What’s the difference between the plans?
All paid plans unlock the same core features. The differences are price (annual is cheapest per month) and your monthly Ace AI-tutor allowance: Monthly includes 20 messages/month, while Quarterly and Annual include the full 150 messages/month.
Related Articles
Plans & pricing
Premium is available monthly, quarterly, or annually. Annual is the best value if you're studying over several months or working toward more than one certificate. Upgrading and proration You can upgrade anytime and pay only the prorated difference ...
What’s the best daily study routine?
A simple, effective routine: (1) work the 5-step method through a chunk of new material, (2) clear your Smart Review due cards each day, and (3) take an Exam Simulation once or twice a week to gauge readiness. Consistency matters more than marathon ...
How does proration work?
If you upgrade partway through a billing period, you're charged only the prorated difference for the days remaining, and your renewal date adjusts accordingly. Downgrades take effect at the next renewal. Stripe handles the math automatically.
How do I upgrade, downgrade, or change my plan?
Go to Upgrade (or Account → Billing) to start a plan or switch tiers. When you change mid-cycle, billing is prorated — you only pay the difference for the time remaining. Your access and progress carry over.
Report a question error or get help
We want the question bank to be flawless, and you can help us keep it that way. Report a question issue If a question looks wrong, send us the details — the exam, the question, and what looks off — from the Support page. We review reports quickly and ...