Ballet Protractor – Leg Angle

Measure your leg angle live

Free · Designed for iPad. Not verified for macOS.

Ballet Protractor is a ballet practice tool that measures your leg angles in real time with the camera. See exactly how many degrees your leg rises in a développé or split, and keep a record to track your progress over time. It also includes a Manual Protractor that measures any angle right on a photo — like your turnout. ■ Measures the angle between your legs Recognizes side développés as well as front and back extensions. ■ Real-time measurement + skeleton overlay Pose recognition draws your leg lines and the angle on screen in real time. Just step in front of the camera. ■ Record your practice on video Your best angle is shown live, and you can save the video to your gallery or share it. ■ Measurement history and progress chart Every session's best angle is saved automatically, with a thumbnail of that moment. Watch your angles grow at a glance on the chart. ■ Manual Protractor — any angle, on a photo Take a photo or pick one from your gallery, drag the V-shaped protractor into place, and measure any angle from 0 to 360°. For angles on the floor — like turnout — turn on the top-down fix: even a tilted shot is automatically straightened to a true top-down view for an accurate reading. Save or share the photo with the angle on it. ■ Offline · Privacy All measurement, video and photo processing, and record keeping happen only on your device. Recorded videos and photos leave the app only when you save or share them yourself. No sign-up required — measuring and recording work without internet. ■ Available in 5 languages Korean, English, Japanese, Russian, and French, shown automatically in your device language.

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Version 1.3.0

The developer, Jungmun Choi, 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:

    • Location
    • Identifiers
    • Usage Data
    • Diagnostics

Privacy practices may vary based, for example, 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

Provider
  • Jungmun Choi
Size
  • 62.4 MB
Category
  • Health & Fitness
Compatibility
Requires iOS 15.5 or later.
  • iPhone
    Requires iOS 15.5 or later.
  • iPad
    Requires iPadOS 15.5 or later.
  • iPod touch
    Requires iOS 15.5 or later.
  • Mac
    Requires macOS 12.4 or later and a Mac with Apple M1 chip or later.
  • Apple Vision
    Requires visionOS 1.0 or later.
Languages
  • English and Korean
Age Rating
4+
Copyright
  • © 2026 Ribbon and Bloom
  • Developer Website
  • Privacy Policy

    • More by Jungmun Choi

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