Atom Inventory Management vs Keystone Inventory
Two Shopify apps, side by side: detected stores, momentum, reviews, plans, listed features and who runs each. Store counts as of Oct 13, 2026.
The short answer
- Only Atom Inventory Management lists a free plan. Paid plans start at $9.99/month for Atom Inventory Management and $29/month for Keystone Inventory.
- Keystone Inventory lists 12 features Atom Inventory Management’s listing doesn’t mention, including Custom reports, Forecasting, Inventory planning.
Head to head
Momentum
New reviews each month
Review pace is the clearest public read on how fast an app is winning new merchants.
Free
- · 30 day money back guarantee
- · Auto Discount
- · Bundle
- · Daily/Flash Sale
- · Home Page Sale
- · Inventory Forecasting
Starter
- · All features
- · Monthly orders under 300
Growing
- · All features
- · Monthly orders under 500
Scaling
- · ---
- · All features
- · Monthly orders under 1000
- · Shops with monthly 1000+ orders free install with $0.09 per order
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
Coverage counts what each App Store listing names. Every feature, checked off app by app, is in Shoplist.
See every featurePurchase in time with least stock level while avoid running out of stock which means loss of sales. With our map you can let staff who do not understand the products to manage purchasing which is critical to a business to take off. Use Kanban board to track all your Purchases on the road and also see how much money is "on the way" which is also your "inventory" which holds your capital.
Keystone 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.
- Smart forecasting to purchase and reorder the right products with right amount
- Promote the right products with scheduled discounts
- Maximize your inventory turnover ratio with visible and tangible results
- 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
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 |  Atom Inventory Management |  Keystone Inventory |
|---|---|---|
| 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 | Atom Inventory Management | Keystone Inventory |
|---|---|---|
| App Store rating | 5.0 ★ | Not published |
| App Store reviews | 2 | Not published |
| New reviews, 28 days | 0 | Not enough data |
| Reviewers a year or more in | Not enough data | Not enough data |
Pricing
| Measure | Atom Inventory Management | Keystone Inventory |
|---|---|---|
| Free plan | Yes | Not listed |
| Lowest paid monthly plan | $9.99/month(ahead) | $29/month |
| Longest free trial | Not listed | 14 days |
| Plans listed | 4 | 3 |
Listing
| Measure | Atom Inventory Management | Keystone Inventory |
|---|---|---|
| Shopify category rank | #307(ahead) | #389 |
| Shopify App Charts | Not on this week’s charts | Not on this week’s charts |
| Built for Shopify | No | No |
| Launched | Jun 6, 2022 | Jun 29, 2026 |
| Languages | 1 | 1 |
| Developer | atomdot | Keystone Solutions |
FAQ
Atom Inventory Management and Keystone Inventory: common questions
- Is Atom Inventory Management or Keystone Inventory cheaper?
- Only Atom Inventory Management lists a free plan. Paid plans start at $9.99/month for Atom Inventory Management and $29/month for Keystone Inventory. 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?
- Atom Inventory Management lists 2 the others don’t mention, such as AI optimization, Auto-processing. Keystone Inventory lists 12 the others don’t mention, such as Custom reports, Forecasting, Inventory planning, Inventory sync. 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; 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. 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.