# TodoKnock vs Hour Mark

The clearest difference is iOS requirement: Hour Mark at 13.0 against TodoKnock's 16.6. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. TodoKnock sells 1 one-off in-app purchase and Hour Mark sells 2 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | TodoKnock | Hour Mark |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 6 days | — |
| Size | 56 MB | 47 MB |
| Requires iOS | 16.6 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Yuichi Sasaki](https://appshunter.io/developer/1831654051) | [Kwangho Kim](https://appshunter.io/developer/1762824000) |

## What reviewers say

### TodoKnock

[App page](https://appshunter.io/ios/app/todoknock-count-your-progress/id6755919383)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $1.99 | one-time |


### Hour Mark

[App page](https://appshunter.io/ios/app/hour-mark/id6757754161)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Montly | $1.99 | per month |
| Premium Yearly | $9.99 | per year |


## Frequently asked questions

### Is TodoKnock free?

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

### Is Hour Mark free?

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

### Do TodoKnock or Hour Mark have ads?

Neither TodoKnock nor Hour Mark shows ads.

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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.*