Model D is a free form tool designed by educators to assist elementary students in drawing block diagrams (also know as models) with ease to solve mathematic problems. The model drawing approach has proven to be a successful problem solving heuristic in the education of mathematics worldwide, particularly in Singapore.

Say goodbye to paper and pencil doodles. This tool brings model drawing to life through an interactive, colorful and fun experience. Features of this initial launch version include:

- Add blocks (limit to 6 for lite version)
- Add customized labels (limit to 6 for lite version)
- Add arrows (limit to 6 for lite version)
- Change block colors
- Use the pinch gesture to resize blocks and arrows
- Save your favorite models to be used later
- Email block diagrams/models to friends and teachers for Model D
- Save block diagrams/models into photo gallery for Model D

*Discount for Model D App for educational institutions when multiple copies are purchased at once.