3 Best AI Tools for Amazon IPI Score & Storage Limits (2026)
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A low Inventory Performance Index (IPI) score doesn't just sit on a dashboard looking bad — it's the number Amazon uses to decide whether to cap how much inventory you're allowed to store in its warehouses. RestockPro is the tool most directly built around the factors Amazon actually measures. SoStocked goes further on forecasting but comes with an agency-style sales process rather than a self-serve signup. Sellerboard is the cheapest way in if restock alerts are what you need most. Before any of them, check the free dashboard Amazon already gives you — it's the only place your actual score lives.
Quick comparison
| Tool | Best for | Starting price | Free option |
|---|---|---|---|
| Amazon Inventory Performance dashboard | Seeing your real IPI score and storage limits | Free, built into Seller Central | Always available |
| RestockPro (eComEngine) | Targeting excess inventory, sell-through, and in-stock rate directly | reported from the hundreds/month, tiered by FBA order volume | 21-day free trial, no card required |
| SoStocked | Amazon-first demand forecasting at scale | demo-led; one report cites plans from roughly $250/mo | Request a demo |
| Sellerboard | Budget-friendly restock alerts + profit tracking | reported starting around $19/mo | Free trial |
1. RestockPro (eComEngine) — best for targeting the IPI formula directly
RestockPro's own help documentation walks through the IPI score the same way Amazon does — a 0-to-1,000 number built from excess inventory, sell-through rate, in-stock rate, and stranded inventory — and the vendor says the tool is specifically built to help with the first three. In practice that means restock suggestions that account for your supplier's lead time rather than just "you're low," margin calculations on every reorder so you're not restocking a SKU that's quietly lost profitability, and purchase-order creation so the recommendation turns into an actual order instead of a spreadsheet note.
The vendor's pricing scales with how many FBA orders your account processes monthly rather than a flat fee, and every tier reportedly includes the full feature set — no feature gating by plan. A 21-day free trial with no credit card required makes it a reasonably low-risk way to see whether the forecasting actually reduces your excess inventory before you commit. Try RestockPro.
Pros: built specifically around the same three levers Amazon scores, not a generic forecasting tool retrofitted to mention IPI; no feature gating between plan tiers; integrates with the Aura repricer. Cons: published pricing is scarce outside a sales conversation; a 4.0-star rating from a small review sample means you're relying mostly on the vendor's own claims about forecasting accuracy.
2. SoStocked — best for Amazon-first forecasting at scale
SoStocked is built around FBA mechanics specifically — reorder points, lead-time tracking, and purchase-order generation tuned to how Amazon's warehouses and storage categories actually work, rather than a generic multichannel inventory tool with Amazon bolted on. For a seller managing dozens or hundreds of SKUs across multiple storage categories, that Amazon-native modeling is the main advantage over a broader tool.
The catch is access: SoStocked is sold through a demo rather than a self-serve signup, and third-party reviews report pricing anywhere from roughly $97 to $250+ a month depending on which bundle and feature tier you land on — treat any number here as a starting point for a sales conversation, not a quote. Try SoStocked.
Pros: deep, Amazon-specific modeling of reorder points and storage categories; built for sellers who've outgrown spreadsheet-level planning. Cons: no transparent, self-serve pricing page; third-party pricing reports are inconsistent enough that you should get a real quote before comparing it against the other two.
3. Sellerboard — best budget entry point
Sellerboard is best known as an Amazon profit-analytics dashboard, but its inventory feature does the restock-and-reorder job on a tighter budget than the two tools above. You enter your production and shipping lead times once, and it calculates your current selling speed, days of stock remaining, and a recommended reorder quantity — plus a check that flags when the quantity you actually shipped to Amazon doesn't match what Amazon received. For a seller who wants restock alerts without paying for a dedicated FBA-forecasting platform, it's a reasonable middle ground.
Third-party listings put Sellerboard's plans starting around $19 a month, with inventory management included rather than sold as a separate add-on — confirm current tiers on Sellerboard's own pricing page before you commit. Try Sellerboard.
Pros: restock alerts bundled with profit tracking you'd likely want anyway; the cheapest of the three starting prices; flags inbound-shipment mismatches most inventory tools don't check. Cons: less purpose-built around the IPI formula specifically than RestockPro; forecasting depth is lighter than SoStocked's for sellers running a large, complex catalog.
The free baseline: Amazon's own Inventory Performance dashboard
Before paying for any of the above, open Seller Central's Inventory Performance dashboard yourself — it's the only place your actual IPI score lives, broken down by the same factors every third-party tool is estimating from the outside. It shows excess inventory by SKU, your sell-through rate, in-stock rate, and current storage limits by category, all for free. What it doesn't do is forecast forward or generate a purchase order for you; it tells you where you stand today, not what to order next week. Sellers have discussed exactly this gap on Amazon's own Seller Forums — the dashboard shows the damage, but closing it is still a manual decision unless you add a forecasting layer on top.
How to choose
- You want a tool built around the exact factors Amazon scores: RestockPro, for excess inventory, sell-through, and in-stock rate specifically.
- You're running a large, complex FBA catalog and want deep Amazon-native forecasting: SoStocked, after a demo call to confirm pricing fits.
- You're watching every dollar and mainly need restock alerts: Sellerboard, bundled with profit tracking you'll use anyway.
- You're not sure you need a paid tool yet: start with the free Inventory Performance dashboard and the free Restock Inventory report, and upgrade once manually checking every SKU every week stops being realistic.
Whichever you pick, remember the limit itself is set by storage type, and Amazon's own thresholds move with market conditions — a tool that got your score comfortably above the line six months ago isn't a guarantee it still is today. Pair any of these with our best AI tools for Amazon FBA liquidation and overstock removal guide for when excess inventory has already piled up, our best AI inventory forecasting tools for ecommerce roundup if you sell beyond just Amazon, and our broader best AI tools for Amazon FBA sellers guide for the rest of the stack around inventory — PPC, repricing, and listing optimization.
Frequently asked questions
What is a good Amazon IPI score in 2026?
Amazon doesn't publish a fixed target, and the number that triggers storage limits has moved over time — seller guides commonly cite roughly 400 as the current action threshold, with scores well above that considered safe. Treat any number you read in a blog post, including this one, as directionally useful rather than official; your own Inventory Performance dashboard in Seller Central is the only place that shows your real score and the limits tied to it.
How often does my IPI score update?
Sources disagree on the exact cadence, which is itself a sign Amazon doesn't publish one precisely. Some seller guides describe a rolling weekly calculation using roughly the trailing 13 weeks of data; others say storage-limit assessments happen on a longer cycle, closer to quarterly. Either way, a single bad week of overstock won't tank your score overnight, but it also won't recover overnight — these tools help you make the next few weeks of reordering decisions better, not fix last quarter's mistake instantly.
Can software actually raise my IPI score, or does it just report it?
The tools worth paying for act on the same three levers Amazon scores — they recommend smaller, more frequent reorders to cut excess inventory, flag SKUs with a falling sell-through rate before they drag the score down, and warn you before a popular SKU goes out of stock. None of them can edit the score directly or negotiate with Amazon; they just help you avoid the purchasing decisions that lower it in the first place.
Do I need a paid tool, or can I fix my IPI score for free?
If you're a smaller seller with a manageable number of SKUs, you can work the problem for free using Seller Central's own Inventory Performance dashboard and Restock Inventory report — both show you exactly which SKUs are excess or at risk of going out of stock. A paid tool like RestockPro or Sellerboard earns its subscription once you have enough SKUs that checking each one manually, every week, stops being realistic.