# Mark That vs C

The clearest difference is iOS requirement: C at 12.0 against Mark That's 16.0. On price, update cadence, 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.

Mark That ships an update every 5 days, C every 10 days. The most recent releases landed on October 9, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | Mark That | C |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 days** | Every 10 days |
| Size | 1 MB | 56 MB |
| Requires iOS | 16.0 | **12.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Ron Srebro](https://appshunter.io/developer/1249765439) | [Xiamen C-chip Technology Co., Ltd.](https://appshunter.io/developer/1449112327) |

## What reviewers say

### Mark That

[App page](https://appshunter.io/ios/app/mark-that/id1658183260)

**Features:** macOS Compatibility

**In-app purchases:** none


### C

[App page](https://appshunter.io/ios/app/c-ox/id6754757146)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Mark That free?

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

### Is C free?

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

### Do Mark That or C have ads?

Neither Mark That nor C shows ads.

### Which is updated more often, Mark That or C?

Mark That ships an update every 5 days, and C every 10 days. Most recently, Mark That was updated on October 9, 2026 and C on October 5, 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.*