"When will it arrive?" is the single most common question before a shopper hits Buy — and uncertainty kills conversion. Estimated Delivery Date on Product & Cart answers it precisely, on the page, in real time.

This is a custom Shopify app built, installed and supported by ECOSIRE — not a one-click App Store download. After purchase we scope your shipping logic, build the app against your theme, install it on your store, and hand you a working delivery-date system. Typical delivery is 5–10 business days depending on rule complexity.

The app renders a dynamic estimated delivery date ("Order in 3h 12m to get it by Thu, Jul 4") on product, cart and checkout surfaces. Estimates are computed from per-zone and per-carrier transit times, a daily cut-off clock (order before the cut-off and today counts; after, it rolls forward), processing/handling days, and a holiday and non-working-day calendar so weekends and public holidays never inflate a promise you can't keep.

Technically, it's a proper embedded app: OAuth-authenticated, installed via the Admin GraphQL API, with shipping rules stored in shop metafields and surfaced through a theme app extension (App Embed / app block) so there's no hard-coded theme edit to maintain. It reads multi-location inventory and product/variant data to vary the date by stock state, and can listen to webhooks (e.g. products/update, inventory_levels/update) to keep estimates fresh. An optional countdown urgency timer drives the cut-off, and all copy renders in your store's active locale for multi-language storefronts.

Because we build it to your carriers, zones and warehouse reality — not a generic template — the dates are believable, and believable dates convert. ECOSIRE owns the build, the install and the ongoing support.