Since the online gambling sector has been growing steadily and between them, online casinos and online betting, now make up just. Currently, Onsidebetting offers a dedicated application only to its Android users, and its apk file can be downloaded directly from the website. Gambling. . Since the online gambling sector has been growing steadily and between them, online casinos and online betting, now make up just. Gambling. Currently, Onsidebetting offers a dedicated application only to its Android users, and its apk file can be downloaded directly from the website.