DOWNLOAD · EARLY ACCESS 0.3.0 · OCTOBER 2, 2026

Get Spark Chamber

Spark Chamber is free during Early Access and needs no account. It saves your progress on your device, keeps automatic backups, and lets you export it to a file at any time from Settings → Export progress….

Browser

NO INSTALL

Try it right in your browser, with nothing to install.

Open in browser

Linux

SNAP · BETA

Spark Chamber is built and tested on Ubuntu. It installs from the Snap Store (beta channel) and updates automatically.

Get it from the Snap Store

Planned

macOS · later
iPhone and iPad · later
Android · later
Windows · later

Install on Linux

  1. Open the Snap Store page above and click Install, or run this command in a terminal:
  2. Open Spark Chamber from your apps.
  3. Updates install automatically.
sudo snap install spark-chamber --beta

Snap comes with Ubuntu. On other Linux distributions, install snapd first.

Before you start

  • This is Early Access, so expect rough edges. More topics are on the way.
  • Updates keep your progress, and the app keeps automatic backups. To move your progress to another computer, use Settings → Export progress… and Import progress….
  • Found a wrong answer or a bug? Use the Report a problem button in the app.
  • Hands-on builds use only battery or USB power, at 12 V or less. Read the safety notes before you build.

Release notes

0.3.0October 2, 2026
  • Mastered topics now light up in their subject's color, and the links between them light up too.
  • Your progress survives updates. The app keeps rotating backups, restores a damaged save from the newest good copy, and adds Export progress… and Import progress… to Settings.
  • The Bench has a function generator, a two-channel oscilloscope, and a Bode plotter, and you predict the result before each run.
  • Keyboard shortcuts on the Bench place parts, draw wires, and pick instruments.
  • After a fault-finding problem, the Bench can hide a fault for you to find with the meter, in that circuit or your own.
  • The simulator reads SPICE models for diodes, bipolar transistors, and MOSFETs, checked against ngspice.
  • Hints no longer give the answer away, and every topic can now be mastered.

Known limits: the Bench keeps its circuit only until you close the app. A redesigned main screen and final tests for each topic are next.