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PromoMath
- by James Builds
- $9/month. Free trial available.
- by James Builds
- $9/month. Free trial available.
Check your margin before launching a sale. See the safe discount limit on every product variant to protect your profits.
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About the PromoMath
PromoMath helps you check your profit margin before launching any sale or discount. Simply enter your desired discount percentage and set the lowest gross margin you're willing to accept. The app reads your live prices and cost per item directly from Shopify, then instantly sorts every product variant into four clear categories: Safe, Low margin, Losing money, or Missing cost.
You'll see the maximum safe discount for each variant, so you know exactly how far you can go without hurting your bottom line. Run the margin analysis on all products, a single collection, or just a few items. Export your results to CSV for easy review and planning.
No installation or syncing required—your data stays secure in Shopify. Requires Cost per item to be set in Shopify.
Launched: October 9, 2026
Key features
- Enter a discount and a margin floor, see every variant sorted in seconds
- Safe, Low margin, Losing money, or Missing cost on each variant
- Max safe discount per variant, so you know how far you can actually go
Category:
Pricing of PromoMath
PromoMath
$9 / month
- Safe, low margin, or losing money
- Max safe discount for every variant
- CSV export of every analysis
