# tdc. vs Learn the Clock

The clearest difference is ads: tdc. at none against Learn the Clock's shown. tdc. also leads on update cadence (every 2 weeks vs monthly). On price, in-app purchases, device support and iOS requirement there is nothing between them.

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

tdc. ships an update every 2 weeks, Learn the Clock monthly. The most recent releases landed on October 1, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | tdc. | Learn the Clock |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 2 weeks** | Monthly |
| Size | 94 MB | 32 MB |
| Requires iOS | **15.1** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Abdul Majid Shah Bukhari](https://appshunter.io/developer/1896112171) | [Yoshihide Maehama](https://appshunter.io/developer/6801839177) |

## What reviewers say

### tdc.

[App page](https://appshunter.io/ios/app/tdc/id6765877675)

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

**In-app purchases:** none


### Learn the Clock

[App page](https://appshunter.io/ios/app/learn-the-clock-telling-time/id6802304229)

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

**In-app purchases:** none


## Frequently asked questions

### Is tdc. free?

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

### Is Learn the Clock free?

Learn the Clock is free to download, with no in-app purchases.

### Do tdc. or Learn the Clock have ads?

Learn the Clock shows ads; tdc. does not.

### Which is updated more often, tdc. or Learn the Clock?

tdc. ships an update every 2 weeks, and Learn the Clock monthly. Most recently, tdc. was updated on October 1, 2026 and Learn the Clock on October 18, 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.*