Noumenal

Noumenal is an elegant and fast 3D solid modeling app for iOS.
- Inspired by VR, it's as if you can reach right through the glass.
- Uses a solid modeling kernel designed from the ground up for high quality graphics, capable of updating 120 times per second.
- Push 3D shapes into place as if they were real, solid objects using a custom, high performance physics engine.
- Noumenal automatically texture maps exported shapes, so they are ready for texture painting.
- Noumenal supports USDZ, glTF, and STL formats, in addition to its own lossless compact format (FCT).
- Noumenal produces solid models, ready for 3D printing.
All features can be used for free except exporting to USDZ, glTF, and STL, which require a subscription. Images and FCTs can be shared for free.
Terms of Use: http://www.apple.com/legal/itunes/appstore/dev/stdeula