get your perfect fit the first time around


it's as easy as 1,2,3
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now available at


How it works

Our Google Chrome plugin uses data from your previous orders' emailed receipts to aggregate your size across different stores. efitter then predicts your size at your favourite stores so you can make better decisions about your future purchases.

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Refresh your emails

When you refresh your emailed receipts, we'll skim through your old order confirmation emails and predict your average size across your favourite brands.


Sign up & download

Download the extension from the Google Chrome web store and sign in with your Gmail account.

screenshot of efitter chatbot on H&M page
efitter chatbot example conversation flow


Start shopping!

We're live on ZARA and H&M. Simply open the efitter chatbot while you shop to learn more about your favourite products and find your perfect fit!


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