Launching today
CartMargin
Check your discounts against the costs you enter
1 follower
Check your discounts against the costs you enter
1 follower
An offline desktop-browser beta for physical-product sellers. Compare contribution before and after discounts, check bundles, and export results. Manual inputs, browser-local data, no AI or store integration. Contribution is not net profit. Broad compatibility testing remains limited. $29 USD once, plus applicable tax. 14-day money-back guarantee.
I made CartMargin to help sellers check a promotion before running it. Enter your own costs and compare discount assumptions. Results are contribution, not net profit or a prediction of sales. Export JSON backups to keep your work. Try the sample here: https://cartmargin-studio-20261027.red-mouse-4952.chatgpt.site