Inventory Planner Alternative: $99/mo vs ~$245 Quotes

If you are searching for an Inventory Planner alternative, you are probably dealing with one of three things: a surprise price hike after renewal, a sales process that will not show you the price, or an Amazon gap that forces you to run two tools instead of one. I have talked to dozens of sellers in exactly this position.

ReplenishRadar starts at $99/month with public pricing, connects Shopify and Amazon in one unified plan, and sets up in under 10 minutes. No sales call. No contract.

Start a free 14-day trial and see your inventory health report in minutes. Or get a free report without committing to a trial.

Why sellers look for an Inventory Planner alternative

I talk to sellers switching off Inventory Planner every week. The reasons cluster into four patterns.

The price keeps climbing. Inventory Planner moved to revenue-based custom pricing. The floor is roughly $244.99/month according to RevenueGeeks' pricing analysis, but it scales with your revenue. Sellers doing $5M+ a year report quotes well above that. After the Sage acquisition, renewal price hikes of 2-3x are documented in G2 reviews and Trustpilot. You do not know what next year costs until renewal time.

Amazon is not a first-class channel. You can connect Amazon for demand data, but there is no FBA inbound plan creation, no restock limit awareness, no transfer quantity math built for FBA constraints. If you sell on both Shopify and Amazon, you end up running Inventory Planner plus a separate Amazon tool. Two subscriptions. Two data sets. Zero coordination.

The sales process is a wall. Inventory Planner removed public pricing tiers. The Shopify App Store listing says "Contact us to get a quote." You submit your business name, revenue, email, and phone number before you see a number. ReplenishRadar shows you the price on the website and lets you start a trial in two clicks.

Shopify sync issues keep showing up. Multiple 2025-2026 Shopify App Store reviews describe data syncing problems that disrupt forecast accuracy. One reviewer documented a connection failure that persisted for months. When your planning tool's data feed breaks, every downstream decision is wrong.

Feature-by-feature: ReplenishRadar vs Inventory Planner

Capability	ReplenishRadar	Inventory Planner by Sage
Starting price	$99/mo (public)	~$245/mo (custom quote)
Pricing model	Fixed tiers, published	Revenue-based, quote-only
Contract	Month-to-month, cancel anytime	12-month with auto-renewal
Free trial	14-day, self-serve	Demo-led, sales call required
Setup time	~10 min (OAuth)	Days to weeks (sales + onboarding)
User seats	Unlimited, all tiers	Unlimited (included)
Shopify integration	Native OAuth, read-only	Native Shopify app
Amazon SP-API	Native, first-class	Limited, Shopify-first
FBA inbound plan creation	Yes, via SP-API	No
FBA transfer suggestions	Demand-driven with constraint math	No
FBA receiving time tracking	Per-fulfillment-center	No
Multi-store (same platform)	2+ Shopify, 2+ Amazon accounts	Shopify-focused
Demand forecasting	Per-SKU with accuracy scoring	Mature, configurable
Forecast accuracy validation	Predictions vs actuals, scored	Not a primary feature
Safety stock calculation	Automatic with lead time variance	Configurable
MOQ + casepack + order multiple	Automatic constraint stacking	Manual or limited
Supplier scorecard	Tracks stated vs actual lead times	Basic supplier data
Ordering cadence	Per-supplier weekly/monthly cadences	Not available
Purchase order workflow	Yes, with constraint math	Yes, detailed
Catalog triage	Resolution queue, duplicate detection	Not available
Profit intelligence	Lost sales, overstock cost, cash flow	Overstock flag, limited cash-flow view
AI agent integration (MCP)	MCP package	Not available
Sage stack integration	Not applicable	Native if on Sage/Brightpearl

What makes ReplenishRadar a better Inventory Planner alternative

The table shows feature presence. Here is why those gaps actually matter when you are running a business.

Your Amazon channel is not an afterthought

Inventory Planner treats Amazon as a data source. ReplenishRadar treats it as a planning problem.

That difference shows up in three places. First, FBA inbound plan creation through the SP-API. You are not copying quantities into Seller Central by hand. Second, transfer quantity math that accounts for FBA restock limits, receiving capacity, and your current inbound pipeline. Third, per-fulfillment-center receiving time tracking so you know that ONT8 checks in shipments in 4 days while MDW2 takes 12.

