This is a great standard version 3D ACIS(.SAT or .SAB format) model viewer for iPhone. ACIS is the most popular 3D modeling kernel used by many 3D applications, including CATIA, ProE, SpaceClaim, SolidWorks, etc. The data format (sat or sab) is supported by almost all main stream CAD/CAM/CAE softwares. With help of this app, you can view your 3D model anywhere you want, no matter you are at home or traveling abroad.The app provides many 3D features including rotating model with finger movement, zooming in/out, panning, changing color, changing light intensity, etc. You can also choose to display it in shading model, or wireframe mode. The app supports loading multiple models at the same time so that you can view them together. It is extremely helpful when you want to compare your data sets to make sure everything works correctly. You can also use the app to figure out basic dimensions of your model, for instance, the length along x, y or z direction, total surface area, total volume, etc.The app supports rendering 3D objects on top of different background, for instance, you can change background color, make it transparent or use an image as background. You can choose any image to be the background image. For instance, you can use model environment image, or your company's logo.The app also provides you strong 3D data exporting capability. You can export 3D model in STL, DAE, DXF, OBJ and ATD format.You can add files to the app's document folder through iTunes and use the file open button of the app to load them. Please see instruction in the help page of the app about how to add files through iTunes to the app if you are not familiar with it already. You can also use the app to open 3D files you received as email attachment. Just tap on the attachment in you email app, the 3D viewer would be launched automatically. Or you can use it to open 3D files from third party file management app, like DropBox, etc.The app is also a file organizer. It provides you many features to help you manage the files, including sorting, deleting, creating new folders, moving files between folders, etc. The app provides zip and unzip function. You can use it to zip / unzip compressed files in .zip format. The app also tells you information about your files, for instance, the size and creation time of the files. If you need share with your friend, coworker, client or partner, you can use in-app email feature to send your model out as email attachment.The app provides native support for you to view documents in many different formats, including Microsoft Words (.doc, .docx), Excel (.xls, .xlsx), PowerPoint(.ppt, .pptx), Apple Numbers (.numbers), Pages(.pages), Keynote(.key), Adobe PDF (.pdf) and multimedia files including image (.png and .jpg) and video (.mov,.mp4,.3gp). This way, you can manage and view not only 3D files, but also other files of your project.The app provides unique in-app reviewing feature. You can easily take screen-shot of your file (3D or office document), draw your comment on the screen-shot and email it to your friends. The app supports many drawing elements, including free form, line, text, rectangle, circle, ellipse, etc. It supports undo/redo.The app is part of ATView3D 3D data visualization tool family developed by Afanche Technologies. If you need iPhone or iPad app for other 3D file formats, for instance,iges, stl, 3ds, obj, vrml, ply, etc, please search Afanche to find more 3D oriented apps. Afanche is a company specialized in 3D technologies. For more info, please visit our website http://www.afanche.com.