If you want to build a viral referral program to get the word out about your product launch, KickoffLabs is a great choice. It lets you build and launch viral giveaways, referral programs and product launches in a few minutes with no programming. Bonus entry giveaways, prelaunch waitlists, milestone reward programs and influencer detection are among the features that can help you get people engaged and converting. KickoffLabs also can integrate with popular tools like Klaviyo, Mailchimp and Webflow, so it's a good all-purpose marketing tool.
Another tool worth a look is ZooTools, an all-purpose growth platform that's geared for small and medium-size businesses to acquire, engage and retain users. It's got tools to capture leads and build an audience with waitlists and referrals. Email marketing tools come with templates, AI-optimized subject lines and A/B testing. ZooTools also screens out spammers so your campaigns aren't derailed by bots and spammers.
Both KickoffLabs and ZooTools would be good options for a viral referral program, each bringing its own abilities to the table to get people engaged and converting.