Maybe another good point will be freemium license extension? Just by sharing about SecureAPlus to friends and families (e.g. through social media, referral or writing reviews about them) to earn points to redeem license extension. You may be able to get perpetual license which is forever use of SecureAPlus if you accumulate enough points. But only available for freemium though. If you are looking for more premium features e.g. UAV "priority" as mentioned by OneDay then this may not be that applicable.