Get the app

Know it fits before you buy it.

Share anything you’re eyeing, from any store or app. Ryn tells you your size, how it will fit your body, and when there’s a better choice.

How it works

Shop the way you already do. Ryn checks the fit.

  1. 01

    See something you love

    On any store’s website or app, Instagram, Pinterest, or a link a friend sends you.

  2. 02

    Tap Share, then Ryn

    No copying links, no new store to learn. Ryn reads the page, the size chart and the reviews.

  3. 03

    Know before you buy

    Your size, how it will fit your body, the fabric and the value, and a better option when there is one.

What Ryn tells you

Lovely, but size down.

It runs big through the shoulder. In your usual M it would swamp you; the S sits where your shoulder ends and still closes over a sweater.

Like a friend with a fashion editor’s eye: warm, certain and specific about cut and cloth. Ryn never tells you not to buy something you love. It tells you the size that will work, and when there’s a better choice for your body.

Our approach

One eye, your measurements.

Your body, not a model’s

Ryn matches your measurements to each store’s own size chart, every time.

Your style leads

Ryn keeps to what feels like you, and finds better fabric and better fit within it.

Honest about value

Fibre, weight and price, in plain words. Ryn may earn a commission; it never changes what Ryn says.

Private by default

Your measurements are only ever used for your checks, and you can delete your account any time.

On your phone

Get Ryn for iPhone.

Free while Ryn is new. Check as many as you like, and keep the ones you love.

Coming soon to the App Store

On your laptop · Coming soon

Ryn for Chrome.

A small Ryn button on any product page. Tap it for your size and how it will fit, without leaving the store.