# Clock Drawing Test vs Clock Drawing Test (CDT)

The clearest difference is update cadence: Clock Drawing Test (CDT) at every 10 days against Clock Drawing Test's every 25 months. Clock Drawing Test (CDT) also leads on device support (3 vs 1) and iOS requirement (15.0 vs 18.0). On price, ads and in-app purchases there is nothing between them.

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

Clock Drawing Test ships an update every 25 months, Clock Drawing Test (CDT) every 10 days. The most recent releases landed on September 30, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Clock Drawing Test | Clock Drawing Test (CDT) |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 25 months | **Every 10 days** |
| Size | 13 MB | 8 MB |
| Requires iOS | 18.0 | **15.0** |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [Miguel Schulz](https://appshunter.io/developer/1487957589) | [Glinberg Robotics, LLC](https://appshunter.io/developer/1567954262) |

## What reviewers say

### Clock Drawing Test

[App page](https://appshunter.io/ios/app/clock-drawing-test/id1594273677)

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

**In-app purchases:** none


### Clock Drawing Test (CDT)

[App page](https://appshunter.io/ios/app/clock-drawing-test-cdt/id1643602197)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Clock Drawing Test free?

Clock Drawing Test is free to download, with no in-app purchases.

### Is Clock Drawing Test (CDT) free?

Clock Drawing Test (CDT) is free to download, with no in-app purchases.

### Do Clock Drawing Test or Clock Drawing Test (CDT) have ads?

Neither Clock Drawing Test nor Clock Drawing Test (CDT) shows ads.

### Which is updated more often, Clock Drawing Test or Clock Drawing Test (CDT)?

Clock Drawing Test ships an update every 25 months, and Clock Drawing Test (CDT) every 10 days. Most recently, Clock Drawing Test was updated on September 30, 2026 and Clock Drawing Test (CDT) on October 9, 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.*