# CrimsonZip vs Project Athlete

The clearest difference is update cadence: CrimsonZip at every 3 weeks against Project Athlete's every 2 months. Project Athlete's advantage is device support (4 vs 1). On price, ads, in-app purchases 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.

CrimsonZip ships an update every 3 weeks, Project Athlete every 2 months. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | CrimsonZip | Project Athlete |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 2 months |
| Size | 54 MB | 193 MB |
| Requires iOS | 16.4 | **15.1** |
| Devices | iPhone | **iPhone, iPad, iPod, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Harvard University](https://appshunter.io/developer/382088726) | [Project Athlete Limited](https://appshunter.io/developer/1867534179) |

## What reviewers say

### CrimsonZip

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

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

**In-app purchases:** none


### Project Athlete

[App page](https://appshunter.io/ios/app/project-athlete/id6757542616)

**Features:** Apple Wallet, Apple Watch app

**In-app purchases:** none


## Frequently asked questions

### Is CrimsonZip free?

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

### Is Project Athlete free?

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

### Do CrimsonZip or Project Athlete have ads?

Neither CrimsonZip nor Project Athlete shows ads.

### Which is updated more often, CrimsonZip or Project Athlete?

CrimsonZip ships an update every 3 weeks, and Project Athlete every 2 months. Most recently, CrimsonZip was updated on October 30, 2026 and Project Athlete on October 31, 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.*