Unfortunately, there is no way to freeze sperm on your own at home.
Couples sometimes feel intense pressure to perform on demand during the ovulation window. Mosie can be a nice alternative way for you two to relieve some of that pressure. He can collect his sample and leave it for you for up to an hour - but it's best to use it as soon as you can.
It may be for many couples - being able to use Mosie in the comfort of your home and on your own terms can be a stress reliever when it comes to conception.