Otja: Photo Clothing Measure

Garment sizes from one photo

Only for iPhone

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

iPhone

Photograph your garment next to an A4 sheet of paper or a credit card. Otja uses the reference object's real size to compute the photo's scale, so connecting two points on the photo gives you real measurements. No tape measure needed. ■ Photos never leave your device There is no server. All processing happens on your device, and your photos and measurement records are never uploaded. ■ Built for secondhand sellers Get the length, shoulder width, and chest width you need for listings on eBay, Depop, Poshmark, Vinted, Mercari, and more — from a single photo. Then: · Copy the size chart as text and paste it into your listing · Save or share an image with the measurement lines drawn on it · Keep a record per item ■ Keep a record of your own clothes Measure the clothes that fit you best and keep them on file. Next time you shop online, compare the listing's size chart with your own measurements — fewer sizing mistakes, fewer returns. ■ How it works 1. Place an A4 sheet or a card on the same flat surface as the garment and take one photo. 2. Otja finds the reference's four corners and corrects perspective. If auto-detection struggles, tap the corners yourself. 3. Pick a category to get measurement slots like shoulder width, chest width, and total length. 4. Connect two points to see the value in cm or inches. ■ About accuracy Accuracy depends on how you shoot. Lay the garment flat, keep the reference on the same surface, and shoot as close to straight-down as you can. A large reference like A4 paper is recommended. The app warns you when choosing a small reference like a credit card, as long measurements may be less accurate. ■ Otja Pro (optional) A single one-time purchase unlocks unlimited records, custom reference objects, all measurement templates, and watermark removal. Core measuring is free.

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This update makes capturing and measuring more accurate and convenient. • New in-app camera with a built-in level and reference-object placement guide • Separate buttons for taking a photo and choosing from your album • More accurate automatic garment outline detection, even in photos with lots of background • Can't extract an outline? Measure the selected area as-is with one tap • A warning now appears when the reference object and garment are at different distances • Saved cutout images no longer include extra background margins • Various UI polish and stability improvements

Version 1.1

The developer, YOUNGGEUN OH, 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 Linked to You

    The following data may be collected but it is not linked to your identity:

    • Usage Data

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
  • YOUNGGEUN OH
Size
  • 28 MB
Category
  • Utilities
Compatibility
Requires iOS 15.0 or later.
  • iPhone
    Requires iOS 15.0 or later.
  • iPod touch
    Requires iOS 15.0 or later.
  • Mac
    Requires macOS 12.0 or later and a Mac with Apple M1 chip or later.
Languages
  • English
Age Rating
4+
In-App Purchases
Yes
Copyright
  • © 2026 Young Oh
  • Privacy Policy