License

Users

  • The license is valid for one named user (not a location).

Multiple machines

  • Each copy of the program is a single user license.
  • The person named on the license is welcome to install the program on TWO machines (for example, a desktop and laptop) provided that he/she is the only user of the software.
  • Only one "lab computer" per license is permitted. If the program is installed on a lab computer, it cannot be installed on any other computers.
  • You will need a separate unlock code for each machine, which we supply at no cost.
  • If you replace an existing computer in the future we supply a new code at no cost.

License Term

Get an unlock code

  • For information on how to obtain or use a code, click here.

Payment Policy

  • Payment must be received in full before the unlock code is released.
    (A purchase order is not a substitute for payment).

Refunds

  • Refunds will not be issued after the program has been unlocked.

Bulk Licensing

  • When purchasing multiple licenses, the lease starts the day the customer requests the FIRST unlock code. All leases will be set to expire one or two years from that date.
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"This is stunning in its clarity and efficiency."

Dr. Sal Mannuzza - New York University School of Medicine

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Power and Precision

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Power and Precision is a statistical power analysis software package for calculation of a sample size for a planned study. The program features an unusually clear interface, and many tools to assist the user in developing an understanding of power analysis.