Viral Loops

Viral Loops ships templates for the referral mechanics that already worked for somebody else, a waiting list, a milestone giveaway, a straight refer-a-friend, and lets you run one without building it. Participants import and export as a list, so it plugs into whatever you already send email with. Pricing rises with the number of participants rather than with features.

Plans are $35, $99, $159 and $279 a month, with 30 percent off for annual billing. The trial gives unlimited use of the Growing plan for 14 days, capped at ten participants, which is enough to test the flow and not to run a campaign. Import and export are on every tier and the API arrives on the second.

Teams launching something with a waiting list, and creators who want a proven referral mechanic without building one. Anybody wanting a one-off prize draw will find simpler tools for less.