# Caffeine Clock vs Sniffly

The clearest difference is in-app purchases: Sniffly at none against Caffeine Clock's 2. Sniffly also leads on device support (3 vs 1). On price, update cadence, ads and iOS requirement there is nothing between them.

Both are free to download. Caffeine Clock sells 2 one-off in-app purchases. Sniffly asks for nothing beyond the download.

Caffeine Clock ships an update weekly, Sniffly every 11 days. The most recent releases landed on October 20, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | Caffeine Clock | Sniffly |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (27 ratings)](https://appshunter.io/ios/app/caffeine-clock-track-caffeine/id6504160396/reviews)** | — |
| Number of ratings | **27** | — |
| Positive reviews | 80.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Weekly** | Every 11 days |
| Monetization | Free | — |
| Size | 121 MB | 31 MB |
| Requires iOS | 16.4 | **15.1** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [ANTONIN WINGENDER](https://appshunter.io/developer/1751178342) | [Christian Wehle](https://appshunter.io/developer/1885553418) |

## What reviewers say

### Caffeine Clock

[App page](https://appshunter.io/ios/app/caffeine-clock-track-caffeine/id6504160396)

This app helps you track your caffeine intake and understand its impact on your sleep. It models caffeine absorption and half-life to provide a clear view of your current and projected levels, allowing you to plan your consumption for better rest.

**Highlights:** Caffeine absorption and half-life modeling, Real-time caffeine level tracking, Interactive home screen widgets, Sleep-aware insights and bedtime planning, Extensive drink database with custom options, Daily caffeine threshold alerts

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove ads | $4.99 | one-time |
| Remove Ads | $9.99 | one-time |


### Sniffly

[App page](https://appshunter.io/ios/app/sniffly/id6760657704)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Caffeine Clock free?

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

### Is Sniffly free?

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

### Do Caffeine Clock or Sniffly have ads?

Neither Caffeine Clock nor Sniffly shows ads.

### Which is updated more often, Caffeine Clock or Sniffly?

Caffeine Clock ships an update weekly, and Sniffly every 11 days. Most recently, Caffeine Clock was updated on October 20, 2026 and Sniffly on October 5, 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.*