With AMBOSS Plus, you can answer the same question as many times as you like! Questions can be recycled into future question sessions and you can create folders with questions you would like extra practice on. Similarly, you can select an option in the custom session mode to exclude questions you have already answered.
With AMBOSS Standard, access to the Qbank is removed after reaching 50 questions in one month. You can answer the same question multiple times, but each time will count towards your 50 question limit.