ecomrestack

battles / Shipping

ShipEngine vs ShipperHQ

ShipEngine ($99/mo/mo, vibe code 4/10) vs ShipperHQ ($300/mo/mo, vibe code 4/10). ShipperHQ is the easier one to rebuild yourself — here is what you lose either way.

ShipEngine
KEEP

Shipping

$99/mo/mo

Vibe code4/10
Moat5/10
MVP
2 weeks
Full replacement
12-24 months, due to carrier API certifications and fragile legacy carrier protocols
get the build prompt →
ShipperHQ
KEEP

Shipping

$300/mo/mo

Vibe code4/10
Moat4/10
MVP
2 weeks
Full replacement
6-12 months, due to carrier API reliability, 3D packing math, and edge-case shipping logic

easier to rebuild

get the build prompt →

price gap / year

$2,412/mo

running both / year

$4,788/mo

our call

Start with ShipperHQ — highest vibe code, weakest moat.

ShipEngine

Rebuilding a REST API wrapper for a single carrier like FedEx is straightforward, but ShipEngine normalizes hundreds of legacy carrier protocols into a single JSON schema. You cannot easily replicate CASS-certified address validation or maintain legacy carrier auth/ZPL output specs without endless operational drag.

you can rebuild

  • Single-carrier label generation (e.g. direct EasyPost or FedEx API calls)
  • Internal parcel tracking dashboard and status webhook handler
  • Custom packing slip and invoice PDF generation
  • Simple table-based or flat-rate shipping rule engine
  • Basic shipping label batch creation scripts

what you lose

  • Pre-negotiated USPS and UPS volume shipping discounts
  • USPS CASS-certified address validation and DPV matching
  • Unified JSON schema across 50+ international legacy shipping carriers
  • Native thermal printer format compilation (ZPL II, EPL2, PNG, PDF)
  • Automatic generation of paperless international customs forms (CN22/CN23/ETD)

real moats

  • Aggregated volume tier discounts with major carriers passed down to developers
  • Maintained certifications and direct carrier integration specs
  • Licensed CASS postal databases for address normalization

open source escape hatches

ShipperHQ

Conditional rate rules can be written in code, but ShipperHQ's core value is maintaining low-latency REST calls to carrier networks with dynamic 3D bin packing. If your carrier API times out or your package calculation fails during checkout, you lose sales immediately.

you can rebuild

  • If-then shipping rules based on cart weight, cart value, or customer tag
  • Flat-rate matrices and zip-code zone surcharges
  • Basic origin warehouse selection logic
  • Fixed markup or markdown rules on carrier rates
  • Estimated delivery transit date logic

what you lose

  • 3D bin-packing algorithm for multi-item box selection during live checkout
  • Out-of-the-box support for dozens of LTL freight carriers and regional operators
  • Carrier rate API caching layer and automatic fallback execution on timeout
  • In-checkout pickup location widgets and delivery calendar selectors
  • Turnkey checkout integrations certified for Shopify Plus, BigCommerce, and Magento

real moats

  • Sub-second checkout rate calculation SLA with fault-tolerant carrier API proxies
  • Deep carrier certification and LTL freight rate integration layer
  • Platform-certified native checkout extension hooks

open source escape hatches

Questions people ask

Which is easier to rebuild with AI, ShipEngine or ShipperHQ?

ShipperHQ. It scores 4/10 on vibe code with a moat of 4/10, so an AI-assisted MVP takes about 2 weeks and a full replacement about 6-12 months, due to carrier API reliability, 3D packing math, and edge-case shipping logic.

Which one costs less, ShipEngine or ShipperHQ?

ShipEngine at $99/mo/mo for a typical mid-market store. The gap between the two is about $2,412/mo a year.

What do I lose if I replace ShipEngine?

Pre-negotiated USPS and UPS volume shipping discounts USPS CASS-certified address validation and DPV matching Unified JSON schema across 50+ international legacy shipping carriers

What do I lose if I replace ShipperHQ?

3D bin-packing algorithm for multi-item box selection during live checkout Out-of-the-box support for dozens of LTL freight carriers and regional operators Carrier rate API caching layer and automatic fallback execution on timeout

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