Cairn turns repeat purchases into points your customers spend as store credit that applies itself at checkout: no codes to copy, nothing to stack. Set earning rules, VIP tiers with multipliers, birthday and referral rewards in minutes. Refunds and cancellations reverse points automatically, every balance comes from an auditable ledger, and the dashboard shows member revenue against everyone else. Moving from another loyalty app? Import balances by CSV with a dry run before anything is written.

• Points for orders, sign-ups, birthdays and referrals, with a refund hold
• VIP tiers with multipliers; redeem as store credit or single-use codes
• CSV import of balances; member vs non-member revenue on the dashboard
• Klaviyo events, Shopify Flow triggers and a POS block for in-store rewards
• Bonus campaigns like double points weekends and a full rewards page block

AmendLane gives signed-in customers a short window to correct an eligible size or colour on the original order. It verifies ownership, stock, and Shopify-calculated totals before committing a zero-balance change. The app places its own fulfillment hold, rechecks post-edit routing, and releases only holds it owns. Delivery-detail changes are sent to the merchant as requests and never applied automatically.

• Let signed-in customers swap eligible sizes or colours
• Verify zero-balance edits before changing the original order
• Protect picking with app-owned holds and explicit release