Rachii Geometry

Compass, ruler and geometry

$4.99

Explore geometry with a compass, ruler, protractor and set square on iPhone and iPad. Now with Thai, English, Simplified Chinese, Korean and Japanese. Turn your iPhone or iPad into a space for exploring geometric construction. Rachii Geometry places illustrated compasses, rulers, protractors and set squares on your canvas. Draw with your finger, or Apple Pencil on a compatible iPad. CONSTRUCT WITH VISIBLE INSTRUMENTS • Set and lock the compass radius, draw circles and arcs, swap its needle and drawing tip, and choose solid or dashed lines. • Use a pen along a ruler or set-square edge. Snap the ruler parallel or perpendicular to existing lines. • Measure angles with a 180° or 360° protractor that snaps to vertices and lines. CREATE AND EDIT • Name points and snap them to nearby lines and intersections. • Insert 48 figure templates: angles, triangles, quadrilaterals, polygons, circles, ellipses, solid wireframes and nets. • Set custom angles from 1 to 360 degrees, including decimals. • Select several objects to move, resize, recolor or delete together. • Erase just the area you rub, with undo and redo. KEEP AND SHARE YOUR WORK • Worksheets save on your device. Open earlier work from the library and restore worksheets from Trash. • A fresh launch starts with a blank canvas while keeping previous worksheets. • Export PDF, PNG or editable .rachiigeo backup files. • Explore equilateral-triangle and perpendicular-bisector examples and review construction steps. Choose Thai, English, Simplified Chinese, Korean or Japanese using the globe button. No account, ads, in-app purchases or subscription. Drawing and local worksheets work offline. Requires iOS/iPadOS 17 or later. Up to 500 objects per worksheet; imported backups up to 20 MB. Solid figures are 2D wireframes. Objects do not maintain dynamic geometry constraints. The app does not automatically sync worksheets across devices.

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Now available in Thai, English, Simplified Chinese, Korean and Japanese. • Tap the globe to change language instantly or follow your device language. • Localized tools, figure library, help and privacy policy. • Your language choice is remembered. Existing worksheets, point names and your text stay unchanged.

Version 1.1

The developer, Noppon Sukpirom, 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
    Noppon Sukpirom
    Size
    3.5 MB
    Category
    Education
    Compatibility
    Requires iOS 17.0 or later.
    • iPhone
      Requires iOS 17.0 or later.
    • iPad
      Requires iPadOS 17.0 or later.
    Languages
    English and 4 more
    • English, Japanese, Korean, Simplified Chinese, Thai
    Age Rating
    4+
    Copyright
    © 2026 Noppon Sukpirom
  • Privacy Policy

    • Supports

    • Family Sharing

      Up to six family members can use this app with Family Sharing enabled.

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