# Act Four vs Proof

The clearest difference is in-app purchases: Proof at none against Act Four's 3. Proof 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. Act Four sells 3 in-app purchases, starting at $3.99 per month. Proof asks for nothing beyond the download.

Act Four ships an update every 8 days, Proof every 2 weeks. The most recent releases landed on October 9, 2026 and September 27, 2026 respectively.

## The numbers

| Metric | Act Four | Proof |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (17 ratings)](https://appshunter.io/ios/app/act-four/id6473959855/reviews)** | — |
| Number of ratings | **17** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 8 days** | Every 2 weeks |
| Monetization | Free with in-app purchases | — |
| Size | 4 MB | 2 MB |
| Requires iOS | 16.0 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [AIV, LLC](https://appshunter.io/developer/1693494613) | [Shaun Ehrhart](https://appshunter.io/developer/1895283251) |

## What reviewers say

### 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 |


### Proof

[App page](https://appshunter.io/ios/app/proof-compare-prices/id6763367757)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Act Four free?

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

### Is Proof free?

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

### Do Act Four or Proof have ads?

Neither Act Four nor Proof shows ads.

### Which is updated more often, Act Four or Proof?

Act Four ships an update every 8 days, and Proof every 2 weeks. Most recently, Act Four was updated on October 9, 2026 and Proof on September 27, 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.*