# Five Aggregates Are Empty vs 凱琳

The clearest difference is update cadence: Five Aggregates Are Empty at every 2 days against 凱琳's every 2 weeks. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Five Aggregates Are Empty sells 1 one-off in-app purchase and 凱琳 sells 2 in-app purchases, starting at $5.99 per month. Whichever you choose, the download price is not the number that matters.

Five Aggregates Are Empty ships an update every 2 days, 凱琳 every 2 weeks. The most recent releases landed on October 13, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | Five Aggregates Are Empty | 凱琳 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 2 days** | Every 2 weeks |
| Size | 46 MB | 65 MB |
| Requires iOS | 17.6 | **17.0** |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [CHIH-SHAN LIU](https://appshunter.io/developer/1470906398) | [Chin YU XUAN](https://appshunter.io/developer/6781631336) |

## What reviewers say

### Five Aggregates Are Empty

[App page](https://appshunter.io/ios/app/five-aggregates-are-empty/id6756183973)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Wholeness | $2.99 | one-time |


### 凱琳

[App page](https://appshunter.io/ios/app/id6804378115)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 凱琳會員 | $5.99 | per month |
| 凱琳會員（年繳） | $39.99 | per year |


## Frequently asked questions

### Is Five Aggregates Are Empty free?

Five Aggregates Are Empty is free to download, with in-app purchases available.

### Is 凱琳 free?

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

### Do Five Aggregates Are Empty or 凱琳 have ads?

Neither Five Aggregates Are Empty nor 凱琳 shows ads.

### Which is updated more often, Five Aggregates Are Empty or 凱琳?

Five Aggregates Are Empty ships an update every 2 days, and 凱琳 every 2 weeks. Most recently, Five Aggregates Are Empty was updated on October 13, 2026 and 凱琳 on October 19, 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.*