Pixelglow Software has updated Instaviz (http://instaviz.com), diagram sketching software for the iPhone and iPod touch, to version 1.9. The upgrade adds support for the iPhone and iOS 4.

Instaviz uses a new shape recognition engine based on advanced fuzzy logic and trained on over 2,500 sketches drawn by real users. It’s the “sidekick” of Instaviz on the Mac OS X and Windows platforms. Users can extract their Instaviz diagrams by selecting them from their iPhone and iPod touch backups, then exporting or printing them.

Instaviz 1.9 costs US$9.99 and available worldwide exclusively through the Apple App Store in the Business category. The single download will work on iPad, iPhone and iPod touch. Existing users can upgrade for free.