# 瞳护 vs 卡记Kaji

The clearest difference is in-app purchases: 瞳护 at none against 卡记Kaji's 2. 瞳护 also leads on update cadence (every 2 days vs every 5 days) and iOS requirement (15.6 vs 18.0). 卡记Kaji's advantage is ads (none vs shown). On price and device support there is nothing between them.

Both are free to download. 卡记Kaji sells 2 in-app purchases, starting at $0.99 per month. 瞳护 asks for nothing beyond the download.

瞳护 ships an update every 2 days, 卡记Kaji every 5 days. The most recent releases landed on October 31, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | 瞳护 | 卡记Kaji |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 2 days** | Every 5 days |
| Size | 80 MB | 8 MB |
| Requires iOS | **15.6** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [鸣优 徐](https://appshunter.io/developer/1874541221) | [Beijing Ruhong Technology Co., Ltd.](https://appshunter.io/developer/1882230342) |

## What reviewers say

### 瞳护

[App page](https://appshunter.io/ios/app/id6758606015)

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

**In-app purchases:** none


### 卡记Kaji

[App page](https://appshunter.io/ios/app/kaji/id6776541780)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support, iPhone Duo support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Kaji Pro | $0.99 | per month |
| Kaji lifetime | $9.99 | one-time |


## Frequently asked questions

### Is 瞳护 free?

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

### Is 卡记Kaji free?

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

### Do 瞳护 or 卡记Kaji have ads?

瞳护 shows ads; 卡记Kaji does not.

### Which is updated more often, 瞳护 or 卡记Kaji?

瞳护 ships an update every 2 days, and 卡记Kaji every 5 days. Most recently, 瞳护 was updated on October 31, 2026 and 卡记Kaji on November 5, 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.*