Instant Plaque Counts
Turn a photo of your plates into accurate plaque counts and titres in seconds.
AI-powered plaque counting Count plaques in seconds, not minutes.
OnePetri uses on-device AI to turn a photo of your plates into accurate plaque counts and titres — no internet, no data leaving your phone.
Available now, $0.99 CAD
Built for the microbiology bench
Purpose-built for microbiologists — computer vision that's fast, accurate, and private by design.
On-Device Processing
Every image is analyzed entirely on your device. Nothing is uploaded to the cloud — your images stay yours.
Every Plaque, Every Morphology
Trained on plaques of every shape, size, and turbidity, OnePetri reliably detects clear and turbid plaques alike.
State-of-the-Art Detection
A YOLOv5 convolutional neural network delivers high accuracy and precision while keeping detection times to a minimum.
Continuously Improving
New assays and refined models ship regularly, so OnePetri keeps getting faster and more accurate over time.
Works Anywhere, Offline
No connection required — OnePetri runs fully offline. Internet access is only needed to download app updates.
Trained on Real-World Data
OnePetri was trained on a diverse image set from HHMI's SEA-PHAGES program, whose support made this project possible.
Free and Open Source
OnePetri is fully open source. Explore the code on GitHub and contribute to the project.
Ready to accelerate your assays?
Download OnePetri on the App Store, or dive into the open-source code on GitHub.