Dravidy

Dravidy is a simple application for tablets and smartphones that lets you play with the behavior of particles under the influence of gravity using Newton's equations simplified.
Originally created to relax my little baby, the app has grown to become an app that shows the gravitational movement in a relaxing and simple way.
The user can add fixed / mobile particles with mass and 'massless' particles hitting or dragging on screen and see how it evolves the dynamics between them in this sandbox.

Watch the demonstration video: http://www.youtube.com/watch?v=LWbk9usJkms

New in version 2.7:
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- Changes in some parameters
- Minor changes in the colors of the particles
- Welcome Screen

New in version 2.6:
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- Parameters changes.
- Background pics.

New in version 2.5:
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- Minor parameters changes.

New in version 2.4:
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- Added trails of mobile mass particles.
- New type of particle: mobile repulsive mass.
- Fixed help text.

New in version 2.3:
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- Background music: 3 original songs composed by myself. (I'm not a musician. Do not expect to see the songs at the Grammy Awards...)
- New type of fixed object: Square blockers. The mobile particles will bounce on it, changing the dynamics of the system.
- New ways of adding particles to the system.
- Increased the number of possible values ​​of the configurable parameters.