Projects

My main projects :    

Tissellator is a program for creating tessellations. It helps you making classic tessellations in the style of M.C. Escher (35 configurations), and it also allows you to create spiral tessellations (6 configurations). Tissellator runs on Windows, Linux, and Macintosh computers. Just try the program for free, and create your first tessellation in 5 minutes.
BrightenMe brightens the screen to 100% (or lower if desired). This is very handy if the screen has a low brightness, and you are in a sunny outside place. The executed app can be hidden automatically after a delay of a configurable number of seconds. Preferrably, assign the Bixby button of a Galaxy smartphone to this app. You can download it from Google's Play Store.
Harry Wizards Friendcodes is very helpful for Harry Potter Wizards Unite players. It allows players to exchange friend codes and to inform each other about combats at fortresses. You can download it from Google's Play Store.
Refer to http://www.tistis.nl/harrywiz/hw_index.html .
TheseBoots combines the benefits of tracking your own locations as well as the locations of others. TheseBoots helps to set your mind at ease viewing that your children are at school, your spouse is in their office, or your parents are at home or on their way home. You can download it from Google's Play Store.
Refer to http://www.theseboots.nl .
Bridge Probabilities allows you to design a configuration of bridge cards and then to compute the probability of that configuration. You can download it from Google's Play Store.
PokePeek is very helpful for Pokémon GO players. It allows players to inform each other about present and future PokéStop or Gym actions. You can download it from Google's Play Store.
Refer to http://www.pokepeek.nl .
MijnReferendum presenteert een platform van officieuze referenda aan de bevolking van Nederland. Deze Nederlandstalige app is te download van Google's Play Store.
Meer informatie is te vinden op http://www.mijnreferendum.nl .
Blue Date allows a user to contact peers and chat with them. The communication is based on Bluetooth Low Energy (BLE). Removed from Google's Play Store.
Blue Monitor shows services and characteristics for Bluetooth Low Energy (BLE) and classic Bluetooth. You can download it from Google's Play Store.
Rana Easy is an innovative and entertaining Android game for smart people with many challenging levels. Google forced me to integrate it in RanaCidu.
Rana Alpha is an innovative and entertaining Android game for smarter people with many challenging levels. Google forced me to integrate it in RanaCidu.
Ranacidu is an innovative and entertaining Android game for the smartest people with many challenging levels. You can download it from Google's Play Store.
Refer to http://www.ranacidu.com .
TismTool generates source code from a UML model with the emphasis on verification and simulation of Finite State Machines.
Refer to http://www.tismtool.com .
PBN (Portable Bridge Notation) is a world-wide standard for bridge games, that I designed together with Kaj G. Backas.
Refer to http://www.tistis.nl/pbn .
BbnOrganiser is a program for processing bridge bidding systems.
Refer to http://www.tistis.nl/bbn .
Tralihs is a challenging boardgame with trading cards.
Refer to http://www.tistis.nl/tralihs .
I discovered a new class of geometric (fractal) figures and named them H6X9H. The theory and software can be found at:
http://www.tistis.nl/H6X9H .