TriDef 3D is described as 'Is DDD's solution for bringing 3D to everybody. It converts videos, games and photos from 2D to 3D - for PCs, TVs, mobile phones and tablets' and is an app. There are four alternatives to TriDef 3D for Windows and iPhone. The best TriDef 3D alternative is vorpX. It's not free, so if you're looking for a free alternative, you could try Vireio Perception or 3D Photo Maker.
vorpX is a 3D-driver for DirectX9-11 games that is specifically geared towards VR-devices like Oculus Rift and HTC Vive. Additionally to ‘making games 3D’ it offers various features to tackle many of the issues that arise when playing games on a VR headset that are not designed...
Vireio Perception are FREE open source VR drivers that let you take existing games, and play them in VR on new and upcoming solutions like the Oculus Rift and castAR. They work with both AMD and Nvidia graphics cards, and are non-proprietary in nature.
3D Video Converter from Convert-to-3D.com: Lightning Speed of Conversion, Stylish Design, Maximum 3D Effect
It is the easiest to use, and is the only one still continued. It also supports the most games