TierGain ‑ Bundle Builder BYOB

One app. Ten bundle types. Three reward types per tier.Customers build bundles step by step, unlocking tiered rewards: discounts, free shipping, AND free gifts in the same bundle. No other app combines all three.Mix & match, meal builders, gift sets, anchor product, subscription boxes, volume discounts, starter kits, complete-the-set, progressive rewards, and fixed bundles.Server-side discounts via Shopify Functions. Works on any theme, no code. Set up in under 5 minutes.