@Iamck9
PC client is vastly superior, just make sure you're using the "IMVU Classic" client,
not the Beta.
Better graphics, vastly better interface, more features that mobile doesn't have and a whole host of things that will appear 'different'; some products aren't compatible with mobile and look weird or just different on there - messed up scalers, tops appearing nude that aren't supposed to be, particle FX, etc.
I just find it to be a more enjoyable experience all the way around, but I am biased due to joining in 2010. The mobile app just ..isn't good in my eyes, it's a chore to navigate and seems to absolutely cook phones; not well optimized at all. Any modern laptop or PC should be able to run VU Classic without a hitch. It should run IMVU Lite even better since it lacks the spyware bloat of the official client. Hope this helps!