I started learning Android programming in 2017, just because it was fun.
Most of my projects are free, open source, and all of them are without ads. I hate ads.
If you like what I am doing, and want to support my studies, please buy WSTAR at Google Play store.
Buy it from Google Play Store, and support my studies.
Download it from here, for free.
It may not be the latest version, and it will not automatically update itself from Google Play Store.
The application is ad free and open-source. Licensed under GNU GPL V2.0.
Ordinary people keep cats, dogs, fish or dwarf hamsters as pets. Programmers keep pet applications. Pet applications may be useless to others; we write them just for the pleasure of creation. If we have to learn a new programming language, we often rewrite one of our pet applications first. Just as ordinary people keep different kinds of pets, programmers have different kinds of pet applications, often more than one at any time.
This is my favorite pet application.
I wrote the earliest version in Basic, while I was in high school. Then I adapted it to almost all computers I encountered and rewrote it in all the programming languages I learned. I wrote it in Basic, Pascal, C, PL1, Algol, Fortran, assembler, and several scripting languages. It worked on ZX Spectrum, Commodore 64, some ancient Atari computer whose name I do not remember, and of course on PCs, and now on Android.
See also the JavaScript version.
For those, who cannot afford to pay for the full app, I made the following free variants available on Google Play Store:
WSTAR, Pascal curve and Nephroid
They can be also be downloaded from here:
WSTAR, Pascal curve and Nephroid
And the source code is the same as the source code of the full version.
Balls, just balls. Lots of them. To play with.
Download from Google Play Store or from here.
The app is ad free and open-source. Licensed under GNU GPL V2.0.
Random lines and other random drawings.
For the casual user: to show off how fast your phone or tablet can be, if it is really pushed to its limits. Do not forget to uninstall it after five minutes. It uses up 0.02% of memory of your phone, and it is unlikely that you will need it again. And if you do, you can always download it from the store in minutes.
For programmers: It is good template for creating more serious programs, where one thread calculates complex images and another thread displays them.
Download from Google Play Store or from here.
The app is ad free and open-source. Licensed under GNU GPL V2.0.