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·Shipping rates
PackOS Pack

PackOS Pack

PackOS solves the problem of inaccurate shipping rates at checkout. Most stores guess at box sizes, which leads to overcharging customers or losing...
★ 0.0·0 reviews·By PackOS

PackOS selects the correct box for every order and returns accurate live carrier rates at checkout.

PackOS solves the problem of inaccurate shipping rates at checkout. Most stores guess at box sizes, which leads to overcharging customers or losing money on shipping. PackOS uses bin-packing logic to determine which box an order actually fits in, then queries live carrier APIs to return an accurate rate for that specific package. Merchants configure their box inventory once, set their carrier preferences, and PackOS handles the rest automatically at checkout.

PackOS solves the problem of inaccurate shipping rates at checkout. Most stores guess at box sizes, which leads to overcharging customers or losing money on shipping. PackOS uses bin-packing logic to determine which box an order actually fits in, then queries live carrier APIs to return an accurate rate for that specific package. Merchants configure their box inventory once, set their carrier preferences, and PackOS handles the rest automatically at checkout. more
  • Bin-packing engine selects the recommended box for each order automatically
  • Live carrier rates from USPS, UPS, and FedEx returned at checkout
  • Configurable box inventory, carrier settings, and shipping rules
Categories
Shipping rates
Reviews history
No history available
Pricing
50 USD
Free trial available
View on Shopify ↗
Quick facts
Developer
PackOS
Category
Shipping rates
Launched
mai 2026
Languages
1 (English)
Pricing model
Paid
Built for Shopify
No
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