Yes, both VWO Engage and iZooto offer a Free Trial.
VWO Engage is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
iZooto is designed for Large Enterprises, Medium Business and Small Business.
Pricing for VWO Engage Starts at $99/Month whereas for iZooto Starts at $25/Month.
Some top alternatives to VWO Engage includes OneSignal, PushBots, PushAlert, Push.World, PushPro, TITANPush, Notificare, PushNinja, SmartPush and Notificationpro.
Some top alternatives to iZooto includes VWO Engage, PushAd, NotifyVisitors, PushBots, PushAlert, DigitalPUSH, Push.World, Notificare, ReAim, SmartPush and Notificationpro.