Detected Sep 5, 2026
App name changed
PackOS PackPackOS Checkout

Shipping ratesBy PackOS5.0 (1 reviews)Launched May 20, 2026Updated August 22, 2026
PackOS Checkout launched on May 20, 2026. Shoplist is watching for its first storefront installs and tracking its 1 public reviews, pricing, and listing changes in the meantime.
Get alerted on first storefront installs, review spikes, pricing changes, and listing edits.
Store movement comes from Sonar's storefront scans; listing changes come from the Shopify App Store page.
App Store listing
Detected Sep 5, 2026
PackOS PackPackOS Checkout
Detected May 30, 2026
Description rewritten
5115 W Top Hand Trl, Laveen, AZ, 85339, USPhoenix, AZ, US
Detected May 23, 2026
Apps merchants weigh against PackOS Checkout, with their own detected stores and ratings.
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. When box size is estimated incorrectly, merchants either overcharge customers and lose carts, or undercharge and lose margin. PackOS uses bin-packing logic to determine which box an order actually fits in, then queries live rates from USPS, UPS, FedEx, and other carriers for that specific package. Merchants configure their box inventory once, set their carrier preferences, and PackOS handles the rest automatically at checkout.
Every number on this page comes from public storefront scans and the public Shopify App Store listing. If Shoplist shows PackOS Checkout on a store, it is there.
Read the data methodologyCompare
Detected stores, ratings, pricing, and momentum side by side.
Developer
Every app PackOS publishes, with their detected reach.
Rankings
The ten apps gaining the most detected installs in each category.
Directory
Browse every app Shoplist tracks, by category, rating, and reach.