Neither OptinBox nor IFTTT offers a free trial.
OptinBox is designed for Large Enterprises, Medium Business and Small Business.
IFTTT is designed for Individuals, Freelancers, Medium Business and Small Business.
Pricing for OptinBox Starts at $4.99/Month whereas for IFTTT Starts at $3/Month.
Some top alternatives to OptinBox includes Social Proof Signals, Notipack, Social Proofy, Popify, Qualified, eNotify, Notificationpro, SocialProof, Acalytica Social Proof, Workvivo, IFTTT and Pushfy.
Some top alternatives to IFTTT includes Tasker TimenTask, Zapier, Integrately, Microsoft Flow, Zoho Flow, Qualified, Built.io Flow, Workvivo, Flowall, Applet, OneSaaS and Basaas.