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