When you register you will get 14 days free trial of eMathStudio and a checking quota of 20 automatic checkings for verifying the correctness of your math assignments. When your trial ends, you will only have access to the free features, Notes (without saving) and Checker (limited amount per hour). Your material will still be stored on your user account, and available for you whenever you again have a valid subscription.
Follow this link to see which subscription plan would be best suitable for you:
We hope you enjoy our math books, math tools and automatic math checker!