Inventory Planner alternative: SteadyShelf vs Inventory Planner by Sage

Inventory Planner by Sage is a solid app. If you're comparing, here's an honest look at where each one fits.

At a glance

Competitor prices, ratings and review counts are from each app's Shopify App Store listing, checked October 24, 2026. Prices change, so confirm on the listing before you buy.

Inventory Planner by Sage pricing

Quote-based. The listing says pricing adapts to your business and to contact them for a quote, and that charges may be billed by Sage outside your Shopify invoice.

Where Inventory Planner by Sage is the better pick

Larger multi-channel retailers that want deep financial reporting, SKU-level profitability and a sales-assisted setup.

Where SteadyShelf is the better pick

SteadyShelf does one job: tell you what to reorder, how much, and the exact day to order, based on each supplier's lead time. Then it drafts the purchase order, emails it to your supplier when you approve, and receives the stock into Shopify.

• Forecasts from your real Shopify sales, per variant, with seasonality
• Order-by date for every SKU based on each supplier's lead time
• Suggested quantities rounded to case packs, with the math shown
• Draft purchase orders you approve, emailed to the supplier
• Receive stock (including partial shipments) straight into Shopify inventory
• Weekly reorder email and supplier import from any spreadsheet

Every suggestion shows its math (sales per day, days left, lead time, quantity), so you can check it instead of trusting a black box. And the price stays $29 whether you do $50K or $5M a year.

SteadyShelf is launching on the Shopify App Store. Join early access to get the install link first.

Comparing more options? See all Stocky alternatives compared.

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