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Tired of the hassle of manually calculating profit margins every time?

With the [Profit Margin Calculator], simply input the purchase cost without complex formulas, and it instantly displays a list of selling prices by margin rate—ranging from 15% to 50%—which is what business owners look for most.

✅ Highly recommended for:

Beginner business owners preparing to sell on e-commerce platforms like Smart Store or Coupang

Those who need to determine selling prices immediately at the source in Dongdaemun or Namdaemun markets

Those who are confused about the difference between margin and markup and need accurate profit calculations

Those looking for a clean, ad-free calculator app

✅ Key Features

Real-time Calculation: As soon as you input the cost, the margin selling price automatically updates in 5% increments (15%~50%).

Intuitive UI: All information is displayed on a single screen, allowing you to check the total profit margin with a single scroll.

Precise Alignment: Readability has been maximized with a 'sharp alignment' layout reflecting feedback from business owners. Free Service: You can use all features for free without any restrictions.

✅ How to use?

Launch the app.

Enter the product's purchase cost in the input field at the top.

Check the selling price corresponding to your desired profit margin in the list below.

That's it! Now, sell confidently at the determined price.

With the [Profit Margin Calculator], you will no longer be losing money.

Download it right now to protect your valuable profits!