Web app
Train in your browser with a Free, Basic or Premium account. Subscription purchases and restores are handled in the mobile apps.
blunder.zone
by chess lovers, for chess lovers
Web, iPhone, iPad and Android
Your training. The same account.
Start free on the web. Solve puzzles from your games, request AI explanations in your chosen language and explore the continuations. See Explain in action.
To continue on another device, sign in to the same Blunderzone account using the same sign-in method. This keeps your games, training and membership together.
To upgrade, open the iOS or Android app and go to Settings → Membership & billing. The store shows your local price before purchase. Compare plans, AI limits and UK prices.
Android
Continue with your existing Blunderzone account.
Subscription purchase and restore are available in this app.
iPhone and iPad
Continue with your existing Blunderzone account.
Subscription purchase and restore are available in this app.