The recent rise of garage sale resellers and thrift store flippers empowers everyone to give items a second chance while exploring our entrepreneurial drive. From vintage film cameras to '80s vintage shirts to a set of tools, flippers keep items out of landfills all while finding them new loving homes.

With Margin is a simple, yet effective profit and loss estimator allowing anyone on the go quick access to determine a find as a possible hit or miss. Utilizing six input fields, quickly enter your reasonable educated guess for the amount it could sell for. Next, subtract shipping, cost, marketplace fees, and payment processing fees (if you're selling online). If profitable based on your industry knowledge, you can quickly act upon it with better confidence.

Need to reset all values suddenly? Double click anywhere on the input boxes!

What’s New

Version 1.5

1.5 is the most extensive update yet! This new version introduces a welcome screen and the new Custom Calculations tab. When installing for the first time or after an update, a welcome screen will highlight new features or the app’s functionality. On the new Custom Calculations page, easily create complex project calculations, including both fixed and percentage-based costs. If you have a minute, please consider taking the time to write a review. Thank you for downloading With Margin!

Ratings and Reviews

4.6 out of 5
11 Ratings

11 Ratings

Whitlkw ,

Great tool and potential for further features

Great tool to quickly calculate margins. One potential added functionality could be a search option by product and recommended numbers for each data point. It could recommend based on platform and or location as well. Example, cost of selling using Craigslist in San Fran CA. If the user is unsure of the rate to enter it could help fill in some of the data with estimates.

Developer Response ,

Hello there! Thank you for taking the time to write a review and download the app. It is nice to hear it has been valuable for you!

lincolsonoln ,


Love love love it!

As an eBay flipper, I’m always trying to calculate whether or not an item is going to make money. It gets complicated trying to calculate the different platform fees and subtract shipping while keeping the selling price in your head. With Margin makes it extremely simple to type in all the numbers and tell you quite elegantly if it’s a flip worth making!

Highly recommend!

Developer Response ,

Hello! Thank you very much for taking the time to write a review and download the app. It is nice to hear it has been valuable for you!

Bankerted ,

A Great Selling Tool

This app provides a tool to allow user to determine whether a “flip” of an item is timely. Assuming some control over selling costs, you may determine to hold the item until costs become more favorable. The app provides quick (potential) profit in a flip.

App Privacy

The developer, Hunter Smit, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Collected

The developer does not collect any data from this app.

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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