# Optimal Coffee Extraction vs Act Four

The clearest difference is rating: Act Four at 5.0 against Optimal Coffee Extraction's 4.3. Act Four also leads on review sentiment (100% vs 80%) and update cadence (every 8 days vs monthly). Optimal Coffee Extraction's advantage is in-app purchases (none vs 3) and iOS requirement (9.1 vs 16.0). On price, ratings volume, ads and device support there is nothing between them.

Both are free to download. Act Four sells 3 in-app purchases, starting at $3.99 per month. Optimal Coffee Extraction asks for nothing beyond the download.

Act Four holds the better App Store score, 5.0 against 4.3. Both are backed by a comparable volume of ratings — 15 and 17 respectively. Written reviews point the same way: 80% of Optimal Coffee Extraction's written reviews are positive against 100% of Act Four's.

Optimal Coffee Extraction ships an update monthly, Act Four every 8 days. The most recent releases landed on September 29, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Optimal Coffee Extraction | Act Four |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.3 (15 ratings)](https://appshunter.io/ios/app/optimal-coffee-extraction/id1295689736/reviews) | **[5.0 (17 ratings)](https://appshunter.io/ios/app/act-four/id6473959855/reviews)** |
| Number of ratings | 15 | **17** |
| Positive reviews | 80.0% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 8 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 31 MB | 4 MB |
| Requires iOS | **9.1** | 16.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Andrew Daniels](https://appshunter.io/developer/1295689735) | [AIV, LLC](https://appshunter.io/developer/1693494613) |

## What reviewers say

### Optimal Coffee Extraction

[App page](https://appshunter.io/ios/app/optimal-coffee-extraction/id1295689736)

This app helps coffee enthusiasts and professionals scientifically measure coffee extraction. It uses modern tools and coffee specifications to guide users towards the perfect cup, aligning with SCA guidelines for cafes and roasters.

**Highlights:** Measure coffee extraction scientifically, Align with SCA guidelines, Calculate dose, time, and output, Support for espresso and filter coffee, Beautiful and functional design, Useful for cafes and roasters

**Features:** macOS Compatibility

**In-app purchases:** none


### Act Four

[App page](https://appshunter.io/ios/app/act-four/id6473959855)

Learn to brew perfect espresso with video guidance and taste analysis. The app tracks your brew automatically, helping you adjust your machine and recipe for your ideal cup. Designed for both beginners and experienced baristas.

**Highlights:** Video-guided brewing workflow, Speed and taste analysis, Machine and grinder adjustment guidance, Automatic recipe tracking, Hands-free operation, Brew Weight and Timing adjustments

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $3.99 | per month |
| Yearly | $29.99 | per year |
| SwitchBot Integration | $19.99 | one-time |


## Frequently asked questions

### Is Optimal Coffee Extraction free?

Optimal Coffee Extraction is free to download, with no in-app purchases.

### Is Act Four free?

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

### Which has better reviews, Optimal Coffee Extraction or Act Four?

Act Four is rated higher. Optimal Coffee Extraction averages 4.3 out of 5 from 15 ratings, while Act Four averages 5.0 from 17 ratings.

### Do Optimal Coffee Extraction or Act Four have ads?

Neither Optimal Coffee Extraction nor Act Four shows ads.

### Which is updated more often, Optimal Coffee Extraction or Act Four?

Optimal Coffee Extraction ships an update monthly, and Act Four every 8 days. Most recently, Optimal Coffee Extraction was updated on September 29, 2026 and Act Four on October 9, 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.*