# CVD Study vs CrimsonZip

The clearest difference is update cadence: CrimsonZip at every 3 weeks against CVD Study's every 15 months. On price, ads, in-app purchases and device support there is nothing between them.

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

CVD Study ships an update every 15 months, CrimsonZip every 3 weeks. The most recent releases landed on November 7, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | CVD Study | CrimsonZip |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 15 months | **Every 3 weeks** |
| Size | 116 MB | 54 MB |
| Requires iOS | **15.0** | 16.4 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Regents of the University of Minnesota](https://appshunter.io/developer/455216626) | [Harvard University](https://appshunter.io/developer/382088726) |

## What reviewers say

### CVD Study

[App page](https://appshunter.io/ios/app/cvd-study/id1611914770)

**Features:** macOS Compatibility

**In-app purchases:** none


### CrimsonZip

[App page](https://appshunter.io/ios/app/crimsonzip/id6504200025)

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

**In-app purchases:** none


## Frequently asked questions

### Is CVD Study free?

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

### Is CrimsonZip free?

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

### Do CVD Study or CrimsonZip have ads?

Neither CVD Study nor CrimsonZip shows ads.

### Which is updated more often, CVD Study or CrimsonZip?

CVD Study ships an update every 15 months, and CrimsonZip every 3 weeks. Most recently, CVD Study was updated on November 7, 2026 and CrimsonZip on October 30, 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.*