CostSentry: Margin Alerts vs Master Margins
Two Shopify apps, side by side: detected stores, momentum, reviews, plans, listed features and who runs each. Store counts as of Oct 14, 2026 for CostSentry, Nov 7, 2026 for Master Margins.
The short answer
- Both list a free plan. Paid plans start at $19/month for CostSentry and $19.99/month for Master Margins.
- CostSentry lists 5 features Master Margins’s listing doesn’t mention, including Bulk editing, Price alerts, Price history.
Head to head
Free
- · 1 supplier
- · 1,000 SKUs under watch
- · Weekly email digest
Starter
- · 10,000 SKUs under watch
- · 2 suppliers
- · Instant and daily alerts
- · One-click cost write-back
Pro
- · 100,000 SKUs under watch
- · 5 suppliers
- · Everything in Starter
Enterprise
- · 1,000,000 SKUs under watch
- · Everything in Pro
- · Unlimited suppliers
FREE
- · Overhead tracking
- · Product pricing calculator
- · Saved suppliers
- · Up to 10 saved products
- · Up to 25 materials
Premium
- · Bulk sync to update all listings in one
- · CSV export
- · Priority support
- · Saved pricing history
- · Sync unlimited variants per product
Pro
- · Material dependency recalculations
- · Shopify price sync
- · Sync up to 5 variants per product
- · Unlimited materials
- · Unlimited saved products
Coverage counts what each App Store listing names. Every feature, checked off app by app, is in Shoplist.
See every featureShopify keeps one cost per item, with no history and no supplier link. When a supplier raises prices, the field goes stale and profit reports drift. CostSentry tracks supplier price lists in your admin. Upload a CSV or XLSX file: rows match your catalog by SKU or brand and part number, get compared with the previous list, and every change shows its margin impact at current retail.
MasterMargins helps merchants price products profitably instead of guessing. Save materials and monthly overhead once, and every product cost updates automatically. Build a full cost breakdown per product and variant, see the suggested price for your target margin, and sync it to Shopify with one click. When a material cost changes, affected products are flagged for review so pricing stays accurate.
- Import supplier price lists from CSV or XLSX with saved column mapping
- See every cost change with margin impact at your current retail prices
- Flag SKUs below your margin floor with a suggested new retail price
- Update cost per item in Shopify in one click, per SKU or in bulk
- Save materials and monthly overhead once — product cost updates automatically
- See a full cost breakdown per product, including materials, labor, and overhead.
- Get the suggested price needed to hit your target margin on every product.
- Price every size and color combination individually, with shared materials.
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 |  CostSentry |  Master Margins |
|---|---|---|
| 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 | CostSentry | Master Margins |
|---|---|---|
| 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 | CostSentry | Master Margins |
|---|---|---|
| Free plan | Yes | Yes |
| Lowest paid monthly plan | $19/month(ahead) | $19.99/month |
| Longest free trial | 14 days | 7 days |
| Plans listed | 4 | 3 |
Listing
| Measure | CostSentry | Master Margins |
|---|---|---|
| Shopify category rank | #364 | #157(ahead) |
| Shopify App Charts | Not on this week’s charts | Not on this week’s charts |
| Built for Shopify | No | No |
| Launched | Aug 19, 2026 | Aug 4, 2026 |
| Languages | 1 | 1 |
| Developer | StoreSentry | Trendy Fabrics |
FAQ
CostSentry and Master Margins: common questions
- Is CostSentry or Master Margins cheaper?
- Both list a free plan. Paid plans start at $19/month for CostSentry and $19.99/month for Master Margins. Shoplist compares base prices only between monthly plans in the same currency; usage charges and annual plans vary, so check each plan’s limits.
- What features does each app list that the other doesn’t?
- CostSentry lists 5 the others don’t mention, such as Bulk editing, Price alerts, Price history, Price tracking. A feature missing from a listing may still be supported; this compares what each App Store listing says.
- 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 for CostSentry, Nov 7, 2026 for Master Margins; 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 for CostSentry, Nov 7, 2026 for Master Margins. 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.