Skip to content

← All apps

LabConstrictor Playground

Check that a computer, an installation and its GPU are in order, and that every LabConstrictor feature works.

Utilitynapari plugin: experimentalFiji plugin: experimentalQuPath plugin: experimentalTesting

LabConstrictor-Playground

About

Press "Check everything" to get a readout of your machine, GPU, PyTorch, a short benchmark and the internet connection, plus a report you can attach to an issue. Developers use its tools as a fixed set of cases for the napari, Fiji and QuPath bridge.

Works with

The authors say it works with:

  • Run a small test on a device: the device chosen in a dropdown (cpu, cuda:0, mps, whatever PyTorch can use here)
  • Feature tour: an image, or none to use a built-in demo image
  • Look inside a file (a text or JSON file) or summarise a table (a CSV)
  • Count the pixels above a level (a level that another setting switches on)
  • Area of the bright region (needs the pixel size, never guesses it)
  • Align the centres of two images (returns a 3x3 transform)

Produces

The authors say it produces:

  • A readout with a tick, a warning or a cross per layer, with what to do beside each cross
  • report.json (to attach to an issue) and summary.txt, plus benchmark.png when there is a benchmark
  • Make test data: small files made from a seed (a 3-channel image, an RGB image, labels, a time-lapse, a table of points)

Get it on your computer

Install the app on your own computer: download the installer for your system, and the steps for that system open below the buttons. You do this once; installing needs an internet connection, because the installer downloads the app's Python packages.

v0.0.6 · 12 November 2026 · files come from github.com/CellMigrationLab/LabConstrictor-Playground/releases

Windows

Windows installer313.7 MB · .exe

Installers built with LabConstrictor are not code-signed yet, so Windows may warn you. Run files only from this app's GitHub release. See the Windows steps.

macOS

Apple Silicon (M1 or later)189.1 MB · .pkg

Not sure which? Open the Apple menu, then About This Mac: Intel means Intel, M1 or later means Apple Silicon. If macOS refuses to open it, see the macOS steps.

Linux

Linux installer224.0 MB · .sh

Needs a terminal. Run it with: bash <file name>. See the Linux steps.

How to install on Windows
  1. Download the .exe file and double-click it.

  2. If Windows shows "Windows protected your PC", click "More info" and then "Run anyway". The installers are not code-signed yet.

    Windows protected your PC: click More info, then Run anyway

  3. Follow the on-screen prompts. Launch the app from the Start Menu or your desktop.

How to install on macOS
  1. Choose your file: open the Apple menu, then About This Mac. If the Chip or Processor says Intel, download the Intel installer; if it says M1, M2 or similar, download the Apple Silicon one.
  2. Double-click the .pkg file. If macOS refuses to open it, go to System Settings, Privacy & Security, scroll down to the message about the package and click "Open Anyway" (it appears only after you tried to open the file once). If you do not see it, try opening the file again, then check this page again.
  3. Follow the prompts (we recommend "Install only for me"). Launch the app from your Applications folder.
How to install on Linux
  1. Download the .sh file.
  2. Open a terminal in the download folder and run bash followed by the name of the file you downloaded, for example: bash MyApp-0.1.0-Linux-x86_64.sh
  3. Follow the prompts, then launch the app from your applications menu.

All systems, with pictures: Install an app.

Using it

  1. Install it like any LabConstrictor app and press Check everything
  2. Read the answer: a tick is fine, a warning works but something will bite later, a cross is broken and the line below says what to do
  3. Attach report.json to an issue
  4. The tools also appear in napari (Plugins > LabConstrictor tools) and Fiji (Plugins > LabConstrictor > LabConstrictor Tools...)

For any LabConstrictor desktop app: after installing, open the app from the Start menu (Windows), the Applications folder (macOS) or your applications menu (Linux). A terminal window opens with it: keep it open while you work. Its Welcome notebook lists the app's notebooks; the notebook usage guide shows how to work with it.

Read more: README on GitHub.

Limitations

The authors say:

  • OpenCL on macOS is deprecated by Apple, and ROCm (AMD) works on Linux only
  • This first version checks PyTorch only; TensorFlow is checked inside the apps that use it

All downloads

Every installer of version 0.0.6 (5 files, with checksums)

Released 12 November 2026. Files come straight from the app's GitHub release.

Installers of the latest release
SystemFormatSizeFileSHA-256 (from GitHub)
Linux 64-bit (x86_64).sh224.0 MBLabConstrictorPlayground-0.0.6-Linux-x86_64.sh480b3298aab76a08d583c0877480d712f5e414850efb1bb56b0e3fca1767b941
macOS (Apple Silicon).pkg189.1 MBLabConstrictorPlayground-0.0.6-MacOSX-arm64.pkg26709eccf181ef9b8e82e59e4277a7c36f256a10805aacd6e6d7fc2c47f30e9f
macOS (Apple Silicon).sh189.8 MBLabConstrictorPlayground-0.0.6-MacOSX-arm64.sh89a943bc2ca33b14dad5257dc8594133990f962cbe1b518de41e9501c06a9fe6
Windows 64-bit (Intel/AMD, x86_64).exe313.7 MBLabConstrictorPlayground-0.0.6-Windows-x86_64.exef4b2df9dbcb79a2a7d3ce61c4e8d13eecf7dafc072a919a76eaf0def0d8040e7
Windows 64-bit (Intel/AMD, x86_64).msi312.9 MBLabConstrictorPlayground-0.0.6-Windows-x86_64.msi3247214dfcc03823c7066bd1255ff11dbef8e65948d9be5d7230e550886d8658

Details

Kind
Utility
Development status
Available
Latest release
v0.0.6 · 12 November 2026
License
MIT
Repository owner
CellMigrationLab
Also in (plugins)
napari plugin: experimental Fiji plugin: experimental QuPath plugin: experimental
Topics
diagnostics, testing
Links
Report a problem

Edit this page on GitHub