# Caffeine Curve vs Caffle

The clearest difference is in-app purchases: Caffeine Curve at none against Caffle's 3. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Caffle sells 3 in-app purchases, starting at $9.99 per 7 days. Caffeine Curve asks for nothing beyond the download.

Caffeine Curve ships an update fortnightly, Caffle monthly. The most recent releases landed on October 10, 2026 and September 27, 2026 respectively.

## The numbers

| Metric | Caffeine Curve | Caffle |
| --- | --- | --- |
| 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** | Yes |
| Ads | No | No |
| Update frequency | **Fortnightly** | Monthly |
| Monetization | Free | — |
| Size | 4 MB | 39 MB |
| Requires iOS | **16.6** | 17.0 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Haris Delalic](https://appshunter.io/developer/1885039771) | [JACOB COX](https://appshunter.io/developer/1785798264) |

## 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


### Caffle

[App page](https://appshunter.io/ios/app/caffle-caffeine-tracker/id6782743868)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Caffy Pro Weekly | $9.99 | per 7 days |
| Caffy Pro Yearly | $49.99 | per year |
| Caffy Pro Lifetime | $49.99 | one-time |


## Frequently asked questions

### Is Caffeine Curve free?

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

### Is Caffle free?

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

### Do Caffeine Curve or Caffle have ads?

Neither Caffeine Curve nor Caffle shows ads.

### Which is updated more often, Caffeine Curve or Caffle?

Caffeine Curve ships an update fortnightly, and Caffle monthly. Most recently, Caffeine Curve was updated on October 10, 2026 and Caffle on September 27, 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.*