Open & Close Hours: BlockHour

by kumo studio Cart customization Operations - Other$9.99/month. Free trial available.Listed May 2026

Block checkout outside store hours — server-side, bypass-proof, even overnight. Other hours apps only hide buttons or show popups — shoppers can still check out. BlockHour enforces your hours at checkout with Shopify Functions: orders outside your hours are rejected before payment, on any Shopify store, with no theme code. Set per-day hours in 30-minute steps, including overnight (e.g. 22:00–02:00). Add holidays by date range, close instantly with one toggle, and customize the message shoppers see. Install, set your hours, and activate the checkout rule — done.

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What it actually does

blocks checkout outside business hoursserver-side checkout validationsets business hours per day with 30-minute precisionsupports overnight hours that cross midnightadds holidays by date rangecustomizes the message shown to customers