Is a stop in Wroclaw worth one less day in Prague?

I’ll be in Prague for 4 days, then Krakow for 3. I have limited time and I’m not sure whether to sacrifice one of my Prague days to add a night in Wroclaw on my way from Krakow to Berlin. I’ve never been in this part of the world so I’d appreciate the insights of people more knowledgeable than me. Is Wroclaw worth the detour, or is it better to spend more time in Prague? I’m in my 20s and appreciate a good social scene but my priority is exploring cities and sightseeing. Thank you!