Enables viewing of 3D-images in various formats.

You can view 3D-images also directly from the web pages (and play slideshow) and by dragging them from other applications.

Supports MPO files, Side by Side, Top/Bottom and interleaved stereo pairs in JPG, JPS, PNG, TIFF, animated GIF files and anaglyphs as source format. Left and Right sides can be in two different files. Classic stereo cards scans are also supported.

You can view stereo pairs in MPO containers produced by Fujifilm Real 3D W3, Nintendo 3DS, HTC smartphones with stereo cameras, Sony cameras with 3D functions and other.

3D viewing is available in several modes including:
• Stereogram for Cross and Parallel viewing methods
• Stereogram for Top/Bottom viewing method with special glasses
• different kinds of Anaglyph mode for Red/Cyan and Green/Magenta glasses
• Left or Right eye only
• Vertical and Horizontal Interlaced modes for 3D monitors with polarized glasses
• 3D TV mode (half Side-by-Side and Over/Under) including 4K screen support
• Convenient special mode for viewing Classic stereo cards
• Special mode for triple Left-Right-Left images that could be found on the web
• Simple Stereo card emulation viewing mode
• Left-Right animation view mode (see Preferences for some options)
• zoom up to 100% and pan through the whole image in all modes
• view 3D-image sequences directly from the web pages

Slideshow mode with various effects and adjustable time interval.

Use Right and Left arrow keyboard keys or onscreen Navigation buttons to view all images in the current folder.

Touch bar support.

Export 3D views in to JPG, PNG TIFF of GIF files in any supported mode preserving all metadata and alpha channels. Export options stores separately from the current viewing mode options, so you can view images in one comfortable mode and export with another.
Batch mode allows you to convert multiple files with the same options (from web page or from disk folder).
Export feature including batch mode available for all for free with Demo watermark. Export feature without Demo watermark available through In-App purchase.

Please note: Playing 3D video files is not supported!

What’s New

Version 4

• Touch bar support
• Left-Right animation view mode added (see Preferences for some options)
• New export options: animated GIF and animated PNG! Please note that you can view animated PNGs only in web browsers
• Improved compatibility with macOS Sierra (10.12)
• Dragging images from Photos, Mail and some other apps now works correctly
• Now you can drag and drop folder on to the app's icon or in to the app's window to open files from inside it (long awaited feature, I know)
• Improved opening of webpages
• Improved title visibility for interleaved mode
• Fixed: in some cases app may not save some options
• Improved overall stability

Ratings and Reviews

4.0 out of 5
4 Ratings

4 Ratings

3dTinkerer ,

XstereO Player

I just downloaded free XstereO and bought a LG D2342P monitor to view 3d stereo images from my MacBook Pro. This monitor uses horizontal interlace with passive glasses to view 3d. I needed some way to play my 3d stereo image pairs without using Bootcamp or Windows. XstereO Player does exactly what I need most--that is to display 3d side-by-side images interlaced so they can be shown without parallel or cross-eye viewing. It works perfectly, although version 1.0 only can view a single image (one L-R side-by-side pair) at a time. It can open a variety of image formats and display them in 3d using anaglyphs or interlacing. For this monitor to display full-color stereo, it interlaces one image into even horizontal lines superimposed with the other image in the odd horizontal lines. It has a check box to switch between Left/even-Right/odd or Right/even-Left/odd horizontal lines. Future versions could include new features, such as the ability to do a slide show or work with separate left and right images, for example. I give it four stars because it works well. I haven't found any other similar application for Mac. Being a free download from Apple is also important. Thank you Yuri golubinsky and Apple.

NoahSpurrier ,


The main selling point is that it's free, but it's missing some key features. It only opens single images where it assumes one image contains both left and right frames. It DOES NOT allow you to open image pairs -- that is, two separate images where one file contains the left image and the other contains the right image. Without that feature this app is pretty useless to me! It could also use an image browser. Opening each image one at a time is a pain. It has a "Navigate" app menu bar item with pull-down options to view next and previous, but these are nearly useless on the menu. These options should arrows or something on the viewing window. The LEFT and RIGHT keys on the keyboard do perform this feature, so it's not too bad, but it would be nice to navigate with the mouse. The options to render a stereo view in different formats look good. It lets you choose from a wide variety of side-by-side, interlaced, and anaglyph. Although, it is missing other anaglyph colors besides red/cyan. Granted, I never use anything besides red/cyan... All in all, this is a free app and looks to be a good start. I'd give it an extra star if it could open image pairs. I'd give it another start if it could fine-tune alignment.

GPS Mike ,


My interest is in viewing pictures taken with my Fuji 3DW3 on my computer screen and in creating stereo cards for viewing with a stereoscope. This app is perfect for both, but in particular for printing stereo cards. Several different themes are offered to match different traditional styles of stereo cards, as well as customized text on the bottom of the right hand image and text or a custom logo on the sides of the card. When I had a question about inserting a custom logo, the developer answered my question promptly (drag and drop your graphic file into the display box on the app). The position of the stereo image in the left and right windows can be adjusted, as can the position of your text or logo on the sides. The stereo image can also be adjusted with sliders for sepia, hue, saturation, contrast and exposure to give an antique effect or preserve the full color of the original. Wow! The full functionality of the app can be tested for free, and the in-app purchase to remove the watermark from exported files is reasonably priced. Enthusiastic five stars!


Yury Golubinsky
3.1 MB

OS X 10.11 or later, 64-bit processor



Age Rating
In-App Purchases
  1. Export feature $11.99


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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