# PAHCVacTracker vs KAI Red

The clearest difference is iOS requirement: PAHCVacTracker at 13.0 against KAI Red's 15.6. 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.

PAHCVacTracker ships an update every 6 weeks, KAI Red monthly. The most recent releases landed on October 2, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | PAHCVacTracker | KAI Red |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Monthly** |
| Size | 123 MB | 91 MB |
| Requires iOS | **13.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Phibro Animal Health Corporation](https://appshunter.io/developer/1396490271) | [H&N International GmbH](https://appshunter.io/developer/1341615702) |

## What reviewers say

### PAHCVacTracker

[App page](https://appshunter.io/ios/app/pahcvactracker/id1458313934)

**Features:** macOS Compatibility

**In-app purchases:** none


### KAI Red

[App page](https://appshunter.io/ios/app/kai-red/id6443526849)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is PAHCVacTracker free?

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

### Is KAI Red free?

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

### Do PAHCVacTracker or KAI Red have ads?

Neither PAHCVacTracker nor KAI Red shows ads.

### Which is updated more often, PAHCVacTracker or KAI Red?

PAHCVacTracker ships an update every 6 weeks, and KAI Red monthly. Most recently, PAHCVacTracker was updated on October 2, 2026 and KAI Red on October 1, 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.*