If you sell on Amazon, this is the single biggest gap in Inventory Planner. It is structural. It is not a missing feature that will ship next quarter. The product was built for Shopify and Amazon was bolted on later.

Your supplier performance is tracked, not assumed

You enter a lead time into Inventory Planner once. If that supplier starts shipping in 28 days instead of 21, your safety stock is wrong and your reorder points are stale. You find out when you stock out.

ReplenishRadar's supplier scorecard tracks actual delivery performance against stated lead times from your PO history. When the numbers drift, your reorder points and safety stock recalculate. I wrote about how lead time affects every downstream calculation if you want the math.

Your ordering schedule matches reality

Most inventory tools assume you can order from any supplier any time. That is not how it works. Some suppliers take orders weekly. Others only on the first Monday of each month. Some have fixed delivery windows.

ReplenishRadar factors per-supplier ordering cadences into reorder calculations. The system shifts from continuous review to periodic review math automatically. This is the difference between "order now" and "order now because the next window is 3 weeks away and you will stock out before then." Inventory Planner does not do this.

Constraint math is automatic, not manual

Here is a scenario every multi-channel seller hits: you need 847 units, but the supplier requires a minimum order of 500 with casepacks of 24 and you can only order in multiples of 6. What is the actual PO quantity?

ReplenishRadar resolves MOQ, casepack, and order multiple constraints simultaneously. No rounding errors. No manual calculator. Inventory Planner has basic MOQ support but does not stack multiple constraints in the same calculation.

You know your price before a phone call

ReplenishRadar publishes pricing on the website. $99/month for Standard (2,000 SKUs, 2 stores). $199/month for Growth (20,000 SKUs, 5 stores). $499/month for Scale (50,000 SKUs, 10 stores). Month-to-month. Cancel anytime.

Inventory Planner's pricing page asks you to submit your business details to "get my price." Annual contracts auto-renew with 30 days required cancellation notice. We have both prices public because we think you should be able to compare without giving anyone your phone number.

Pricing: the full picture

ReplenishRadar

Tier	Price	SKUs	Stores	Key features
Standard	$99/mo	2,000	2	Forecasting, FBA, POs, unlimited seats
Growth	$199/mo	20,000	5	Everything in Standard + 15-min sync
Scale	$499/mo	50,000	10	Everything in Growth + AI agent access, 5-min sync
Enterprise	Custom	Unlimited	Unlimited	2-min sync, custom onboarding

No setup fees. No seat limits. Cancel month-to-month.

Inventory Planner by Sage

Detail	Info
Pricing model	Revenue-based, custom quotes
Starting floor	~$244.99/mo
Contract	12-month with auto-renewal
Cancellation	30-day notice before renewal
User seats	Unlimited (included)
Trial	Demo-led evaluation

The starting floor for Inventory Planner costs more than double ReplenishRadar's Standard tier. And it scales up with your revenue, so the delta grows as your business grows.

What Inventory Planner actually does well

I am not going to pretend this is one-sided. Inventory Planner has been in market for over a decade and earns its 4.4-star rating on the Shopify App Store (145 reviews as of June 2026) for real reasons.

Mature Shopify forecasting. The demand model configuration has depth. Long-time users consistently praise accuracy once the tool is dialed in. If your team has an analyst who likes tuning forecast parameters, Inventory Planner gives them the knobs.

Sage stack integration. If you are already running Sage Intacct or Brightpearl as your system of record, Inventory Planner fits that stack natively. That integration matters.

Established user community. The tool serves 2,600+ brands on Shopify. There are people who have built entire purchasing workflows around it over years. That institutional knowledge is real.

If you are Shopify-only, have been on Inventory Planner for years, and your forecasts are running well, switching has a cost. Weigh that against the pricing trajectory and the Amazon gap.

