# Iron Revolution vs Drip

The clearest difference is in-app purchases: Iron Revolution at none against Drip's 2. Iron Revolution also leads on device support (4 vs 2). Drip's advantage is update cadence (fortnightly vs every 2 months). On price, ads and iOS requirement there is nothing between them.

Both are free to download. Drip sells 2 in-app purchases, starting at $2.99 per month. Iron Revolution asks for nothing beyond the download.

Iron Revolution ships an update every 2 months, Drip fortnightly. The most recent releases landed on September 21, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Iron Revolution | Drip |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (3 ratings)](https://appshunter.io/ios/app/drip-caffeine-tracker/id6784275555/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Fortnightly** |
| Monetization | — | Freemium |
| Size | 191 MB | 81 MB |
| Requires iOS | **15.5** | 16.4 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [Iron Revolution LLC](https://appshunter.io/developer/1896596936) | [Walsh Costigan](https://appshunter.io/developer/1839074599) |

## What reviewers say

### Iron Revolution

[App page](https://appshunter.io/ios/app/iron-revolution/id6768696063)

**Features:** Apple Wallet, Apple Watch app

**In-app purchases:** none


### Drip

[App page](https://appshunter.io/ios/app/drip-caffeine-tracker/id6784275555)

Effortlessly track your daily caffeine intake using AI-powered logging via photo, voice, or text. Visualize caffeine decay to understand its impact on your sleep and set daily limits to manage your consumption. Gain insights into your habits and stay motivated with progress tracking.

**Highlights:** AI-powered logging (photo, voice, text), Caffeine decay chart, Daily caffeine limit setting, Track all caffeine sources, Custom drinks and partial servings, Home screen widget, Weekly insights and patterns

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly premium access | $2.99 | per month |
| Yearly premium access | $9.99 | per year |


## Frequently asked questions

### Is Iron Revolution free?

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

### Is Drip free?

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

### Do Iron Revolution or Drip have ads?

Neither Iron Revolution nor Drip shows ads.

### Which is updated more often, Iron Revolution or Drip?

Iron Revolution ships an update every 2 months, and Drip fortnightly. Most recently, Iron Revolution was updated on September 21, 2026 and Drip on October 1, 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.*