What are some alternatives?
When comparing myoptimity.com Optimity: Live.Work.Play and Zero, you can also consider the following products
Physio Health - Stay healthy, get rewards.
Privacy.com - Get a new virtual card for every transaction
SQRL - Save $1 for every 1000 steps you take
CleanEmail - Clean Email is an online service that empowers you to take control of your mailbox.
iRewardHealth - Motivating healthy behavior change
Sanebox - SaneBox is a cloud-based service that allows users to filter and manage their emails.