勝ち勝ち君 - 子役カウンター is a mobile application developed by Channel9System for Android devices. This free app allows users to determine the settings of slot machines based on the probability of each small role. It faithfully replicates all the features of the original version, including the analog-like user interface.

The app offers the following features:

• Ability to save data for up to three different slot machines.
• Simple design that minimizes battery consumption.
• Easy calculation of each small role while keeping track of the total number of games played.
• Red flashing circle when tapping the buttons to prevent counting errors.
• Option to decrease the count in case of an incorrect count.
• Ability to input the starting number of games and calculate the probability based on the number of games played.

With its accurate replication of the original functions and user-friendly design,勝ち勝ち君 - 子役カウンター is a useful tool for those interested in determining slot machine settings based on small role probabilities.