I started two projects, but did not have time to finish and polish either one of them. 
Anyway, I have two working (and maybe even interesting to someone) pieces of software, so I put them here. :)

Caterpillar logic
"Caterpillar logic" is a small, challenging, and (I hope) interesting game of inductive reasoning. Rules inside!  :)

L-Systems studio
I wanted to make the tutorial about L-Systems something like http://www.nahee.com/spanky/www/fractint/lsys/tutor.html, but interactive;
I did not reach my goal, but I think that the product in its current state may be interesting for those who like fractal graphics.  

Features available in current version of product:
1) Autoscaling - scaling fractal to fit the containing widget
2) Animation - user does not wait to the end of fractal calculation process, he can watch it animated 
3) Full compatibility with *.l format -  files that Fractint and XFractint use. (I included some interesting *.l files, as far as I understand, they are free to use, got them from - http://www.nahee.com/spanky/pub/fractals/lsystems/ )
4) Editor - User can edit the fractal and watch changes in real time. She can visualize entire fractal or individual rule.
   Save function is not available yet.


Michael Fuks
beginnning kivy developer :)

If you have anything to say to me: fuks.michael@gmail.com

Update: 

now you can download the game from Play Store:
https://play.google.com/store/apps/details?id=org.gromozeka1980.caterpillar_logic