UltraMouse is shareware, which means you can try the trial version before you buy.
After try UltraMouse, if you
like it and want to continue using it, please register, you can register at any time you want by clicking the Buy and Activate button in the About dialog-box, or thru the following secure server.
The registered users of UltraMouse will get a unique Serial Number immediately after ordering, after activate the Serial Number, all trial-limits are removed. Registered users can get support of UltraMouse which includes upgrade for at least one year.