# Caffeine Curve vs Coffee Clock

The clearest difference is ads: Caffeine Curve at none against Coffee Clock's shown. Coffee Clock's advantage is device support (3 vs 1) and iOS requirement (13.0 vs 16.6). On price, update cadence and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Caffeine Curve ships an update fortnightly, Coffee Clock every 2 weeks. The most recent releases landed on October 10, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Caffeine Curve | Coffee Clock |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (4 ratings)](https://appshunter.io/ios/app/caffeine-curve/id6760567892/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Fortnightly | **Every 2 weeks** |
| Monetization | Free | — |
| Size | 4 MB | 31 MB |
| Requires iOS | 16.6 | **13.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Haris Delalic](https://appshunter.io/developer/1885039771) | [Luc Pham Van](https://appshunter.io/developer/1544588097) |

## What reviewers say

### Caffeine Curve

[App page](https://appshunter.io/ios/app/caffeine-curve/id6760567892)

This app estimates your current caffeine level in real-time by analyzing dietary caffeine entries from Apple Health. It helps you understand how caffeine affects your body throughout the day, aiding decisions about intake and sleep. The interface is designed for quick, clear information.

**Highlights:** Real-time caffeine level tracking, Caffeine absorption and elimination model, Apple Health integration, Lock Screen widget and Home Screen Widgets, Peak and sleep indicators, Personalized sensitivity profiles, Demo mode for exploration

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 Caffeine Curve free?

Caffeine Curve is free to download, with no in-app purchases.

### Is Coffee Clock free?

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

### Do Caffeine Curve or Coffee Clock have ads?

Coffee Clock shows ads; Caffeine Curve does not.

### Which is updated more often, Caffeine Curve or Coffee Clock?

Caffeine Curve ships an update fortnightly, and Coffee Clock every 2 weeks. Most recently, Caffeine Curve was updated on October 10, 2026 and Coffee Clock on October 15, 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.*