What Inventory Planner users actually say (2025-2026)

These are sourced from G2, Capterra, and Shopify App Store reviews:

What people like:

• Forecasting accuracy is strong once properly configured
• Intuitive interface for purchasing workflows
• Reduces manual work for reorder decisions
• Multi-warehouse support on Shopify is solid

What keeps coming up as problems:

• Revenue-based pricing feels heavy for smaller operations
• Mandatory 12-month contracts with auto-renewal lock you in
• Shopify API syncing issues disrupted data and forecasts in late 2024 through 2025
• Support response times have been inconsistent post-acquisition
• No FIFO cost calculation by default. Limited cost methods
• Report exports do not include embedded images, only URLs

The syncing issue matters more than it sounds. When your inventory tool's data feed from Shopify breaks, every forecast, every reorder point, and every PO suggestion is running on stale numbers. You do not always notice until after you have placed the wrong order.

What changed after Sage took over

The corporate ownership chain matters because it affects pricing, roadmap, and support.

• September 2021: Brightpearl acquired Inventory Planner
• January 2022: Sage acquired Brightpearl (~$360M). Sage inherited Inventory Planner
• 2023: Product rebranded as "Inventory Planner by Sage"
• 2024-2025: G2 and Trustpilot reviews document renewal price hikes, often described as double to triple prior rates, with 12-month re-up requirements
• Early 2026: Public pricing tiers removed. All new customers go through a sales-led quote process

ReplenishRadar is independent. No parent company will roll up your pricing on a renewal cycle and no acquisition strategy will change product priorities mid-contract. $99, $199, or $499 per month, publicly posted and monthly cancel.

Switching from Inventory Planner to ReplenishRadar

The migration is simpler than it sounds.

What transfers automatically:

• Shopify sales history re-syncs directly via OAuth
• Amazon sales data syncs from SP-API (this is new data you did not have in Inventory Planner)
• Product catalog, variants, locations from Shopify
• Inventory levels across all connected channels

What you bring over manually:

• Supplier data (names, lead times, MOQs, casepacks) - export as CSV, import into ReplenishRadar
• Historical POs if you want them for reference
• Any custom forecast preferences (ReplenishRadar typically needs less manual tuning)

Realistic timeline:

Day	What happens
1	Connect Shopify + Amazon via OAuth. Import supplier CSV. ~10 minutes
2-3	ReplenishRadar populates forecasts and safety stock. Review against what Inventory Planner showed
4-14	Run both tools in parallel. Place 1-2 POs through ReplenishRadar to validate
15+	Cut over fully. Cancel Inventory Planner (remember the 30-day cancellation notice)

Most sellers are fully switched within 2-3 weeks. The technical setup is hours. The confidence-building parallel run is what takes the time.

When Inventory Planner is the right choice (not ReplenishRadar)

I do not want to waste your time if Inventory Planner genuinely fits better. Stay on Inventory Planner if:

• You are Shopify-only with no Amazon channel and no plans to add one
• You are deep in the Sage stack (Sage Intacct, Brightpearl) and need native integration
• Your team has a dedicated analyst who wants to tune demand model parameters and reporting cadences
• You have been on the platform 5+ years and your workflows are built around its specific PO and replenishment patterns

Those are real reasons. But if you are here because of pricing, because you need Amazon, or because you want to evaluate a tool without a sales call - those are the reasons ReplenishRadar was built.

The bottom line for Inventory Planner alternative seekers

Every day you are on a planning tool that does not cover Amazon, you are running two systems or flying blind on half your business. Every month you are on revenue-based pricing, the number goes up as you grow instead of staying flat.

ReplenishRadar covers Shopify and Amazon in one plan. $99 to $499 per month depending on your SKU count, published on the website, cancel anytime.

Start your free 14-day trial - connect your stores, see real forecasts and reorder suggestions in under 10 minutes. No sales call, no contract, no surprise renewal.

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Related Reading:

• Shopify Inventory Forecasting Guide
• Best Shopify Inventory Management Software
• Best Amazon FBA Inventory Tools
• Multi-Channel Inventory Challenges
• Lead Time Demand Formula for Reorder Points

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Sources

Competitor information is based on publicly available data as of June 2026. Features and pricing may change.

• Inventory Planner by Sage on Shopify App Store (pricing listing and reviews, checked June 2026)
• Inventory Planner pricing page (quote-based, no public tiers as of June 2026)
• Inventory Planner by Sage reviews on G2
• Inventory Planner on Capterra
• Inventory Planner Pricing breakdown on RevenueGeeks
• ReplenishRadar pricing and features pages