ecomrestack

battles / ERP & Inventory

ERPAG vs Pulpo WMS

ERPAG ($99/mo/mo, vibe code 3/10) vs Pulpo WMS ($750/mo/mo, vibe code 3/10). Pulpo WMS is the easier one to rebuild yourself — here is what you lose either way.

ERPAG
KEEP

ERP & Inventory

$99/mo/mo

Vibe code3/10
Moat3/10
MVP
3 weeks
Full replacement
12-18 months, due to complex multi-level BOM explosion algorithms, inventory COGS accounting, and multi-channel sync edge cases.
get the build prompt →
Pulpo WMS
KEEP

ERP & Inventory

$750/mo/mo

Vibe code3/10
Moat3/10
MVP
3-4 weeks
Full replacement
6-12 months, due to mobile scanner device logic, offline sync, and physical picking route optimization

easier to rebuild

get the build prompt →

price gap / year

$7,812/mo

running both / year

$10,188/mo

our call

Start with Pulpo WMS — highest vibe code, weakest moat.

ERPAG

While basic inventory CRUD and simple bill of materials can be generated by AI agents in a weekend, ERPAG's real value lies in manufacturing material requirements planning (MRP), COGS inventory valuation engines, and continuous integration with accounting platforms. Building a bespoke ERP introduces enormous risk for physical stock mismatches, bad tax reporting, and broken purchasing cycles.

you can rebuild

  • Single-level Bill of Materials (BOM) definition
  • Basic purchase order generation and vendor tracking
  • Simple stock level updates and reorder threshold alerts
  • Barcode printing and basic SKU lookup
  • Manual work order creation and status tracking

what you lose

  • Multi-level automated MRP material requirement calculations
  • Turnkey bi-directional sync with QuickBooks Online and Xero
  • Real-time COGS accounting valuation methods (FIFO, AVCO, Standard Costing)
  • Serial number and lot tracking with expiration date management
  • Native Shopify and WooCommerce real-time stock allocation sync

real moats

  • High switching costs from deeply embedded operational and historical inventory data
  • Tight accounting general ledger integration lock-in
  • Battle-tested inventory valuation calculations compliant with accounting standards

open source escape hatches

Pulpo WMS

Pulpo WMS handles physical warehouse operations like mobile barcode device triggers, offline data queueing, bin pathfinding, and multi-channel order allocation. While building a web dashboard for inventory counts takes hours with AI, building software that reliably runs on rugged Zebra devices in warehouse Wi-Fi dead zones takes months. Replacing this requires hardware testing and operational field validation.

you can rebuild

  • Shopify and WooCommerce order fetching logic
  • Warehouse location hierarchy database (Zone, Aisle, Shelf, Bin)
  • Basic inventory count updates and stock movement logs
  • Packing list generation and printable order summaries
  • Web admin dashboard for inventory monitoring

what you lose

  • Native support for Android Zebra/Honeywell industrial hardware barcode scanners
  • Offline-first synchronization for warehouse Wi-Fi dead zones
  • Dynamic wave, batch, and zone picking route optimization
  • Hardware-level direct printing integrations (Zebra ZPL drivers)
  • Real-time physical audit trails with hardware scan validation

real moats

  • Integration with physical barcode hardware and warehouse devices
  • High switching costs associated with retraining physical warehouse staff
  • Multi-carrier shipping and ecommerce platform integration web

open source escape hatches

Questions people ask

Which is easier to rebuild with AI, ERPAG or Pulpo WMS?

Pulpo WMS. It scores 3/10 on vibe code with a moat of 3/10, so an AI-assisted MVP takes about 3-4 weeks and a full replacement about 6-12 months, due to mobile scanner device logic, offline sync, and physical picking route optimization.

Which one costs less, ERPAG or Pulpo WMS?

ERPAG at $99/mo/mo for a typical mid-market store. The gap between the two is about $7,812/mo a year.

What do I lose if I replace ERPAG?

Multi-level automated MRP material requirement calculations Turnkey bi-directional sync with QuickBooks Online and Xero Real-time COGS accounting valuation methods (FIFO, AVCO, Standard Costing)

What do I lose if I replace Pulpo WMS?

Native support for Android Zebra/Honeywell industrial hardware barcode scanners Offline-first synchronization for warehouse Wi-Fi dead zones Dynamic wave, batch, and zone picking route optimization

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