# Act Four vs VibrFlow

The clearest difference is update cadence: VibrFlow at daily against Act Four's every 8 days. VibrFlow also leads on device support (3 vs 1). On price, ads, in-app purchases 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 and VibrFlow sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Act Four ships an update every 8 days, VibrFlow daily. The most recent releases landed on September 22, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Act Four | VibrFlow |
| --- | --- | --- |
| 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 | Yes |
| Ads | No | No |
| Update frequency | Every 8 days | **Daily** |
| Monetization | Free with in-app purchases | — |
| Size | 4 MB | 51 MB |
| Requires iOS | 16.0 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [AIV, LLC](https://appshunter.io/developer/1693494613) | [Kaan Yaren](https://appshunter.io/developer/1890483290) |

## 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 |


### VibrFlow

[App page](https://appshunter.io/ios/app/vibrflow-auto-espresso-timer/id6763392050)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Vibrflow Premium Monthly | $0.99 | one-time |
| Vibrflow Premium Lifetime | $9.99 | one-time |


## Frequently asked questions

### Is Act Four free?

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

### Is VibrFlow free?

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

### Do Act Four or VibrFlow have ads?

Neither Act Four nor VibrFlow shows ads.

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

Act Four ships an update every 8 days, and VibrFlow daily. Most recently, Act Four was updated on September 22, 2026 and VibrFlow 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.*