# CaffLog vs Caffeine mg

The clearest difference is ads: Caffeine mg at none against CaffLog's shown. CaffLog's advantage is device support (3 vs 1) and iOS requirement (15.0 vs 18.0). On price, update cadence and in-app purchases there is nothing between them.

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

Both ship on a similar rhythm, roughly weekly. The most recent releases landed on September 10, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | CaffLog | Caffeine mg |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Weekly | Weekly |
| Size | 70 MB | 5 MB |
| Requires iOS | **15.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Haruya Oyama](https://appshunter.io/developer/1803788371) | [kensuke ueda](https://appshunter.io/developer/961845390) |

## What reviewers say

### CaffLog

[App page](https://appshunter.io/ios/app/cafflog-caffeine-tracker/id6745146196)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| CaffLog Premium | $2.99 | per month |


### 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 CaffLog free?

CaffLog 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 CaffLog or Caffeine mg have ads?

CaffLog shows ads; Caffeine mg does not.

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

CaffLog ships an update weekly, and Caffeine mg weekly. Most recently, CaffLog was updated on September 10, 2026 and Caffeine mg on September 20, 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.*