Missing Cost Audit vs Margin Sentinel
Two Shopify apps, side by side: detected stores, momentum, reviews, plans, listed features and who runs each. Store counts as of Oct 14, 2026.
The short answer
- Both list a free plan. Paid plans start at $29/month for Missing Cost Audit and $15/month for Margin Sentinel.
- Missing Cost Audit and Margin Sentinel list the same 1 features.
Head to head
Free
- · CSV export, no SKU limit ever
- · Finds every variant with no cost
- · Ranks the gaps by revenue distorted
- · Sales and catalogue coverage
Keep
- · Alerts and nightly email digests
- · Import your cost history
- · Margin as a range, not a guess
- · Set costs in the app
- · Set one cost for a whole product
- · Verified, estimated, unknown per sale
Pro
- · Auto-restore cleared costs
- · Compares each price list to the last
- · Cost drift: what changed, by whom
- · Everything in Keep
- · Full order history, not just 60 days
- · Landed cost by SKU over time
Free
- · Export a fix list
- · Find missing unit costs
- · Scan up to 100 variants
Starter
- · Import supplier costs by CSV
- · Minimum price, what-if and alerts
- · Scan up to 5,000 variants
Growth
- · Import supplier costs by CSV
- · Minimum price and what-if checks
- · Scan up to 25,000 variants
- · Weekly alerts and priority support
Coverage counts what each App Store listing names. Every feature, checked off app by app, is in Shoplist.
See every featureWhen a product has no cost per item, Shopify reports that cost as $0.00 and books the whole sale as profit. It does not warn you. On a store where half the catalogue is missing costs, Shopify's own AI calls the margin "healthy". Free, forever, no SKU limit: find every variant with no cost, see how much recent revenue has none behind it, and export the list.
Open Margin Sentinel once and it automatically checks up to 100 Shopify variants using current price, unit cost, and inventory. See the exact SKUs with missing costs, negative gross margin, or prices below your target, plus what to fix first. Free includes cost repair, one guided supplier CSV import, discount scenarios, and fix-list export. No card, order data, or automatic changes.
- Finds every product variant with no cost recorded, in seconds
- Ranks gaps by impact, so you fix the few that matter, not all of them
- Never asks for your customers' names, emails, phones or addresses
- Variant scan finds margin leaks and highlights issues like missing data.
- Supplier data templates and CSV imports to fill missing variant information.
- Scenario analysis to model catalog changes and measure impact on margins.
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 |  Missing Cost Audit |  Margin Sentinel |
|---|---|---|
| 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 | Missing Cost Audit | Margin Sentinel |
|---|---|---|
| App Store rating | Not published | Not published |
| App Store reviews | Not published | Not published |
| New reviews, 28 days | Not enough data | Not enough data |
| Reviewers a year or more in | Not enough data | Not enough data |
Pricing
| Measure | Missing Cost Audit | Margin Sentinel |
|---|---|---|
| Free plan | Yes | Yes |
| Lowest paid monthly plan | $29/month | $15/month(ahead) |
| Longest free trial | Not listed | 14 days |
| Plans listed | 3 | 3 |
Listing
| Measure | Missing Cost Audit | Margin Sentinel |
|---|---|---|
| Shopify category rank | #1317 | #370 |
| Shopify App Charts | Not on this week’s charts | Not on this week’s charts |
| Built for Shopify | No | No |
| Launched | Sep 21, 2026 | Jun 22, 2026 |
| Languages | 1 | 1 |
| Developer | Kelbra Business Solutions LLC | Profit Guard |
FAQ
Missing Cost Audit and Margin Sentinel: common questions
- Is Missing Cost Audit or Margin Sentinel cheaper?
- Both list a free plan. Paid plans start at $29/month for Missing Cost Audit and $15/month for Margin Sentinel. Shoplist compares base prices only between monthly plans in the same currency; usage charges and annual plans vary, so check each plan’s limits.
- 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 14, 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 14, 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.