BetPlay

BetPlay is an all-in-one utility app with a number base converter that shows all four number systems on one screen simultaneously, so you never have to run two separate conversions to get the representation you need. Type any value into any of the four fields, binary (base 2), octal (base 8), decimal (base 10), or hexadecimal (base 16), and all three remaining fields update instantly, giving you the complete picture with a single entry. This is particularly useful for programming, computer science study, and digital electronics work: seeing that decimal 255 equals hex FF, octal 377, and binary 11111111 all at once reinforces the relationships between number systems in a way that sequential conversions don't. The scientific calculator complements the base converter for computation: log, sqrt, powers, and trigonometry functions alongside standard arithmetic, with a history of the last 10 expressions and a one-tap copy button. BetPlay is fully offline and requires no account, the number base converter and all nine other tools are available immediately after install.