Keystone Inventory vs SupplyWatch
Two Shopify apps, side by side: detected stores, momentum, reviews, plans, listed features and who runs each. Store counts as of Oct 13, 2026 for Keystone Inventory, Nov 4, 2026 for SupplyWatch.
The short answer
- Paid plans start at $29/month for Keystone Inventory and $199/month for SupplyWatch.
- SupplyWatch lists 20 features Keystone Inventory’s listing doesn’t mention, including AI optimization, Auto-processing, Auto-restock.
Head to head
Light
- · Full Inventory Forecasting
- · Up to 500 Products
Business
- · Custom Bundles
- · Full Inventory Management
- · Inventory Forecasting
- · Reporting
- · Stock Control
- · Up to 1000 Products
Professional
- · Custom Product Bundles
- · Full Inventory Management
- · Integrated Stock Taking
- · Inventory Forecasting
- · Reporting
- · Stock Control
45-Day FREE Trial
- · >> $0 charged today
- · Automatic Purchase Orders
- · Bundles & variants tracked correctly
- · Cancel anytime before billing starts
- · No code or theme changes
- · Predict stockouts before they happen
Coverage counts what each App Store listing names. Every feature, checked off app by app, is in Shoplist.
See every featureKeystone Inventory turns your Shopify sales data into clear ordering decisions. It tracks how fast each product sells, factors in your supplier lead times, case packs and safety stock, and tells you exactly what to reorder and when — before you run out, without tying up cash in overstock. When it's time to order, select the products and Keystone builds purchase orders grouped by supplier.
SupplyWatch helps growing stores make better inventory and purchasing decisions. It analyses sales, stock, demand, seasonality, bundles, variants and lead times to recommend what to reorder, when to reorder and how much to buy. Spot stockout risk, excess stock and cash tied up in slow-moving inventory, then turn recommendations into purchase orders.
- Keep your best sellers in stock.
- Purchase orders — create, authorise, send, receive with Shopify stock push-back
- Your whole inventory at a glance
- Demand forecasting — reorder points, days of cover, suggested quantities
- Smart Stock Predictions – Popular products protected from stockouts
- One-Click Shopify Sync – Real-time inventory updates.
- Purchase Order Management – Track suppliers and incoming stock.
All the numbers
Every figure, side by side
A green dot marks the app ahead on a measured figure. Estimates, gaps and apps that leave no storefront trace never take the lead.
Adoption
| Measure |  Keystone Inventory |  SupplyWatch |
|---|---|---|
| Detected stores | Not published | Not published |
| Net store change, 28 days | 0 | 0 |
| Stores added, 28 days | Not enough data | Not enough data |
| Big-brand share | Not enough data | Not enough data |
| Top store categories | Not published | Not published |
| Top store countries | Not published | Not published |
Reviews
| Measure | Keystone Inventory | SupplyWatch |
|---|---|---|
| App Store rating | Not published | Not published |
| App Store reviews | Not published | Not published |
| New reviews, 28 days | Not enough data | Not enough data |
| Reviewers a year or more in | Not enough data | Not enough data |
Pricing
| Measure | Keystone Inventory | SupplyWatch |
|---|---|---|
| Free plan | Not listed | Not listed |
| Lowest paid monthly plan | $29/month(ahead) | $199/month |
| Longest free trial | 14 days | 45 days |
| Plans listed | 3 | 1 |
Listing
| Measure | Keystone Inventory | SupplyWatch |
|---|---|---|
| Shopify category rank | #449 | #123(ahead) |
| Shopify App Charts | Not on this week’s charts | Not on this week’s charts |
| Built for Shopify | No | No |
| Launched | Jun 29, 2026 | Feb 17, 2026 |
| Languages | 1 | 1 |
| Developer | Keystone Solutions | SupplyWatch Inc. |
FAQ
Keystone Inventory and SupplyWatch: common questions
- Is Keystone Inventory or SupplyWatch cheaper?
- Paid plans start at $29/month for Keystone Inventory and $199/month for SupplyWatch. Shoplist compares base prices only between monthly plans in the same currency; usage charges and annual plans vary, so check each plan’s limits.
- What features does each app list that the other doesn’t?
- SupplyWatch lists 20 the others don’t mention, such as AI optimization, Auto-processing, Auto-restock, Back-in-stock alerts. A feature missing from a listing may still be supported; this compares what each App Store listing says.
- Where does this comparison’s data come from?
- Shoplist crawls Shopify storefronts to detect which apps each store runs, and reads each app’s Shopify App Store listing for reviews, pricing, features and integrations. Store counts are as of Oct 13, 2026 for Keystone Inventory, Nov 4, 2026 for SupplyWatch; estimated figures are labeled.
How Shoplist compares apps
Store counts come from Shoplist’s crawl of Shopify storefronts, which detects the apps each store runs; they are as of Oct 13, 2026 for Keystone Inventory, Nov 4, 2026 for SupplyWatch. Reviews, ratings, plans, features and integrations come from each app’s Shopify App Store listing. 28-day figures are labeled when estimated, and a figure that is missing or estimated never decides who leads. Read the methodology.