FIG. 01 — SAMPLE PETRILYA-001

Count colonies bacteria yeast mold pathogens on a Petri dish in seconds, not hours.

Drop in a phone photo. Petrilya finds every colony, gives you the count, and exports a clean report. Open-source desktop app. No code, no cloud, no GPU required.

Download for Windows Windows 10 / 11 · 350 MB · v0.0.1 View source on GitHub

AGPL-3.0 No cloud No GPU required Cellpose under the hood

Petri dish with colored colony detections
200 colonies · 1.18 s
PROTOCOL

How it works

Three clicks from a photo on your phone to a report on your director's desk.

01 INPUT

Drop the image in

Drag a JPG, PNG, or TIFF from your microscope, phone, or scanner into the window. Or process a whole folder at once with batch mode.

Formats
JPG · PNG · TIFF · BMP
Mode
Single · Batch
Max size
16K × 16K
02 PROCESS

Click Analyze

Cellpose under the hood. Pretrained models segment every colony, no settings to tweak. Each one gets an ID, area, diameter, eccentricity.

Engine
cellpose-cyto3
Compute
CUDA · CPU · MPS
Time
~1.2 s / 1K²
03 OUTPUT

Export the report

One-page PDF with preview, histogram, and table. CSV for spreadsheets. JSON manifest with SHA-256 and parameters for reproducibility.

Formats
PDF · CSV · JSON
Integrity
SHA-256
Schema
v1 · stable
CAPABILITIES

What it does

AI segmentation

Powered by Cellpose under the hood. Pretrained models recognise colonies of different shapes and sizes without any setup or parameter tuning.

Drag & drop

Drop a JPG, PNG, or TIFF straight from your phone or microscope.

Manual fixes

Erase misdetections with a click, paint missed colonies with a brush.

Zoom & pan

Wheel-zoom anywhere, Space-drag to pan, F to fit.

Real units, not pixels

Set micrometers-per-pixel and your areas come out in µm², diameters in µm — drop them straight into your methods section.

Publication exports

One-page PDF with preview, histogram, table. CSV. JSON manifest.

Batch a whole folder

Point at a folder, get a CSV, PDF and JSON per image plus a sweeping summary.csv. Walk away while it works.

Runs on your laptop

Windows, macOS, Linux. CUDA when you have it, CPU when you don't.

Yours, locally

No telemetry, no accounts, no upload. Samples never leave the box.

GET STARTED

Download

Petrilya is in pre-alpha. A Windows installer is ready — for macOS and Linux, build from source.

Download for Windows All releases Report an issue

Build from source — for macOS, Linux, or development:

git clone https://github.com/petrilya-app/petrilya-core.git
cd petrilya-core
python -m venv .venv
source .venv/bin/activate   # Windows: .\.venv\Scripts\Activate.ps1
pip install -e .
petrilya-ui
ENTERPRISE

For labs and pharma

Petrilya is dual-licensed: AGPL-3.0 for the open-source build, and a commercial license for organisations that need on-premise deployment without copyleft obligations — including air-gapped lab networks and GMP-relevant workflows.

Interested in a pilot, custom integration with your LIMS, or training data? iliarogogvykh@gmail.com