SizeSnap: Ring Sizer & Shoes

Shoe size chart & converter

Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.

Measure your ring size on screen with a ring or a paper strip: US, UK, EU, JP and more. Every shoe and clothing size for your family, on iPhone and Apple Watch. Find your ring size in 30 seconds, right on your iPhone screen. Then keep every size of your family in one place: shoes, clothing, jeans, rings and hats, converted between US, UK, EU and Japanese sizes. RING SIZER • Place a ring that fits on the screen and match the circle to its inner edge • No ring? Wrap a paper strip around your finger and lay it on the on-screen ruler • Get your size in US, UK & Australian letters, EU/ISO, Japan & China, Italy, Spain & Switzerland, plus the diameter and circumference in mm • Real millimetres on every iPhone; double-check with any bank card in seconds • Between two sizes? SizeSnap recommends the larger one • Send your ring size to a jeweler, or to whoever is choosing a gift EVERY SIZE CHART Men's and women's shoes (EU, US, UK, JP and foot length), kids' shoes with ages, men's and women's clothing, jeans, rings and hats. Searchable and offline. Shoe sizes follow the major brand charts. YOUR FAMILY'S SIZES Save sizes for yourself and one more person for free. Shopping for your partner or your kids? Their sizes are one tap away. ON YOUR APPLE WATCH Turn the Digital Crown to convert any size on your wrist, and keep your sizes on your watch face. Works without your iPhone. SIZESNAP PRO: ONE-TIME PURCHASE Unlimited family profiles, size cards to share, and your ring measurement history. Family Sharing included. No subscription. PRIVATE BY DESIGN No account, no ads, no tracking, no camera. Works offline, and your sizes stay on your devices. Sizes vary by brand, so use SizeSnap as a guide. For an engagement ring, confirm the size with a jeweler.

Ratings & Reviews

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• New Ring Sizer: measure your ring size on the screen with a ring or a paper strip • Ring sizes in US, UK & AU letters, EU/ISO, Japan & China and Italy, Spain & Switzerland, up to US 16 • Corrected US and UK shoe sizes to match the major brand charts • SizeSnap is now free. Optional SizeSnap Pro for families: unlimited profiles, size cards and ring history • Now in 12 languages

Version 1.1

The developer, Denys Khomenko, 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

    Accessibility

    The developer has not yet indicated which accessibility features this app supports. Learn More

    Information

    Seller
    Denys Khomenko
    Size
    4.4 MB
    Category
    Shopping
    Compatibility
    Requires iOS 17.0 or later.
    • iPhone
      Requires iOS 17.0 or later.
    • Mac
      Requires macOS 14.0 or later and a Mac with Apple M1 chip or later.
    • Apple Watch
      Requires watchOS 10.0 or later.
    Languages
    English and 11 more
    • English, Dutch, French, German, Italian, Japanese, Korean, Polish, Portuguese, Simplified Chinese, Spanish, Turkish
    Age Rating
    4+
    In-App Purchases
    Yes
    Copyright
    © 2026 Denys Khomenko
  • Developer Website
  • Privacy Policy

    • Supports

    • Family Sharing

      Some in-app purchases and subscriptions may be shareable with your family group when Family Sharing is enabled. Learn More

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