# 認知保護王 vs unitCalc

The clearest difference is iOS requirement: unitCalc at 15.0 against 認知保護王's 17.1. 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.

認知保護王 ships an update fortnightly, unitCalc monthly. The most recent releases landed on October 13, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | 認知保護王 | unitCalc |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Monthly |
| Size | 147 MB | 1 MB |
| Requires iOS | 17.1 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [YIZE LIAO](https://appshunter.io/developer/1511365129) | [培祐 黃](https://appshunter.io/developer/1053411333) |

## What reviewers say

### 認知保護王

[App page](https://appshunter.io/ios/app/id1601522643)

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

**In-app purchases:** none


### unitCalc

[App page](https://appshunter.io/ios/app/unitcalc/id6445979881)

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

**In-app purchases:** none


## Frequently asked questions

### Is 認知保護王 free?

認知保護王 is free to download, with no in-app purchases.

### Is unitCalc free?

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

### Do 認知保護王 or unitCalc have ads?

Neither 認知保護王 nor unitCalc shows ads.

### Which is updated more often, 認知保護王 or unitCalc?

認知保護王 ships an update fortnightly, and unitCalc monthly. Most recently, 認知保護王 was updated on October 13, 2026 and unitCalc on October 24, 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.*