Download Chessigma for Mac, Windows, Linux, iOS and Android

Windows says it “protected your PC”. Is something wrong?: No. Windows shows this for any app it has not seen many times before. The warning is triggered by the file being new, not by anything in it. Click More info, then Run anyway. Your browser may also ask first: choose Keep.
Why does it say “Unknown publisher”?: The Windows builds are not code-signed yet, so Windows cannot show our name. The macOS build is signed and notarised by Apple, which is why it installs without a word. A Windows certificate is on the way, and the warning disappears with it.
Which Linux file do I want?: .deb on Debian, Ubuntu and derivatives. .tar.gz on anything else. Extract it and run the chessigma binary inside.
Is the desktop app the full Chessigma?: Yes. Same account, and everything is included: game review, puzzles, the opening trainer and Supercoach. It runs the live site in its own window, so it is never out of date and there is nothing extra to keep in sync.
Does my Supercoach subscription work in the phone app?: No, and nothing is wrong with your account. The mobile app is deliberately just game review and the opening trainer, with no sign-in. Everything you pay for lives on the web and on desktop, where your subscription works exactly as it always has.
How do I update the desktop app?: Download it again from this page and install over the top; your session and settings are kept. There is no automatic updater yet, so it is worth checking back after a big release.