# UpUpFrog vs 卡记Kaji

The clearest difference is update cadence: 卡记Kaji at every 5 days against UpUpFrog's every 9 days. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. UpUpFrog sells 2 in-app purchases, starting at $0.99 per month and 卡记Kaji sells 2 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

UpUpFrog ships an update every 9 days, 卡记Kaji every 5 days. The most recent releases landed on September 9, 2026 and September 28, 2026 respectively.

## The numbers

| Metric | UpUpFrog | 卡记Kaji |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 9 days | **Every 5 days** |
| Size | 2 MB | 8 MB |
| Requires iOS | **17.0** | 18.0 |
| Devices | iPhone, iPad | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [鹏 陈](https://appshunter.io/developer/1846736356) | [Beijing Ruhong Technology Co., Ltd.](https://appshunter.io/developer/1882230342) |

## What reviewers say

### UpUpFrog

[App page](https://appshunter.io/ios/app/upupfrog/id6762909244)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| UpUpFrog Pro Monthly | $0.99 | per month |
| UpUpFrog Pro Yearly | $5.99 | per year |


### 卡记Kaji

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

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

**In-app purchases (2)**

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


## Frequently asked questions

### Is UpUpFrog free?

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

### Is 卡记Kaji free?

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

### Do UpUpFrog or 卡记Kaji have ads?

Neither UpUpFrog nor 卡记Kaji shows ads.

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

UpUpFrog ships an update every 9 days, and 卡记Kaji every 5 days. Most recently, UpUpFrog was updated on September 9, 2026 and 卡记Kaji on September 28, 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.*