# Caffeine Intake Tracker Log vs Caffeine Curve

The clearest difference is in-app purchases: Caffeine Curve at none against Caffeine Intake Tracker Log's 2. Caffeine Curve also leads on update cadence (fortnightly vs every 2 months) and iOS requirement (16.6 vs 18.0). On price, ads and device support there is nothing between them.

Both are free to download. Caffeine Intake Tracker Log sells 2 in-app purchases, starting at $1.99 per month. Caffeine Curve asks for nothing beyond the download.

Caffeine Intake Tracker Log ships an update every 2 months, Caffeine Curve fortnightly. The most recent releases landed on October 26, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Caffeine Intake Tracker Log | Caffeine Curve |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (5 ratings)](https://appshunter.io/ios/app/caffeine-curve/id6760567892/reviews)** |
| Number of ratings | — | **5** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Fortnightly** |
| Monetization | — | Free |
| Size | 14 MB | 4 MB |
| Requires iOS | 18.0 | **16.6** |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Mustafa Kulac](https://appshunter.io/developer/1782678392) | [Haris Delalic](https://appshunter.io/developer/1885039771) |

## What reviewers say

### Caffeine Intake Tracker Log

[App page](https://appshunter.io/ios/app/caffeine-intake-tracker-log/id6755601213)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $1.99 | per month |
| Annual | $6.99 | per year |


### 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


## Frequently asked questions

### Is Caffeine Intake Tracker Log free?

Caffeine Intake Tracker Log is free to download, with in-app purchases available.

### Is Caffeine Curve free?

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

### Do Caffeine Intake Tracker Log or Caffeine Curve have ads?

Neither Caffeine Intake Tracker Log nor Caffeine Curve shows ads.

### Which is updated more often, Caffeine Intake Tracker Log or Caffeine Curve?

Caffeine Intake Tracker Log ships an update every 2 months, and Caffeine Curve fortnightly. Most recently, Caffeine Intake Tracker Log was updated on October 26, 2026 and Caffeine Curve on October 24, 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.*