# Caffy vs Caffeine mg

The clearest difference is update cadence: Caffeine mg at weekly against Caffy's every 2 weeks. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Caffy sells 3 in-app purchases, starting at $2.99 per 7 days and Caffeine mg sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Caffy ships an update every 2 weeks, Caffeine mg weekly. The most recent releases landed on October 31, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Caffy | Caffeine mg |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/caffy-caffeine-tracker/id6763036774/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Weekly** |
| Monetization | Freemium | — |
| Size | 27 MB | 5 MB |
| Requires iOS | 18.6 | **18.0** |
| Devices | iPhone | iPhone |
| Age rating | 12+ | 4+ |
| Developer | [Irfan Behic TIRPANCI](https://appshunter.io/developer/1895131748) | [kensuke ueda](https://appshunter.io/developer/961845390) |

## What reviewers say

### Caffy

[App page](https://appshunter.io/ios/app/caffy-caffeine-tracker/id6763036774)

Track your caffeine intake and understand its impact on your sleep and productivity. This app uses science-backed models to provide personalized insights into your caffeine levels and when you'll be ready for sleep.

**Highlights:** Real-time caffeine decay curve, Personalized sleep readiness score, Focus window for productivity peaks, AI weekly analysis of caffeine patterns, Caffeine detox programs, Live home screen widgets

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Caffy Premium | $2.99 | per 7 days |
| Caffy Premium | $6.99 | per month |
| Caffy Premium | $29.99 | per year |


### Caffeine mg

[App page](https://appshunter.io/ios/app/caffeine-mg-half-life-tracker/id6763047063)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| カフェインmg Pro | $1.99 | one-time |


## Frequently asked questions

### Is Caffy free?

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

### Is Caffeine mg free?

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

### Do Caffy or Caffeine mg have ads?

Neither Caffy nor Caffeine mg shows ads.

### Which is updated more often, Caffy or Caffeine mg?

Caffy ships an update every 2 weeks, and Caffeine mg weekly. Most recently, Caffy was updated on October 31, 2026 and Caffeine mg on October 25, 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.*