# doCheck vs HC Calibrator

The clearest difference is iOS requirement: HC Calibrator at 13 against doCheck's 15.0. 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.

doCheck ships an update monthly, HC Calibrator every 5 weeks. The most recent releases landed on October 5, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | doCheck | HC Calibrator |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 5 weeks |
| Size | 3 MB | 29 MB |
| Requires iOS | 15.0 | **13** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Suzhou Teknect Co.,Ltd.](https://appshunter.io/developer/1239165278) | [杭州士腾科技有限公司](https://appshunter.io/developer/1679259852) |

## What reviewers say

### doCheck

[App page](https://appshunter.io/ios/app/docheck/id1239165279)

**Features:** macOS Compatibility

**In-app purchases:** none


### HC Calibrator

[App page](https://appshunter.io/ios/app/hc-calibrator/id6473139016)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is doCheck free?

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

### Is HC Calibrator free?

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

### Do doCheck or HC Calibrator have ads?

Neither doCheck nor HC Calibrator shows ads.

### Which is updated more often, doCheck or HC Calibrator?

doCheck ships an update monthly, and HC Calibrator every 5 weeks. Most recently, doCheck was updated on October 5, 2026 and HC Calibrator 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.*