How do I update my payment card?
Open Account → Billing and update your payment method in the secure portal. We never see or store your full card number — payments are handled by Stripe. App-store subscribers update payment in their Apple/Google account.
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Do I need a credit card to start?
No. You can create a free account and start studying with no credit card. The free plan gives you a 40-question preview of your exam so you can try the full study flow end to end. You only enter payment details if you choose to upgrade to Premium for ...
Manage or cancel your subscription
You're in control of your subscription from one place: Settings → Billing. Settings → Billing: view your plan, update payment, or cancel. Update or cancel Update payment / change plan — manage your card and switch between monthly, quarterly, and ...
I subscribed in the app — how do I manage billing?
Subscriptions purchased inside the iOS or Android app are managed by Apple or Google, not us. Open your device's Subscriptions settings (Apple ID or Google Play account) to change the plan, update payment, or cancel. Web purchases are managed in ...
How do I change my email or password?
Update your name and email in Account settings. To change your password, sign out and use "Forgot password?" on the login screen to get a secure reset link, or update it from your account page if you're signed in.
Is there a free trial?
Instead of a time-limited trial, we keep a permanently free plan: a 40-question preview for your exam, the Question of the Day, and the glossary and ACS-code tools. There's no countdown and no card required. Upgrade to Premium whenever you're ready ...