Every Shopify ETA app paywalls the basics. IP geolocation, unlimited shipping zones, postal code rules, checkout widget, countdown timers — all gated behind $9–19/mo plans on the top apps.
Shipdate puts all of that on the free plan. Pro is $2.99/mo for analytics. That's it.
Show estimated delivery dates, ETA, EDD, and shipping countdown on product, cart, and checkout pages. Set transit times by zone, country, or postal code. Handle holidays and cut-offs. Reduce "where is my order?" tickets.