iPhone, iPad, Apple Watch** | — |
| Age rating | 4+ | 12+ |
| Developer | [Nan Yu](https://appshunter.io/developer/1559044036) | [Kosuke Sakuma](https://appshunter.io/developer/1889104068) |

## 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 |


### Caffie

[App page](https://appshunter.io/ios/app/caffie/id6761358126)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Caffie Pro | $2.99 | one-time |


## Frequently asked questions

### Is Cafactor free?

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

### Is Caffie free?

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

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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.*