How do I download Bigtime on my phone?

I'm curious to know, how exactly do I download the Bigtime app on my mobile device? Is it available for both iOS and Android users? If so, can you provide step-by-step instructions on how to get it installed? I've heard about the app's unique features and I'm eager to try it out for myself. Additionally, is there a way to verify the authenticity of the download LINK or the app itself to ensure that I'm not downloading any malware or fake versions? Thanks in advance for your help!