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