# 壤逸誌SOW vs Pai.ACT

The clearest difference is iOS requirement: Pai.ACT at 11.0 against 壤逸誌SOW's 15.1. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

壤逸誌SOW ships an update every 3 weeks, Pai.ACT every 4 weeks. The most recent releases landed on September 10, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | 壤逸誌SOW | Pai.ACT |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 4 weeks |
| Size | 162 MB | 185 MB |
| Requires iOS | 15.1 | **11.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Lab Viso Limited](https://appshunter.io/developer/1375884405) | [The Chinese University of Hong Kong](https://appshunter.io/developer/369070876) |

## What reviewers say

### 壤逸誌SOW

[App page](https://appshunter.io/ios/app/sow/id6448770877)

**Features:** macOS Compatibility

**In-app purchases:** none


### Pai.ACT

[App page](https://appshunter.io/ios/app/paiact/id6462592721)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 壤逸誌SOW free?

壤逸誌SOW is free to download, with no in-app purchases.

### Is Pai.ACT free?

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

### Do 壤逸誌SOW or Pai.ACT have ads?

Neither 壤逸誌SOW nor Pai.ACT shows ads.

### Which is updated more often, 壤逸誌SOW or Pai.ACT?

壤逸誌SOW ships an update every 3 weeks, and Pai.ACT every 4 weeks. Most recently, 壤逸誌SOW was updated on September 10, 2026 and Pai.ACT on September 20, 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.*