ReplenishRadar vs Sumtracker: Inventory Planning vs Inventory Operations

If you are choosing between ReplenishRadar and Sumtracker, you are usually deciding between two approaches: planning to prevent stockouts, or operational inventory control with bundles and connected channel syncing.

TL;DR decision

• Choose ReplenishRadar if you sell on Shopify plus Amazon and want unified forecasting, reorder recommendations, and FBA workflows in one place.
• Choose Sumtracker if you are Shopify-first and need bundles, barcode workflows, and broad channel syncing as an inventory operations layer.

What you are actually deciding

1. Planning vs operations: Do you need better reorder decisions, or tighter day-to-day warehouse execution?
2. Amazon depth: Do you need FBA-specific planning (transfers, inbound tracking, reimbursements), or just connected quantity sync?
3. Bundles and kits: Is bundle component depletion a core requirement?
4. Pricing model: SKU-based planning tiers vs order volume or channel connection tiers.
5. Time to value: Quick OAuth setup vs heavier configuration and operational change.

How ReplenishRadar is built to prevent stockouts

ReplenishRadar is designed around one outcome: keep you in stock across Shopify and Amazon without living in spreadsheets.

• Connect Shopify and Amazon, get a unified inventory view across channels and locations.
• Forecast demand from your sales history, account for velocity and seasonality.
• Get reorder recommendations tied to lead times and safety stock.
• Coordinate Amazon FBA transfers with what you still need for Shopify fulfillment.
• Track FBA inbound status and reimbursement opportunities so inventory on paper matches reality.

Where Sumtracker fits better

Sumtracker is typically a better fit when:

• Bundles and kits are a daily workflow, and component level accuracy is non-negotiable.
• You need barcode scanning and operational warehouse features.
• You want one app to sync inventory across many marketplaces beyond Shopify and Amazon.

Critical differences that matter

Decision factor	ReplenishRadar	Sumtracker
Core focus	Inventory planning, forecasting, stockout prevention	Inventory operations, bundle control, connected sync
Shopify connection	OAuth connect, quick setup	Shopify app
Amazon emphasis	Built around FBA workflows and planning	Supports Amazon sync, typically not FBA-first planning
Unified Shopify plus Amazon forecasting	Yes	Depends on workflow, often channel-by-channel
FBA transfers	Transfer suggestions aligned to both channels	Not a primary workflow
FBA inbound tracking	Yes	Not a primary workflow
Reimbursements tracking	Yes	Not a primary workflow
Bundles and kits	Yes	Strong bundle and kit workflows
Pricing transparency	Public SKU-based tiers	Often order volume based tiers

Pricing and onboarding

ReplenishRadar pricing is public, based on active SKUs and channel scope. Plans start at $29/month for Shopify-only, and $59/month for Shopify plus Amazon. See /pricing for the current tiers.

Sumtracker pricing commonly scales by order volume and connected stores or channels. Expect to choose a tier that matches your monthly order volume and the number of channel connections.

Pricing changes, so treat any comparison as directional. The real question is whether you are paying for planning outcomes or operational workflows.

Bottom line

If your biggest problem is stockouts across Shopify and Amazon, choose ReplenishRadar. If your biggest problem is bundle accuracy and warehouse operations, choose Sumtracker.

Start your 14-day free trial → and see how ReplenishRadar unifies your Shopify and Amazon inventory in minutes.

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Related Reading:

• Multi-Channel Inventory Challenges
• Amazon FBA Restock Strategies

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Sources

Competitor information is based on publicly available data. Features may change.

• Sumtracker Shopify App Store listing
• Sumtracker pricing page
• ReplenishRadar pricing page