# Knowlwood vs CMAA CT.

The clearest difference is update cadence: Knowlwood at every 9 days against CMAA CT.'s every 3 months. Knowlwood also leads on iOS requirement (15.1 vs 17.6). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Knowlwood ships an update every 9 days, CMAA CT. every 3 months. The most recent releases landed on October 27, 2026 and November 8, 2026 respectively.

## The numbers

| Metric | Knowlwood | CMAA CT. |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 9 days** | Every 3 months |
| Size | 54 MB | 39 MB |
| Requires iOS | **15.1** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Knowlwood Tennis Club](https://appshunter.io/developer/1751367885) | [CMAACT](https://appshunter.io/developer/1561255232) |

## What reviewers say

### Knowlwood

[App page](https://appshunter.io/ios/app/knowlwood/id6504203417)

**Features:** macOS Compatibility

**In-app purchases:** none


### CMAA CT.

[App page](https://appshunter.io/ios/app/cmaa-ct/id6736707528)

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

**In-app purchases:** none


## Frequently asked questions

### Is Knowlwood free?

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

### Is CMAA CT. free?

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

### Do Knowlwood or CMAA CT. have ads?

Neither Knowlwood nor CMAA CT. shows ads.

### Which is updated more often, Knowlwood or CMAA CT.?

Knowlwood ships an update every 9 days, and CMAA CT. every 3 months. Most recently, Knowlwood was updated on October 27, 2026 and CMAA CT. on November 8, 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.*