Am I allowed to use YoWhatsApp and WhatsApp at the same time?

Yes, you can use both YoWhatsApp and WhatsApp simultaneously on the same device without any restriction. However, we will recommend you use different phone numbers for each app. So use this version without uninstalling the original one.

Is YoWhatsApp better than official WhatsApp?

It is not easy to determine whether YoWhatsApp is better than the original WhatsApp. While YoWhatsApp does offer additional features such as the ability to customize the appearance and more privacy options, the original WhatsApp has a larger user base and is generally considered more stable and reliable. So, if you are fond of new features and good graphics, then this modified version is best for you but if you prefer 100% security, then the official version is best.