# Hiroia Smart Scale vs Act Four

The clearest difference is in-app purchases: Hiroia Smart Scale at none against Act Four's 3. Hiroia Smart Scale also leads on iOS requirement (12.0 vs 16.0). Act Four's advantage is update cadence (every 8 days vs every 3 months) and chart position (#196 vs unranked). On price, 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. Hiroia Smart Scale asks for nothing beyond the download.

Hiroia Smart Scale ships an update every 3 months, Act Four every 8 days. The most recent releases landed on September 15, 2026 and September 7, 2026 respectively.

## The numbers

| Metric | Hiroia Smart Scale | Act Four |
| --- | --- | --- |
| 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 | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 8 days** |
| Monetization | — | Free with in-app purchases |
| Best chart rank | — | **#196** |
| Size | 20 MB | 4 MB |
| Requires iOS | **12.0** | 16.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [HIROIA Communications Pte. Ltd.](https://appshunter.io/developer/1476636378) | [AIV, LLC](https://appshunter.io/developer/1693494613) |

## What reviewers say

### Hiroia Smart Scale

[App page](https://appshunter.io/ios/app/hiroia-smart-scale/id1616596477)

**Features:** macOS Compatibility

**In-app purchases:** none


### Act Four

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

**Currently charting:** #196 Top Grossing · Food & Drink (US App Store)

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 Hiroia Smart Scale free?

Hiroia Smart Scale is free to download, with no in-app purchases.

### Is Act Four free?

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

### Do Hiroia Smart Scale or Act Four have ads?

Neither Hiroia Smart Scale nor Act Four shows ads.

### Which is updated more often, Hiroia Smart Scale or Act Four?

Hiroia Smart Scale ships an update every 3 months, and Act Four every 8 days. Most recently, Hiroia Smart Scale was updated on September 15, 2026 and Act Four on September 7, 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.*