# K9 P4

> K9 P4 (iPhone/iPad app by BioMetallics, Inc..)

- Source: https://appshunter.io/ios/app/k9-p4/id1631761862 (this page in markdown: same URL + `.md`)
- Developer: [BioMetallics, Inc.](https://appshunter.io/developer/1040339407)
- Category: Medical
- Price: Free
- Age rating: 4+
- Requires: iOS 12.0 · 8 MB
- Languages: English
- Released: 2022-06-30
- Data updated: 2026-05-17
- User reviews in markdown: https://appshunter.io/ios/app/k9-p4/id1631761862/reviews.md

## What is K9 P4?

App for K9 Quick P4 kit for Quantitation of Progesterone

The user takes a photo of the results obtained from the “K9 Quick P4 kit”, selects the photo and analyzes the results using the “K9 P4” app.

The photo is taken within the “K9 P4” app with the iPhone on the kit box so that there is fixed focal length & controlled lighting.  Taking the correct picture on the kit box is part of the app.  

The “K9  P4” app does image analysis of the Test and Control lines of  a Lateral Flow cassette photo ,   The “K9 P4 ” app  calculates the progesterone concentration of the sample by interpolation of the sample on an internal standard curve.


## Version history (last 3 releases)

### Version 3 (1) — 2022-07-25

fixes low progesterone value calculation

### 2 (1) — 2022-07-11

Better background correction.

### 1 (2) — 2022-06-30

No release notes.

## More apps by BioMetallics, Inc.

- [IgG iAnalyzer](https://appshunter.io/ios/app/igg-ianalyzer/id1084510182)
- [K9 Quick P4](https://appshunter.io/ios/app/k9-quick-p4/id1600589728)
- [P4 K9 Photo](https://appshunter.io/ios/app/p4-k9-photo/id1607682288)

All apps by BioMetallics, Inc.: https://appshunter.io/developer/1040339407

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-05-17.*