# PlaqSeg — Phage Plaque Segmentation Tool

> Phage Plaque Segmentation Tool (iPhone/iPad app by University of Southampton.)

- Source: https://appshunter.io/ios/app/plaqseg/id6755306120 (this page in markdown: same URL + `.md`)
- Developer: [University of Southampton](https://appshunter.io/developer/415456277)
- Category: Utilities, Medical
- Price: Free
- Age rating: 4+
- Requires: iOS 15.1 · 139 MB
- Languages: American English
- Released: 2026-03-23
- Data updated: 2026-05-15
- User reviews in markdown: https://appshunter.io/ios/app/plaqseg/id6755306120/reviews.md

## What is PlaqSeg?

Transform your bacteriophage research with PlaqSeg - the intelligent plaque detection and counting app designed for microbiology labs and phage researchers.

Key Features:

Automated Plaque Detection
• Advanced computer vision algorithms instantly identify and segment plaques
• Works directly from your phone camera or photo library
• Results in seconds, not minutes

ML Classification
• Trained CNN model filters false positives with 93%+ accuracy
• Adjustable confidence thresholds for precision control
• Continuously improving detection quality

Detailed Analytics
• Accurate plaque counting and statistics
• Size distribution analysis (area measurements)
• Circularity scoring for morphology studies
• PFU calculator for titer calculations

Export & Share
• Generate comprehensive CSV reports
• Export annotated images with overlay visualizations
• Complete analysis history tracking
• Easy data sharing for publications

Professional Controls
• Customizable detection parameters
• Manual editing: add or exclude plaques
• Fine-tune filters for your specific assays
• Works offline - no internet required

Tips for Best Results:
• Photograph petri dishes directly (not screens)
• Use dark, non-reflective backgrounds
• Ensure good, even lighting
• Hold camera parallel to dish surface

Perfect for:
• Phage therapy research
• Bacteriophage quantification
• Microbiology labs and courses
• Quality control in phage production
• Environmental phage studies

Developed by Leo Skingley at The Phage Collection Project

PlaqSeg is a research tool only; verify all results independently and do not use for clinical or diagnostic purposes.


## Version history (last 3 releases)

### 1.2.4 — 2026-04-17

Fixed a bug where sometimes the final image result would not load properly.

### 1.2.1 — 2026-03-24

Bug fixes and improvments

### 1.2 — 2026-03-23

No release notes.

## More apps by University of Southampton

- [MySouthampton](https://appshunter.io/ios/app/mysouthampton/id469922871)
- [Healthy Mind](https://appshunter.io/ios/app/healthy-mind/id1169418730)
- [UoS Sport](https://appshunter.io/ios/app/uos-sport/id1529402232)
- [My UoS Career Hub](https://appshunter.io/ios/app/my-uos-career-hub/id1543189610)
- [XB](https://appshunter.io/ios/app/xb/id1543583158)
- [Capaciflector](https://appshunter.io/ios/app/capaciflector/id1543589112)

All apps by University of Southampton: https://appshunter.io/developer/415456277

## Related topics

[plaqseg](https://appshunter.io/ios/topics/plaqseg)

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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 2026-05-15.*