What is the difference between Revv Purple and Red pedal?

Excuse me, could you please clarify the distinction between the Revv Purple and Red pedals? I'm interested in understanding the unique features and potential applications of each one, particularly in the realm of guitar effects and tone shaping. Could you elaborate on their respective strengths, how they differ in terms of sound quality and versatility, and any specific scenarios where one might be more suitable than the other? I'm an avid guitarist and always looking to expand my knowledge of gear and techniques.