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Lesson

Saved phrases

Settings

Anthropic API key Stored only in this browser. It is sent straight to api.anthropic.com, never anywhere else — this site has no server to send it to. Anthropic bills your own account for what you send. Get one → Model Which version of Claude answers. They differ in how carefully they explain and in what they cost per message. Leave this alone if you are not sure. Effort How long it thinks before answering. The fastest model has no effort setting and ignores this.

Your data

Import a backup

include the API key in the export Progress, saved phrases, drill scores and settings — one JSON file, no account anywhere.

Install In Chrome: menu → “Add to Home screen”. Installed, this screen is what opens, and you can share a screenshot straight into it from any app.