Strak Combina is a free Android application developed by Strak that generates combinations for various lottery games such as Lotofácil, Mega Sena, Dupla Sena, and Quina. The app guarantees a 100% prize, and it is compatible with Android 9.0. Strak Combina offers two mechanisms for closing games. The first method is faster and requires more game tickets to be played, while the second method is slower and requires fewer game tickets to be played. The second method is only available in the paid version of the app. The app also allows users to save their generated games on the SD card. However, Strak Combina contains advertisements.