# Kleen AI vs CalSpace

The clearest difference is ads: Kleen AI at none against CalSpace's shown. CalSpace's advantage is update cadence (every 4 days vs every 9 days). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Kleen AI sells 5 in-app purchases, starting at $7.99 per 7 days and CalSpace sells 2 in-app purchases, starting at $5.99 per month. Whichever you choose, the download price is not the number that matters.

Kleen AI ships an update every 9 days, CalSpace every 4 days. The most recent releases landed on October 23, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Kleen AI | CalSpace |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 9 days | **Every 4 days** |
| Size | 33 MB | 125 MB |
| Requires iOS | **16.2** | 17.6 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 12+ | 9+ |
| Developer | [VYN LABS](https://appshunter.io/developer/1789285136) | [CALSPACE PTE. LTD.](https://appshunter.io/developer/6805762404) |

## What reviewers say

### Kleen AI

[App page](https://appshunter.io/ios/app/kleen-ai/id6740262061)

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| KleenWeek | $7.99 | per 7 days |
| Kleen Monthly | $8.99 | per month |
| Kleen AI  Final Discount | $29.99 | per year |
| Calzy Discount | $32.99 | per year |
| Kleen AI Premium Yearly | $39.99 | per year |


### CalSpace

[App page](https://appshunter.io/ios/app/calspace/id6762625662)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| CalSpace Premium Monthly | $5.99 | per month |
| CalSpace Premium Annual | $49.99 | per year |


## Frequently asked questions

### Is Kleen AI free?

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

### Is CalSpace free?

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

### Do Kleen AI or CalSpace have ads?

CalSpace shows ads; Kleen AI does not.

### Which is updated more often, Kleen AI or CalSpace?

Kleen AI ships an update every 9 days, and CalSpace every 4 days. Most recently, Kleen AI was updated on October 23, 2026 and CalSpace 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.*