Accounts & sign-in¶

A Physicar AI account powers the AI features (the AI chat), your credits, and classroom membership.

Signing up¶

Create an account with your email, a password (at least 8 characters), and a username (2–30 characters: letters, numbers, hyphens, underscores). We do not collect your real name or date of birth. You also agree to the required consents (personal-information collection, third-party sharing, cross-border transfer).

There is a minimum age that varies by country — during sign-up you check a box confirming you meet your country's minimum age. If you are under the minimum age, you can still sign up without checking it, then sign in with a classroom invite code from your teacher.

After signing up, verify your email via the link sent to you. (If you try to sign in first, you'll be offered a "resend verification email" link.)

Signing in & joining a classroom¶

Sign in with your email and password. The sign-in form also has a classroom invite code field — enter the 12-character code from your teacher to join a classroom immediately. You can also join later from your profile.

Your profile¶

From your profile you manage your classroom membership, credits, username, and password.

Cost & operation¶

Credits are the platform balance (1 credit = 1 USD) and pay for AI usage (chat, realtime voice) and cloud simulator time. Live prices — always the final billed amounts — are on Credits & pricing.

Cloud simulator — billed per second while the machine runs: 2 / 3 / 4 credits per hour for the 4 / 8 / 16 vCPU machines.
Simulator lifecycle — after about 30 minutes of inactivity the machine stops automatically (billing stops, files are kept). Stopped for more than 1 hour, the workspace is archived to an image, so resuming takes 2–3 minutes instead of about one. After 30 days without a run the machine is deleted automatically, files included.
World publishing — up to 10 published worlds per user, 200 MB each. A published world expires 180 days after its last publish; publishing again renews it under the same link.