Lightspeed + Shopify
Both can keep your point of sale and Shopify in sync. The difference is depth — Octopus is a broad connector across many platforms, while Mortar runs your store and Shopify as one operation: real-time sync, order routing, returns, and gift cards across channels.
Both tools move products, inventory, orders, and customers between your POS and Shopify, and both sync in-store gift cards. The meaningful differences are in how detailed the integrations get — and how crucial those details are.
Mortar syncs in real time with handling for product drops, flash sales, and Black Friday. Octopus describes its sync as “near real-time,” running in real time or at scheduled intervals depending on your settings — and the minutes between updates are where the same unit sells twice.
Mortar routes every Shopify order to the right location automatically — with enhanced order management available for fraud, pre-orders, and more — and supports ship-from-store, BOPIS, and local delivery. Octopus mirrors Shopify but doesn't provide any additional routing functions.
Mortar syncs refunds, exchanges, and Shopify order edits as records across Shopify and your POS, and works with returns apps like Loop and Narvar. Octopus's listing doesn't mention whether a Shopify-originated return flows back into your POS. At a 20–35% online return rate, that difference shows up as inventory discrepancies almost every day.
Octopus Bridge, by 24Seven Commerce, connects a number of POS systems to e-commerce platforms and marketplaces, and it works for a lot of retailers. If you're evaluating both, this page gives you a direct comparison — what each handles, what each doesn't, and where the day-to-day difference shows up. Mortar is built by Accumula, a Lightspeed Customer Success and Service Excellence Award winner and the integration provider more Lightspeed retailers rely on than any other. The app was rebranded from Accumula to Mortar in late 2024 — if you've seen reviews or recommendations for “Accumula,” that's the same product.
See Mortar’s reviews on Shopify and G2 →Mortar starts at $39/month. Octopus Bridge at $79/month for cloud POS like Lightspeed. Here's how the features compare, based on each product's public listings (June 2026).
Mortar runs your store and your online store as one operation. Add channels while you keep working in the POS you already use. Sell everywhere your customers are — without the work multiplying.
Your store, everywhere.
Why Mortar
Published starting price, self-serve setup, and the things sync alone doesn't cover — real-time updates, automatic order routing, cross-channel returns, and gift card sync. Start a free trial and connect Lightspeed or Heartland and Shopify in minutes.
Connect your Lightspeed Retail account to Shopify in minutes.
Last updated: May 2026